The EAGE Interactive Online Short Courses bring carefully selected courses from our catalogue online to give participants the possibility to follow the latest education in geoscience and engineering remotely. The courses include some of the most popular EAGE Education Tours (EET) and are designed to be easily digested over the course of two or three days.
Participants will have the possibility to interact live with the instructor and ask questions.
Education packages
To help you save on registration fees and better organize your learning path, we are offering Education Packages for all EAGE online courses. The packages are valid for a period of 12 months and give you credits (3, 5 or 10) to spend on courses of your choice.
>> Learn more about Education Packages
Already have a package code? Click here to select courses for your package.
Courses open for registration
| Dates | Course Title | Instructor | Category | Subcategory | Registration | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 27 Jun — 27 Jul 2022 | Introduction to Machine Learning for Geophysical Applications An EAGE Extensive Online Course | Jaap Mondt | Data Science | Machine Learning | Extensive Online Course | 2022 | June | EAGE | ||
| 5–6 Jul 2022 | Machine Learning in Geosciences Interactive Online Short Course | Gerard Schuster | Data Science | Machine Learning | Interactive Online Short Course | 2022 | July | EAGE | Participants will learn the high-level principles of several importanttopics in machine learning: neural networks, convolutional neuralnetworks, and support vector machine. They will practice the executionof these methods on MATLAB codes (free for 30 days afterdownloading it from the MATLAB site) and Python-related codes(can be uploaded during the course). Applications include fracturedetection in photos, fault delineation in seismic images and pickingNMO velocities in semblance gathers. About 66% of the time will be for 50-minute lectures and the remainingtime will be devoted to lab exercises. The course is designed for geoscientists who have heard aboutMachine Learning and might know some details, but lack enoughknowledge to test ideas or make the next step in understanding. Thislimitation will be mitigated after a day of diligent attendance andeffort. A selective overview of important ML topics is provided andtheir practical understanding comes from MATLAB and Python-relatedexercises applied to geoscience problems. Participants should have casual familiarity with linear algebra andcalculus. convolutional neural networks machine learning neural networks oil and gas semblance gathers support vector machine | |
| 7–8 Jul 2022 | Geology and Engineering of Carbon Capture and Storage Interactive Online Short Course | Grant Wach and Maurice Dusseault | Energy Transition | Energy Transition | Interactive Online Short Course | 2022 | July | EAGE | Global leaders and decision-makers are well aware of the climatecrisis and many are taking action to mitigate the effects of climatechange by reducing CO2 emissions. However, the demand for energyremains high, especially in areas that require heating and cooling,and currently much of the world’ energy is derived from hydrocarbons.Discussion of the ‘nergy Transition’ which is the shift fromfossil-fuel based energy to renewable sources, seems ubiquitous inrecent years, the transition is not as simple as that. Ensuring reliableaccess to energy in all jurisdictions is crucial, as are economic considerations.Combining a switch to renewables with anemission-reduction measures such as Carbon Capture and Storage isnecessary in the path to carbon neutrality.Carbon Capture and Storage (CCS) refers to the capture of emittedCO2 from the atmosphere, transport, and eventual storage in geologicalstructures. The basic concept is simple, but the execution iscomplex; it requires the identification of high-emission sites, detailedbasin analysis to determine suitability and safety for carbon storage,engineering, economic analysis, and risk analysis before an informeddecision to develop a CCS site can be made. This course will overviewcurrent energy challenges (the WHY), and geological and engineeringbasics of CCS (the HOW). Students will leave with a betterunderstanding of this mitigation opportunity and how decisions canbe made to pursue CCS in a given area. Upon completion of this course, participants will be able to:1) Understand the need to reduce atmospheric CO2 and the effectsof climate change to the global climate system2) Understand the basic concepts involved in reservoir characterization3) Discuss suitability of developing CCS sites, considering proximityto emission source, geology and engineering4) Discuss social and economic considerations of CCS5) Discuss case studies of existing CCS operations PART 1: Geoscience1. Introduction: Anthropogenic Atmospheric CO2 and the Need toReduce Emissionsa. Radiative Forcing of CO2 & Climate Changeb. Energy Challenges and the Energy Transitionc. Carbon Capture and Storage (CCS): Concept Introd. The role of CCS in the path to Carbon Neutrality2. Geological Considerations: Basin Suitabilitya. Seismicityb. Depthc. Fault intensityd. Geothermal regimese. On vs. Offshore Basinsf. Accessibilityg. Existing Petroleum/ Coal Resourcesh. Industry Maturity3. Identifying a Prospective Sitea. Reservoir/Seal Criteria4. Detailed Site Characterizationa. Structural and Stratigraphic Modelsb. Injectivityc. Containmentd. Capacity5. Economic Evaluations6. Risk7. Monitoring8. Decision to Develop9. Types of CCS Facilitiesa. Case Study of operational CCS sites10. Wrap-Up and ExercisesPART 2: Engineering1. Introduction: The Engineering Context for CCSa. Sequestration Options: Carbon or CO2?b. The Behavior of CO2c. Capacity Estimationd. Injection Strategiese. Reservoir integrity Issuesf. Monitoring and Optimization2. Sequestration Optionsa. The Various Storage and Sequestration Mechanismsb. The Need for Interim Storage –alt Caverns, other…. CO2 as a Sequestration Mediumd. Direct Injection of Carbon-rich Solids –H4 Harvesting3. The Behavior of CO2a. The Various Phases of CO2 with Pressure and Temperatureb. Properties of CO2: Density, Viscosity, Solubility in H2Oc. Impure CO2 impacts4. Capacity Estimatesa. Pore Volume Access Conceptsb. Porous Media Flow InstabilitiesGravity instability, Capillary instability, Viscous fingering, Channelling5. Injection Strategies –ater-saturated Assumptionsa. Vertical Well and Horizontal Well Optionsb. Down dip or Up-dip injection? Gravity Effectsc. Pure? Pre-Mixed? Cyclic Water/CO2 Injection?6. Reservoir Integrity –ellbores, Abandoned Wellsa. Leakage Mechanisms, Corrosion…. Monitoring and Optimizationa. PVT & Q monitoringb. Deformation Monitoring –nSAR, Tilt, Othersc. Microseismic Monitoring This course is designed for students and professionals in the geologicaland engineering fields who are interested in learning about thefundamentals of carbon capture and storage and modern energychallenges. Participants should have prior knowledge of basic principles of geologyand/or engineering. ccs carbon reservoir storage co2 energy climate change carbon neutrality energy transition basin analysis climate environmental geomechanics engineering | |
| 14 Jul 2022 | DLP Webinar on Distribution of Faulted Mesozoic and Tertiary Seals for CO2 Storage in the Northern Horda Platform, Norwegian North Sea Distinguished Lecturer Webinar | Johnathon Osmond | Distinguished Lecturer Webinar | 2022 | July | EAGE | ||||
| 19–20 Jul 2022 | Seismic Reservoir Characterization: An Earth Modeling Perspective Interactive Online Short Course | Dr Philippe Doyen | Reservoir Characterization | Reservoir Characterization | Interactive Online Short Course | 2022 | July | EAGE | Three-dimensional numerical earth models play an increasinglyimportant role in the petroleum industry to improve reservoir managementand optimize hydrocarbon recovery. A key challenge forreservoir geoscientists is the quantitative integration of 3D and 4Dseismic data into static and dynamic earth modeling workflows.Using a combination of theory and illustrations from real field studies,this two-day course reviews best practices and challenges forconstraining earth models with seismic information and quantifyingsubsurface uncertainty. The course objectives of the course are to:•rovide a practical introduction to techniques and workflowscombining geostatistics and rock physics for the construction ofseismic-constrained earth models;•xplain how to integrate quantitatively seismic and well data inearth modelling workflows and evaluate the associated geo-modeluncertainty;•escribe the assumptions and technical limitations of currentseismic-based geo-modeling techniques, thus helping reduce theblack-box application of software tools;•ighlight the technical challenges and the road ahead for quantitativeseismic interpretation. The two-days course is divided into 7 modules, which provide anoverview of basic concepts and their application to a number of casestudy examples involving both clastic, carbonate and unconventionalreservoirs.•odule 1 —ntroduction to geostatistics and earth modellingfrom seismic data.•odule 2 —eostatistical interpolation techniques for seismic-guided 3-D earth models.•odule 3 —tochastic simulation with seismic constraints.•odule 4 —eismic lithology and fluid prediction using statisticaltechniques.•odule 5 —tochastic inversion.•odule 6 —tatistical rock physics.•odule 7 —imulator-to-Seismic workflow using 4-D earth models. The course is aimed at geoscientists and engineers who are involvedin the construction of earth models and who wish to learn aboutpractical techniques for seismic data integration, combined use ofseismic rock physics and geostatistics, uncertainty modeling andquantitative 4D interpretation. The course comes at a time whenseismic-based earth modeling has become a key activity for integratedasset teams in the E&P industry. It should therefore be of interestto a broad audience, including technical specialists and managers,who are actively involved or supervise seismic-to-simulator activities.Basic knowledge of seismic inversion techniques and geostatistics isdesirable. Basic knowledge of seismic inversion techniques ad geostatistics isdesirable carbonates geostatistics integration interpolation interpretation inversion lithology rock physics sediment | |
| 26 Jul 2022 | E-Lecture Webinar on Comparing predicted and actual reservoir properties and performance of geothermal projects E-Lecture Webinar | Lara Borst | E-Lecture Webinar | 2022 | July | EAGE | ||||
| 27 Jul 2022 | DLP Webinar on The contribution of NSG to measure soil related terroir factors in viticulture Distinguished Lecturer Webinar | Kees van Leeuwen | Distinguished Lecturer Webinar | 2022 | July | EAGE | ||||
| 27–28 Jul 2022 | An Introduction to Offshore Wind Interactive Online Short Course | Jeroen Godtschalk | Energy Transition | Energy Transition | Interactive Online Short Course | 2022 | July | EAGE | The purpose of this course, is to provide the participants with a comprehensiveintroduction into offshore wind, it’ development and therole of the geoscientist in this process.During the course, the participants are taken through all the basicbuilding blocks of the offshore wind development. We start thecourse with an introduction into the various options for renewableenergy and why offshore wind is often the preferred option. Weconclude this course by discussing the installation issues for offshorewind farms, but also touch upon maintenance issues. In between wecover all the basic steps of development, with a slight focus on themore geoscience related work such as site investigation work, settingthe correct parameters for the offshore campaign and foundationselection.After having completed the course, the participants should have abetter understanding of how offshore wind farms are being developedand what factors are influencing the design and the businesscase of such farms. The participant should than also have a clear ideaon what the role of the geoscientist in this process is. This should givehim/her also some possible guidance on the career opportunities inthis field, should he/she decided to move away from oil & gas andpursue a career in offshore wind.In order to participate in this course, no real knowledge of offshorewind is mandatory. A basic understanding of geophysical andgeotechnical methods will help, but the course can also easily befollowed with limited knowledge of these subjects.If required the course can be tailored to suit the needs of the group,with either more or less detailed presentations. We are happy todiscuss any preferences upfront. Upon completion of the course, the participants will be able to:1. Better understand the process and the steps of an offshore windfarm development.2. Have a clear understanding of the role of the geoscientist in thisproces.3. Understand what factors are determining the final design andlayout of an offshore wind farm.4. Have a good overall idea of offshore wind 1. Offshore wind basics•verview of renewable energies•hy offshore wind•he physics behind offshore wind•hat is needed for an offshore wind farm (how to decide on asuitable site)•equired permits2. Site selection•hat stakeholders do we have before site selection•eabed occupation/UXO•rid connection to shore•orts/logistics hub•eospatial issues•esktop studies on geology, archaeology, morphodynamics3. Data collection•etOcean Data –ind, waves and currento Methodologyo Why needed and how is it used•eophysical data –eabed and below seabaedo Methodologyo Why needed and how is it used•eotechnical data –eabed and below seabedo Methodologyo Why needed and how is it used•orphodynamics•ntegration into a ground model4. Foundation types•ifferent types of foundation•hich foundation suits which project and why•ro’ and Con’ for each foundation5. Transport & Installation•nstallation of different foundations•able installation•ypical issues for installation•aintenance The course is designed for anybody who wants to learn more aboutoffshore wind development and who is keen to learn to understandthe basic building blocks of offshore wind. A basic understanding of geophysical and geotechnical methodswill help, but the course can also easily be followed with limitedknowledge of these subjects. In addition, basic understanding ofphysics will help to understand the overall idea of wind energy andits associated issues. offshore wind energy transition geoscience renewables offshore | |
| 28 Jul 2022 | DLP Webinar on GeoChron-Based Restoration Workflow Applied to Clyde Seismic Dataset Distinguished Lecturer Webinar | Dr. Anne-Laure Tertois | Distinguished Lecturer Webinar | 2022 | July | EAGE | ||||
| 2–5 Aug 2022 | Introduction to Data Analysis: Concepts and Examples Interactive Online Short Course | Dr Robert Godfrey | Geophysics | Seismic Processing | Interactive Online Short Course | 2022 | August | EAGE | The course covers a range of advanced data analysis topics includingnovel signal processing techniques, pre-stack depth migration, reservoircharacterization, time lapse analysis and the road ahead.The free on-line books by Jon F. Claerbout, material from SEG Wikiand papers published in Geophysics, The Leading Edge and SEGExpanded Abstracts are used to provide technical background forthe course topics. 1. Suggest acquisition strategies toa. broaden spectrum (both low and high)b. reduce acquisition cost where appropriatec. provide superior illumination andd. improve conventional wave imaging using shear waves tohighlight faults/fractures, low compressional wave impedancecontrasts and gas-effected areas.2. Advise and recommend key steps in data processing workflows.3. Choose appropriate pre-stack depth migration algorithms to imageexpected dip range (e.g. Kirchhoff, Beam, RTM).4. Advise on velocity-depth model building workflows (e.g. GridTomography or FWI).5. Decide on the applicability of applying AVO and what elasticattributes to estimate.6. Define optimal petrophysical parameters to be estimated usingelastic attributes and an associated workflow including probabilityanalysis if appropriate. 1. Signal Processing2. Novel Seismic Acquisition3. Multiple Attenuation4. Pre-Stack Depth Migration5. AVO & Rock Physics6. Quantitative Interpretation7. Time-Lapse Seismic8. The Road Ahead The intended audiences for this course are geoscientists-in-training,seismic data processors, petroleum geologists, seismic interpretersand operational geophysicists who are seeking to expand theirknowledge base on modern concepts in geophysical data analysis. Participants are expected to have a basic knowledge of the fundamentalsof data processing and some experience in interpretation. 4d avo depth migration fractures imaging impedance reflection reservoir characterization rock physics signal processing time lapse tomography | |
| 3 Aug 2022 | E-Lecture Webinar on Active and passive 3D seismic survey around the Scrovegni Chapel using autonomous nodes E-Lecture Webinar | Ilaria Barone | E-Lecture Webinar | 2022 | August | EAGE | ||||
| 9–12 Aug 2022 | Borehole Seismic Fundamentals and Introduction to Advanced Techniques Interactive Online Short Course | Mr Allan Campbell | Geophysics | Seismic Processing | Interactive Online Short Course | 2022 | August | EAGE | This course has 6 sections. The course moves from giving a basicunderstanding of the most common surveys towards the newesttechniques being developed to solve modern problems.1. Introduction to Vertical Seismic ProfilingThe VSP techniques used in industry are introduced. Basics ofwireline acquisition, and an introduction to fiber based acquisitionare covered. This section gives a brief overview of the value of allthe commonly used borehole seismic techniques, from checkshotthrough to 3D VSP.2. The BasicsCheckshot (velocity survey) and zero-offset VSPs are widely used, aresimple to acquire and process, and have huge value. This section willdescribe acquisition, processing and interpretation of these basic, butpossibly the most important, surveys.3. 2D and 3D ImagingThis section will focus on designing and interpreting walkaway VSPand 3D VSP surveys. Down-hole receivers create the opportunity forhigher resolution images than surface seismic can provide, and canprovide images in poor seismic imaging areas, or images where surfaceaccess is difficult. Advanced processing techniques will be discussed.Specifics of survey planning and acquisition will be covered.4. Anisotropy and MoreThe anisotropy module will focus on extracting VTI and HTI anisotropyparameters from walkaway VSP and 3D VSP surveys. Seismic maybe improperly imaged due to poor anisotropy assumptions. Stressand fracturing information may be deduced from seismic and validatedwith VSP. Having receivers down-hole and sources at the surfacecreates an ideal opportunity to measure anisotropy in-situ. Groundtruth measurement of AVO can be made with receivers downhole,this section describes the various VSP AVO techniques in commonuse. Downhole arrays are also ideal for locating multiple generatorsand measuring Q which we cover in this section.5. Reservoir Monitoring and Reservoir PropertiesThis section focuses on time-lapse 3D VSP, which can observe reservoirchanges with a greater precision than is possible with surfaceseismic. There is an overview of fracture detection and orientationwith VSPs. Elastic FWI is being developed to measure the reservoir’elastic properties, and will be briefly covered. A discussion on veryhigh resolution imaging and tomography with Crosswell seismicfinishes the module.6. Advanced AcquisitionTechnology marches forward as limitations are reached in wireline acquisition.Putting the receivers in the drill string to get real-time VSPs(while drilling) is becoming routine. Optical fiber (DAS) recording isan emerging technology which enables efficient, fit-for-purpose VSPsurveys with cost benefits over traditional wireline technology. Upon completion of the course, participants will know the basics ofacquiring and processing borehole seismic data. They will also befamiliar with the latest borehole seismic techniques in:•igh resolution imaging using 2D and 3D VSP surveys;•nisotropy determination and fracture analysis;•eservoir monitoring using time lapse VSP and crosswell seismic;•lternative acquisition schemes such as SWD and DAS.Participants will have a better understanding of the role of boreholeseismic techniques in hydrocarbon exploration and production. Theywill be able to more knowledgeably participate in the design, planningand execution of advanced surveys and be comfortable with theinterpretation of these surveys. The course will contain the following modules:1. Introduction to Vertical Seismic Profiling (1.5hrs)2. The Basics (2 hrs)a. Checkshot VSPb. Zero Offset VSP3. VSP Imaging: 2D and 3D Techniques (2 hrs)a. Survey design and modelingb. Processing- model building, tomography, imaging techniques (Kirchhoff,RTM)c. 2D imaging- Offset VSP, Walkaway VSPd. 3D imaging4. Anisotropy and More (3 hrs)a. Measuring anisotropy with walkaway and 3D VSPs-VTI and HTI, fracturesb. AVO Analysisc. Techniques to locate multiple generators with VSP datad. Q estimation and Q compensation with VSP data5. Reservoir Monitoring and Reservoir Properties (1.5 hrs)a. Time Lapse 3D VSP for reservoir monitoringb. Elastic FWI (VSP Inversion)6. Advanced Acquisition (1.5hrs)a. Seismic while drillingb. Distributed Acoustic SensingTiming of sections may change. The course is targeted toward those who have a basic understandingof surface seismic acquisition and processing, but only limited knowledgeof borehole seismic. The course is designed to help participantsidentify borehole seismic solutions to common seismic interpretationproblems. It is also be useful for those geophysicists needing higherresolution images than surface seismic can provide, and those geophysicistswho need to validate seismic processing parameters andimaging models using borehole seismic. Lastly, the course is relevantfor geophysicists wanting to learn how to use borehole seismic as acost-effective reservoir monitoring tool. Participants are assumed to have knowledge of seismic responseto earth reflectivity. Participants should be aware of common welllogging services. 2d 3d 4d anisotropy attenuation avo borehole geophysics case study fractures full wavefield imaging kirchhoff land seismic marine seismic offshore oil and gas rtm time-lapse tomography traveltime velocities vsp vti | |
| 11 Aug 2022 | DLP Webinar on Elastic full waveform inversion of DAS data: Theoretical developments and application to a VSP from a field site in Newell County, Alberta Distinguished Lecturer Webinar | Matthew Eaid | Distinguished Lecturer Webinar | 2022 | August | EAGE | ||||
| 16 Aug 2022 | DLP Webinar on Low Frequency Seismic Acquisition on Land Distinguished Lecturer Webinar | Bart Duijndam | Distinguished Lecturer Webinar | 2022 | August | EAGE | ||||
| 23–26 Aug 2022 | Construction of Fractured Reservoir Models for Flow Simulation Incorporating Geology, Geophysics and Geomechanics Interactive Online Short Course | Reinaldo Michelena, Chris Zahm & James Gilman | Geology | Geological Modeling | Interactive Online Short Course | 2022 | August | EAGE | ||
| 24 Aug 2022 | E-Lecture on Automated Top and Base Salt Interpretation Using Machine Learning E-Lecture Webinar | Oddgeir Gramstad | E-Lecture Webinar | 2022 | August | EAGE | ||||
| 24–26 Aug 2022 | Sub-Surface Uncertainty Evaluation (SUE) Interactive Online Short Course | Manish Agarwal | Geophysics | Integrated Geophysics | Interactive Online Short Course | 2022 | August | EAGE | INTRODUCTION TO SEISMIC UNCERTAINTY EVALUATION1. Sources of Uncertainties (Data Acquisition, processing & Interpretation).2. Validation with data examples on assessment/quantification &qualifications following standard industry practices. Introductionto new learning techniques/technology.3. Value addition on how the course will benefit an interpreter, geologist,and a Reservoir Engineer.SEISMIC UNCERTAINTY ASSESSMENT1. Geological factors influence on Velocities2. Review and evaluate various types of velocity (Average, RMS,Stacking, Migration, Pseudo, P&S).SEISMIC UNCERTAINTY QUANTIFICATIONS1. Construct geologically reasonable velocity models from the data(include synthetic seismograph creations and concept of geological/geophysical well markers).Hard and soft approaches.2. Map migration, structural modelling & stochastic depth conversion.3. Advance WCT(Well Constrained Tomography) workflows to constructgeologically plausible models.SEISMIC UNCERTAINTY QUALIFICATIONS1. Quantifications to qualification stage: Blind well analysis,equiprobable model, multiple regression models..2. Update depth conversion models adaptable to local geology andtest them through amplitude shut-offs and closure maps3. Evaluate structural uncertainties by performing Monte Carlo simulationon best reference depth maps4. Evaluate the products from the multiple realizations: Probabilitydistribution maps, multi-seed structures, amplitude conformance Seismic Uncertainty Analysis is a three fold approach to support wellplanning:•ssessment, Quantification & Qualification•ata Analytics is a must to understand data leading to decision(Data2Decision)•earn to qualify and quantify your seismic uncertainties: Determinsiticand Stochastic•eploy Equiprobable models for Uncertainty assessments andqualifications•onte Carlo regression engine provides a relatively optimum P10/P50/P90 Volumetric ranges•ncertainty reporting and well planning Day 1 -4HRSSEISMIC UNCERTAINTIES ASSESSMENT•tandard practices to evaluate and estimate the Seismic DepthUncertainties•isk and Myths•hy Quantification & Qualification of seismic depth uncertaintiesis important in E&P?QUANTIFICATION OF UNCERTAINTIES (SEIS2WELLS)•eterministic Depth Conversion–ard And Soft Approaches•robabilistic Depth Conversion –ariogram & uncertainty modelling•dditional Techniques : Map Migration, Equiprobable modelsADVANCED RAY BASED DEPTH CALIBRATION (WELL TOMO)•omography Approach For Geological Plausible Velocity Models :Vertical Ray Tomography•hy it is better de-risking model? Predictions away from the harddataQUANTIFICATION TO QUALIFICATION•lind Well Analysis to test the best technical cases•ultiple regression models•quiprobable modellingDay 2 -4HRSQUALIFICATION OF UNCERTAINTIES: DRILL READY SEISMIC (DRS)•tructural Flexing To Compute Probabilistic Volumetrics•pill Point Control And Amplitude Conformance Volumetrics•ingle And Multi-Seed Closures•robability And Iso-Probability Closure Maps•tacked Reservoir VolumetricsDEPTH RISKING SCORECARD•ncertainty Risking Scorecard•epth Uncertainty Communication•ell Planning and Decision Making from the Uncertainty Cube•ITFALLS & GENERAL DISCUSSIONS•ase Studies•&A The course is designed for Geologist, Geophysicist, drilling Engineersand Reservoir Engineers. Participants require a working knowledge on basic exploration cycle.Recommended reading•ntegration of geology with depth conversion using Well-ConstrainedTomography, EAGE April 2016•anaging uncertainty to deliver complex development wells,AEGC September 2019•epth conversion and seismic inversion of the Scarborough gasfield, ASEG December 2019 anisotropy interpretation reservoir modeling tomography uncertainty wells workflows | |
| 25 Aug 2022 | DLP Webinar on AI Seismic Interpretation of vintage seismic data with implications for CCS site characterisation Distinguished Lecturer Webinar | Dr Ryan Williams | Distinguished Lecturer Webinar | 2022 | August | EAGE | ||||
| 30 Aug — 2 Sep 2022 | Upscaling and artificial intelligence based proxies for uncertainty assessment of reservoir production Interactive Online Short Course | Dr Dominique Guerillot | Engineering | Reservoir Management | Interactive Online Short Course | 2022 | August | EAGE | The aim of the course is to recap main techniques required to buildan integrated reservoir model and to explain different potentialworkflows for field development and/or history matching processes.This course will include explanations of upscaling techniques and theuse of proxies for uncertainty assessment of production forecasts.All these methods will be illustrated and applied to the Brugge case. Upon completion of the course, participants will be able to:•nderstand the fundamentals of Geostatistics and Spatial Modeling•alculate a variogram•now what are the principal of Kriging•now the main methods of Geostatistical Simulations for modelingheterogenous and fractured reservoirs•e familiar with the main Upscaling technics used in reservoirsimulators•now how to use proxy models for assessing Uncertainty in ProductionForecasts•pplication to the Brugge field will be given to illustrate the methodology. Integrated Geological Modeling and Reservoir SimulationGeostatistics and Spatial ModelingVariogramKrigingHistory Matching PrinciplesGeostatistical SimulationsLimitations of KrigingGeostatistical SimulationWhat do we want from a simulation?Principles of stochastic modelingPixel based modelObject based modelSequential Gaussian Simulation (SGS)Random CharacterProperties of SGSScaleCell Sizes & RangesIndicator FormalismSequential Indicator SimulationUpscalingWhy Upscaling is Needed?Orders of magnitudes for the Geological Model and the ReservoirSimulatorsIs it necessary to take into account all heterogeneities ?Impact on CPU costCan we replace heterogeneities by homogeneity?Is it right to call “quivalent”he upscaled permeabilities?The upscaling problems considered hereUpscaled Values Depends on FlowUpscaling of Geo-cellular ModelsUpscaling in Integrated StudiesUpscaling of porosityUpscaling of absolute permeabilityDifferences between additive and non additive variablesSingle phaseDarcy’ lawSingle Phase Flow around WellsWhat happenS in 1 D?Arithmetic AverageHarmonic AverageGeometric AverageWeighted Arithmetic AverageWeighted Harmonic AverageWhat happens for a layer cake model?Upscaling generates anisotropyHow to handle barriers & faults?How to handle fractures?Uncertainty Assessment in Production ForecastIntuitive WorkflowRecommended WorkflowArtificial Neural Network as ProxyApplications on case studiesApplication to Brugge field The course is primarily addressed to reservoir geologists and reservoirengineers involved in building reservoir models but could also be ofinterest to production engineers who have to deal with the consequencesof uncertainty in reservoir performance. Darcy’ law, basic probability and statistics. 3d anisotropy capillary pressure carbonates case study facies flooding fluid fractures geocellular geostatistics groundwater history-matching oil and gas permeability reservoir characterization reservoir engineering reservoir modeling uncertainty workflows | |
| 6–9 Sep 2022 | Seismic Interpretation: Fundamental for Prospect Generation Interactive Online Short Course | Mr Dean Powell | Geophysics | Integrated Geophysics | Interactive Online Short Course | 2022 | September | EAGE | Seismic data provide us with a response from the subsurface, ratherthan a model of the subsurface. The challenge for the seismic interpreteris to understand this response, manipulate it in accurate andcreative ways in order to model the geology that gave rise to it, andin the process identify drilling targets.This course is designed to help geoscientists meet that challenge byassisting them to:•nderstand the basics of seismic acquisition and processing,•ain familiarity with qualitative and quantitative aspects of theseismic interpretation process,•tilize various interpretation techniques and tools,•dentify and avoid obstacles that limit the reliability of an interpretation,•pproach interpretation problems with creativity and perseverance,•pply sound geological reasoning,•uild an understanding of how the ingredients can be integratedto constitute a reliable interpretation,•valuate the risk of exploration success,•ourney through the interpretation process to the choice of a drillinglocation.The course utilizes a comprehensive 2D interpretation exercise basedon an actual exploration scenario. This exercise is tackled in differentstages throughout the course, helping participants to progressivelyincorporate the many aspects of the interpretation process, from theearly stages of understanding the geological setting and making thestratigraphic correlations, followed by fault interpretation and horizonmapping, through to depth conversion and geological modeling.Additional exercises and case histories complement the classroominstruction, helping participants develop an open and creative mindsetto broader exploration objectives as well as to the detail requiredfor prospect generation. This mindset is one that looks for value incontributions from outside the strictly geophysical arena and alsoincorporates the geological risking process as a means of injectingrigor into the interpretation process.Reinforcing the lessons gained from the major interpretation exercise,the concluding case history provides a further illustration of theintegration of the available geotechnical data to achieve a successfuloutcome. This is not a survey design course. Survey design is discussed but notcovered in detail. After attending this course, the participant will:•ecognize the limitations imposed on a seismic dataset by acquisitionand processing specifications;•dentify key mapping horizons and play types in a seismic dataset;•ranslate the seismic image into a realistic geological model;•enerate credible hydrocarbon prospects. Day 1•he background: Basic geophysics•he preparation: Understanding the geology > Exercise stage 1•he kick-off: Early observations > Exercise stage 2•he map: Structural interpretation > Exercise stage 3Day 2•he model: Seismic stratigraphy•he detail: Quantitative interpretation > Exercise stage 4•he risk: Prospect evaluation > Exercise stage 5•he background: Basic geophysics All those interested in seismic imagery. The acquisition geophysicistmay discover an unfamiliar presentation of familiar concepts. Theprocessing geophysicist may discover the causes of some types ofperturbations in seismic images. Likewise, the interpreter may gainunderstanding of the limitations in seismic images. Those in chargeof financing these images may understand better why they are soexpensive. The course is designed especially for early-career geophysicistsand geologists as well as students in geoscience disciplines. It willalso benefit other professionals involved in oil and gas exploration,particularly engineers and managers who wish to gain a better understandingof the role of seismic data in identifying drilling targetsand to make a more informed assessment of the risk associated thedecision to drill an exploration well. 2d case study depth conversion faults interpretation land seismic mapping oil and gas rock physics seismic attributes seismic stratigraphy | |
| 7–8 Sep 2022 | Integrated Seismic Acquisition and Processing Interactive Online Short Course | Jack Bouska | Geophysics | Seismic Acquisition | Interactive Online Short Course | 2022 | September | EAGE | A significant transformation is sweeping the seismic industry. The maturingof simultaneous source shooting, the introduction of ultra-small-lightweightautonomous recorders, along with the complimentary development of anew generation of highly portable, miniaturized impulsive seismic sources,all represent a true revolution in seismic acquisition technology. These newinventions are not only reducing the cost of conventional seismic, but are enablingultra high-quality 3D’ with mega-dense spatial sampling, in ways thatwere unimaginable only a decade ago. To truly take full advantage of theserecent innovations in source and recording technology requires abandoningsome outdated survey design and data processing practices in favor of moreappropriate methods tailored to modern seismic surveys. This course covers thefull breadth of knowledge and tools required to select and adjust survey designparameters for optimum imaging of the subsurface target, while honoringequipment limits and surface constraints. Students will learn a practical setof survey design techniques, using a combination of both presentations andin-class exercises, which are reinforced using specific examples of cutting-edgeseismic acquisition projects from around the globe. Each participant will gain exposure to the core principals of seismic 3D surveydesign, along with practice in selecting a balanced set of 3D acquisition geometryparameters for both optimum field implementation and competent dataprocessing. Students will also learn how those parameter choices directly affectacquisition operations, data processing and the quality of the final image volume. •oundations of seismic system integration and subsurface mapping;•ethods of acquiring seismic data, to image the subsurface;•ptimum processing of wide azimuth seismic data, to image the subsurface;•ntroduction to the survey design study, a data driven investigation intosurvey objectives, mapping requirements and geographic constraints;•he survey design procedure, techniques for selecting a balanced set of 3Dgeometry parameters;•ffshore Ocean Bottom Seismic 3D survey design, with worked examples;•nshore 3D seismic surveys using explosive sources, with worked examples;•nshore 3D seismic surveys using Vibroseis sources, with SimultaneousSource examples. The course is designed for:1. Seismic acquisition specialists who wish to learn more about designing cost-effectiveacquisition programmes, that are well matched to state-of-the-artprocessing and imaging techniques, along with strategies to exploit the futureof high channel count crews in order to create ultra-high quality images;2. Seismic processing specialists who wish to learn about how acquisitiongeometry parameter choice directly affects the ability to attenuate noise,and image the subsurface, in the context of a modern processing scheme3. Seismic interpreters with a desire to know more about both of the above. Participants are assumed to possess a working knowledge of the reflectionseismic method and its use in exploration and reservoir management. 3d dense surveys dynamite imaging interpretation land seismic mapping migration near surface obc offshore onshore sand sensors sparse data survey design vibroseis wave propagation | |
| 14–15 Sep 2022 | Geophysical Data Analysis in Julia, including Machine Learning Interactive Online Short Course | Dr Rajiv Kumar | Data Science | Machine Learning | Interactive Online Short Course | 2022 | September | EAGE | The main objective of this course is to bridge the gap between R&Eand non-R&E people working in the industry together by providinga learning platform to non-R&E people where they can understandand develop their own research ideas and give them life. Even R&Epeople can learn the power of open source languages such asJULIA in testing and writing small prototypes while utilizing parallelcomputing capabilities. The audience will learn and develop smallresearch prototypes on seismic data processing concepts such asdenoising, interpolation, modelling and inversion. The secondobjective is to demonstrate to the audience that they can furtherexplore the world of machine learning in JULIA while connectingthe conventional and ML techniques to stay up-to-date with theadvancements in the field of signal processing. Upon completion of the course, participants will learn:•ow to build and test small research prototypes in JULIA forday-to-day task•o use and understand signal processing tools available in opensource and how to adapt these tools as per the research requirements•o perform parallel computing in JULIA to scale small researchprototypes to a large-scale problem The course is completely hands-on delivered through various jupyternotebooks with a couple of presentations in between.•ntroduction to JULIA- loading JULIA, IDE and various other environments- introduction to variables, types, functions, data structure,control flow- introduction to parallel computing in JULIA•arious data preprocessing tasks such as- loading LAS, Excel, text, SEGY format in JULIA,- organizing the data- cleaning and visualization•utorial on designing different seismic preprocessing tools such as- denoising- interpolation- deconvolution•sing Synthetic VSP dataset, setup and perform- full-waveform inversion- reverse time-migration•uilding machine learning model to perform denoising on VSPdatasets Geoscientists who are interested to create, design and learnprogramming to develop their ideas from imagination to real-worldsolutions. This course will demonstrate to them the power of opensource programming languages such as JULIA, and enable them touse it in there day to day tasks while testing it in real-time to furtherextend it to be ready to deploy on the production scale. The audience is expected to have prior knowledge of basic signalprocessing concepts such as correlation, deconvolution and Fouriertransforms and seismic processing background. machine learning julia open source geophysics imaging inversion pre-processing denoising data visulalization quality control | |
| 19 Sep — 19 Oct 2022 | Developing Deep Learning Applications for the Oilfield: From Theory to Real World Projects An EAGE Extensive Online Course | Bernard Montaron | Data Science | Machine Learning | Extensive Online Course | 2022 | September | EAGE | ||
| 20–23 Sep 2022 | Applied Microfacies Interactive Online Short Course | Prof. Dr Michael Poppelreiter | Geophysics | Integrated Geophysics | Interactive Online Short Course | 2022 | September | EAGE | Hands-on microfacies characterization using industry data sets. Analysis:mineralogy, components, pore types, diagenesis. Participants areinstructed on how to capture observations such that patterns andrules might be detected. The course encourages participants to thinkof processes and products during thin section characterization.Industry data sets are used to illustrate the use of microfacies characterizationto help solve operational issues of carbonate fields.Production increase is demanded. Wells (fully cored) show contraryproduction behavior. The stratigraphy is ‘ayer cake’nd both wellsare perforated in the highest perm interval of a few meters thick.Thin sections are linked with petrophysical data, openhole logs andproduction data. Course participants are encouraged to use thinsection descriptions to develop a conceptual model for permeabilitybased on a depositional model architecture based on the investigationof available this sections. Upon completion of the course, participants will be able to:•uality control thin sections.•etermine the mineralogy of a stained section.•haracterize fossiliferous and non-fossiliferous components suchas ooids or brachiopods.•lassify the carbonate texture (Dunham) and grain geometry. The course is designed for geologists, petrophysicists, stratigraphersas well as explorers in academic and industry positions. Participants should have knowledge of the principles of carbonategeology and a fundamental understanding of petrophysics. carbonates diagenesis mineralogy permeability stratigraphy thin section wells | |
| 26–28 Sep 2022 | Seismic Diffraction – Modeling, Imaging and Applications Interactive Online Short Course | Tijmen Jan Moser | Geophysics | Integrated Geophysics | Interactive Online Short Course | 2022 | September | EAGE | The application of seismic diffraction imaging (DI) in the E&P industryhas rapidly accelerated in recent years and is now positioned to makea major impact as a routine method combined with PSTM and PSDM.This is because the uplift in resolution and detectability of small scalefeatures offered through the imaging of the diffracted wavefield isfundamentally superior to attributes derived from post-processing ofthe reflection image. Applications cover a very wide range of objectivessuch as faults, fractures, karsts, stratigraphic edges, channels,fluid escape pipes, volcanic pipes, injectites.This course covers both the forward and inverse problem of seismicdiffraction. The coverage of the forward problem extends from thediscovery of the phenomenon of diffraction and the basic formulationsof Fresnel and Kirchhoff to the evolution of modern seismicdiffraction modeling. Diffraction imaging will be covered from theearly works in the 1970s up to the present state of the art. Casestudies will be presented covering examples for both structural andstratigraphic targets.The course will put emphasis on key components for successful DIcase studies:•ull integration of all available data, such as well data, legacy seismic,prior interpretation•ptimal focusing during pre-processing, model building and migration•alibration of DI by Fresnel zone sampling to identify differentcomponents of the wavefield offering different interpretationperspectives•alidation of DI by forward modeling exercises at various scales(elementary conceptual models, bespoke models, full-detail scenarios)•ustomization to interpretation throughout the workflow Upon completion of this course, the participants will:•ave a detailed and up-to-date understanding of the physics ofdiffraction, diffraction modeling and imaging•e able to effectively communicate the key aspects of diffractiontechnology with other professionals•ave a good understanding of the added value that seismic diffractionbrings to current exploration and production projects First day (4 hrs)1. Introduction•otivation, basic ideas and concepts•eflection versus diffraction•pplications of diffraction analysis and imaging•nterpretation value2. History•iscovery and founding years (1650-1820): Grimaldi, Huygens,Newton, Young, Fresnel, Poisson, Arago•calar diffraction: mathematical foundation —9th century:Green, Helmholtz, Kirchhoff, Sommerfeld•owards Geometrical Theory of Diffraction —arly 20th century:Maggi, Rubinowicz, Keller•owards Modern Theory: Trorey, Klem-Musatov3. Diffraction Modeling•otivation, definitions, objectives•hysical modeling•umerical modeling: integral methods, boundary layer methods,surface and caustic diffraction, finite differences, time-lapse, scatteringmethodsSecond day (4 hrs)4. Imaging•otivation, definitions, objectives•natomy of diffraction•iffraction and standard processing•etection of diffracted waves•eparation of diffracted waves•nversion of diffracted waves•maging•ommon Reflection Surface/Multifocusing•ocusing and velocity estimation•racture detection•odel-based diffraction imaging•llumination: edge and tip diffraction imaging•esolution and super-resolution•mage processing and diffraction imagingThird day (4 hrs)5. Applications/case studies•arbonate Shales, Carbonate Ridges•aults And Fractures, Fault Detection, Reservoir Fault Interpretation,Fractured reservoirs, Basement Fractures•luid Escape Features, Volcanic Pipes, Vertically Aligned Objects•hannels•round-Penetrating Radar Case Study The course is designed for a general audience of geophysicists, geologistsand reservoir engineers. Prerequisites are a basic knowledge of seismic processing and imagingand a very elementary mathematical background.Recommended readingKlem-Musatov K., Hoeber H.C., Moser T.J. and Pelissier M.A. (editors)2016. Classical and Modern Diffraction Theory, GeophysicalReprint Series Nr 29, SEG.Klem-Musatov K., Hoeber H.C., Moser T.J. and Pelissier M.A. (editors)2016. Seismic Diffraction, Geophysical Reprint Series Nr 30, SEG. diffraction high-resolution imaging full illumination structural and stratigraphic interpretation channels fluid-escape pipes faults fractures carbonates well planning case study | |
| 3 Oct — 3 Nov 2022 | Non-Seismic Data Acquisition and Processing: Gravity and Magnetics An EAGE Extensive Online Course | Jaap Mondt | Near Surface | Non-Seismic Methods | Extensive Online Course | 2022 | October | EAGE | ||
| 4 Oct — 4 Nov 2022 | Data Science for Geoscience An EAGE Extensive Online Course | Jef Caers | Extensive Online Course | 2022 | October | EAGE | ||||
| 5–7 Oct 2022 | Land Seismic Survey Design Interactive Online Short Course | Paul Ras | Geophysics | Seismic Acquisition | Interactive Online Short Course | 2022 | October | EAGE | This course presents an integrated approach to modern land 3D seismic surveydesign as it has a key role in the seismic value chain going from acquisition toprocessing, imaging and inversion & characterization. It will describe the maintechnology advances in land seismic acquisition: high-channel count single sensor(point receiver), simultaneous source high-productivity vibroseis, broadband andwireless nodal systems. New acquisition technology has in turn inspired progressin processing, imaging and inversion & characterization. Seismic survey designshave changed accordingly, wide azimuth high-density surveys are now the normin many environments. And the survey design workflow now includes singlesensor, single source, simultaneous source, broadband, symmetric sampling, cross-spreads, spatial continuity and more powerful 5D interpolation methods. It hasalso become more integrated, with requirements from processing, imaging andinversion & characterization feeding back to the design and hence acquisition. The purpose of this course is to understand:•he main parameters related to land survey design;•he generic land seismic survey design workflow;•he impact of the new acquisition technology on survey design;•ow design and acquisition affects processing, imaging and inversion andcharacterization. 1. Introduction: setting the stage discussing the survey design process as part ofthe seismic value chain and from the perspective of integrated project design;2. Survey design workflow: generic survey design workflow introducing thebasic design parameters and explaining how they are estimated. Amongother things this involves survey objectives, resolution, signal and noise. Inthe next sections, we will show the impact of the new technologies;3. The advent of high-channel count systems has enabled single sensor (or pointreceiver) recording. This can provide unaliased sampling of signal and noiseenabling easy removal of in particular near surface source generated noise;4. Simultaneous source hi-productivity vibroseis: acquiring data from multiple(groups or single) vibrators simultaneously from different source locations, whichcan improve spatial sampling and reduce cost by increasing productivity;5. Broadband: driven by imaging and inversion requirements, there has beena major technology effort to increase bandwidth, mostly on the low butalso on the high frequency side of the spectrum;6. Wireless nodal systems significantly improve operational flexibility inrestricted areas; increasingly being used with single sensors. Nodaltechnology is developing fast with higher channel counts while improvingWifi & Bluetooth technology enables better QC;7. The impact of survey design at the data processing stage includes receiversampling for adequate noise suppression, improved source sampling forwell sampled gathers (cross-spread, source, receiver) and fold (trace density).When we design the survey, we can for instance ensure well interpolated& regularized input to imaging, understanding of multiple behaviour, andenable good surface wave inversion for near surface modeling;8. At the imaging stage we should ensure spatial continuity, good spatialsampling (CMP bin), trace density, azimuth/offset sampling for azimuthpreserving OVT migration, sufficient migration aperture and bandwidth. Wecan model for good illumination;9. To ensure optimum inversion –n particular pre-stack and AVOAz –ndreservoir characterization, wide azimuth, high-density survey designscan provide good azimuth/offset sampling and S/N. Low frequency data(broadband) will reduce the dependency on well data, high frequency dataand good spatial sampling will optimize resolution;10. Finally, there will be a quick look at some future developments likeongoing research efforts in the area of vibroseis sources, simultaneoussources and wavefield interpolation. Acquisition geophysicists who are naturally involved in survey design but alsoprocessing geophysicists and interpreters who wish to understand how acquisitionprogrammes can be tailored to tackle their problems. The course may alsobe beneficial to geoscience (geophysics and geology) students. Participants are assumed to have basic knowledge of seismic acquisition andprocessing techniques. 3d broadband imaging integration inversion land seismic modeling noise sensors signal processing simultaneous source vibroseis wide azimuth | |
| 11–14 Oct 2022 | Sedimentological Characterization of Carbonate Rocks Interactive Online Short Course | Dr Catherine Breislin and Dr Laura Galluccio | Geology | Carbonate Geology | Interactive Online Short Course | 2022 | October | EAGE | More than 60% of the world’ oil and 40% of the world’ gas reservesare held within carbonate rocks. An understanding of thesewill ultimately help improve sedimentological facies and reservoirquality prediction while reducing uncertainties with respect to reserveestimates and potential oil/gas recovery. The first part of thiscourse provides an understanding of the fundamentals of carbonatesedimentology, together with the skills required to characterize andinterpret carbonate rocks, in order to establish an understandingof their depositional environment and implications for reservoir geometryand extents. In detail, the course offers an insight into theenvironmental, biological, physical, chemical and climatic controlson the carbonate factory, enabling facies analysis. In addition, sequencestratigraphical methods and their application will be coveredin the second part of the course to provide all the tools needed toreconstruct the sedimentological architecture at the field scale. Thesefactors help reduce uncertainties associated with the prediction ofgeometries and lateral heterogeneity within carbonate reservoirs.Part A: in order to appreciate the evolution and development ofcarbonate sediments, a basic understanding of the chemical, biologicaland physical processes involved in their formation is essential.The first part of this course outlines the controls on carbonateproduction (the carbonate factory), and the impact of carbonateproducers on carbonate accumulation and hence implications forcarbonate body geometries. It considers the key textural (Dunhamclassification), mineralogical, compositional and fabric/sedimentarystructure observations necessary to help evaluate and interpret carbonaterocks. Carbonate deposition is controlled by a wide rangeof internal and external factors, including the light, temperature,energy levels, salinity and nutrient availability. Understanding thesefactors provides a better perspective on the nature and distributionof carbonate sediments, and thus, enhances reservoir descriptionand the subsequent construction of more robust depositionalmodels. The effects of the environmental controls on carbonateproduction, wherever possible, will be illustrated with observationsfrom modern day analogues.Part B: To fully understand carbonate systems, it is necessary toappreciate the larger scale depositional settings within which theydevelop. An understanding of the tectonic setting and the depositionalgeometry of a carbonate platform is vital in developingaccurate depositional models. These aspects, together with thetypes of carbonate accumulations and their applications, will befully addressed in this course. Finally, the principles of sequencestratigraphy, its importance in subsurface carbonate reservoircharacterisation and the tools and techniques required for the applicationof sequence stratigraphy will all be covered. Overall, thesefactors aid in the prediction of the sedimentological heterogeneityexpected at the large-scale, and hence, the interpretation of thereservoir architecture. Upon completion of the course, participants will have:• good understanding of a carbonate system, including the majorcontrols on carbonate production;•n appreciation of the heterogeneous nature of carbonate sedimentsand how this may impact predictability variations withinthe subsurface;•n understanding of the techniques used to apply a sequencestratigraphic framework in a typical carbonate succession, andhence the impact on reservoir quality prediction. The course will be organised into two sessions:Part A: The carbonate system - “arbonates are born not made”•he mineralogy of carbonates;•he composition of carbonate rocks: skeletal vs non-skeletal allochems;•lassification of carbonate rocks;•he controls on carbonate production;•he carbonate factory - the impact of carbonate producers on thecarbonate accumulation geometry;•ypes of carbonate accumulations;•pplied carbonate facies analysis;•ypical carbonate facies observed in core and thin-sections;•he key to identifying carbonate depositional environments.Part B: Sequence stratigraphy applied to carbonate reservoirs•ntroduction to the basic concepts of sequence stratigraphy;•arbonate record and sea level;•ethods used to establish a sequence stratigraphic framework;•rediction of the sedimentological heterogeneity and interpretationof the sedimentological reservoir architecture.Each section will be accompanied by example case histories andexercises. This course is designed for petroleum geologists, geoscientists,petrophysicists and engineers involved in exploration and productionof carbonate plays. Although previous knowledge on carbonate sedimentology is notnecessarily required, participants should have some knowledge ofgeology. carbonates reservoir characterization sedimentology stratigraphy | |
| 20–21 Oct 2022 | New Tools and Approaches in Reservoir Quality Prediction Interactive Online Short Course | Dave Cantrell | Geology | Carbonate Geology | Interactive Online Short Course | 2022 | October | EAGE | Reservoir quality prediction has historically been the “oly grail”f reservoir geologists, yet few have been completely successful atachieving this in a truly quantitative fashion. Most oil companieshave traditionally based their reservoir quality prediction efforts ongeostatistical models that are primarily driven by well and seismicdata, usually with some input from qualitative studies of outcrop andobservations of modern sedimentary processes. Prediction resultsfrom such studies are often less than optimal, especially in areaswhere data quality is poor and/or data coverage is sparse.The sheer complexity of factors controlling reservoir quality in thesubsurface makes prediction challenging, especially in carbonates.These factors include primary depositional texture and composition,as well as a wide variety of post-depositional modifications that occurto the sediment during and after burial. Developing quantitativetools that allow the prediction of reservoir quality ahead of the bit,and ideally pre-drill, can provide enormous benefits for both explorationand development drilling by reducing the risk associated withexploitation of heterogeneous intervals.Reservoir quality prediction means different things to different people;this workshop outlines an approach that’ based on an understandingof the geological processes that control reservoir quality, andwhich allows the quantitative prediction of reservoir quality (porosityand permeability) ahead of the bit. To accomplish this, this workshopfirst provides an overview of the main controls on reservoir quality inboth clastic and carbonate rocks, and then presents a new approachto pre-drill reservoir quality prediction that involves the integration ofa variety of modelling techniques to understand, quantify and predictthe geological processes that control reservoir quality. Since the initialreservoir quality framework is established at the time of depositionby a variety of depositional controls, this workflow uses numericalprocess models to predict initial reservoir quality; results from thesemodels are then modified via a series of other modeling technologies(compaction models, kinetic cementation models, reaction transportmodels, etc.) to quantify and predict various diagenetic modificationsthat have significantly affected reservoir quality in the intervalof interest. This approach successfully integrates these two differenttechnologies into one workflow that holistically predicts reservoirquality. Several case histories will be shown in which this approachhas been successfully applied. Upon completion of the course, participants will be able to understand:•he main controls on reservoir quality, for both clastics and carbonates•he main principals behind a geologically process-based approachto reservoir quality prediction•he quality and power of geologically based predictions, as well assome of the inherent limitations•ow geological process models can be used to assess uncertaintyin prediction results. Introduction to reservoir quality•ontrols on reservoir quality in clastic and in carbonate rocksIntroduction to geological process based modeling•hat is process modeling and how does it work?•ow process based modeling fits into an overall reservoir qualityprediction framework•hat differentiates process modeling from other types of geologicalmodeling•ey input parameters in process modelingOverview of process modeling in siliciclasticsCase History #1 : Modeling a Paleozoic sandstone reservoirs in theMiddle EastOverview of process modeling in carbonates•istinctive aspects of carbonatesCase History #2 : Modeling a carbonate reservoir in the Middle EastConclusions The course is designed for geologists, reservoir engineers and technicalmanagers - and for all others looking to enhance their understandingand ability to predict reservoir quality. Some knowledge of geology, geological processes, and the mainchallenges of reservoir quality prediction would be helpful. basin analysis case study deposits diagenesis facies integration mapping porosity reservoir characterization reservoir modeling sediment sequence stratigraphy sparse data | |
| 8 Nov — 8 Dec 2022 | Introduction to Machine Learning for Geophysical Applications An EAGE Extensive Online Course | Jaap Mondt | Data Science | Machine Learning | Extensive Online Course | 2022 | November | EAGE | ||
| On Demand | Carbonate Reservoir Characterization Self-paced Online Course | Dr Laura Galluccio | Geology | Carbonate Geology | Self-paced Online Course | 2022 | July | EAGE | geology carbonate geology | |
| On Demand | EET 13: Velocities, Imaging, and Waveform Inversion - The Evolution of Characterizing the Earth's Subsurface Self-paced Online Course | Dr Ian Jones | Geophysics | Seismic Processing | Self-paced Online Course | 2022 | July | EAGE | geophysics seismic processing | |
| On Demand | Geostatistical Reservoir Modeling Self-paced Online Course | Prof. Dario Grana | Geophysics | Seismic Reservoir Characterization | Self-paced Online Course | 2022 | July | EAGE | geophysics seismic reservoir characterization | |
| On Demand | Shell: Geology for Non-geologists Partner Course | Young-Kon Yong (main instructor) | Geology | Geological Modeling | Partner Course | 2022 | July | Shell | geology geological modeling | |
| On Demand | Metakinetic: Borehole Breakout Analysis Partner Course | Simulation-based training | Geology | Geomechanics | Partner Course | 2022 | July | Metakinetic | geology geomechanics | |
| On Demand | Metakinetic: Detectability Analysis Partner Course | Simulation-based training | Geophysics | Passive Seismic | Partner Course | 2022 | July | Metakinetic | geophysics passive seismic | |
| On Demand | Metakinetic: PVT Analysis Partner Course | Simulation-based training | Engineering | Reservoir Engineering | Partner Course | 2022 | July | Metakinetic | engineering reservoir engineering | |
| On Demand | Metakinetic: Rock Mass Rating Partner Course | Simulation-based training | Engineering | Rock Mechanics | Partner Course | 2022 | July | Metakinetic | engineering rock mechanics | |
| On Demand | Metakinetic: Volume of Shale - Gamma Ray Log Partner Course | Simulation-based training | Geology | Petrophysics | Partner Course | 2022 | July | Metakinetic | geology petrophysics | |
| On Demand | Metakinetic: Wedge modeling Partner Course | Simulation-based training | Geophysics | Seismic Processing | Partner Course | 2022 | July | Metakinetic | geophysics seismic processing | |
| On Demand | In Pursuit of Increased Seismic Resolution while preserving Amplitude Fidelity E-Lecture Recording | Joseph Reilly | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage e-lecture: advances in acquisition and processing technology are an enabler for improving the resolution of our seismic images. however, care must be taken to ensure these imaging enhancements retain the amplitude fidelity necessary to allow for accurate reservoir identification and characterization; including detailed avo/dhi analysis. acquisition, processing and interpretation all play important and interrelated roles in obtaining the maximum utility from the seismic data. in this electure we will discuss where resolution and data fidelity can be gained or lost, what factors primarily determine bandwidth recovery, and what decisions still need to be made in a somewhat subjective, target oriented manner. in the presentation data from the guyana marine deepwater environment will be used to demonstrate fundamental principles and the evolution of acquisition and processing workflows over the history of this project. finally, we will suggest areas where additional improvements can be achieved in seismic field technologies, processing and interpretations workflows. | |
| On Demand | Full Waveform Inversion of Love Waves in Anisotropic Media E-Lecture Recording | Valérie Krampe | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | this eage e-lecture: "full waveform inversion of love waves in anisotropic media" (valérie krampe, eth zürich), deals with the integration of vertical transverse isotropy in seismic full waveform inversion. vertical transverse isotropy is a type of anisotropy that is typical for horizontally layered sediments. our focus lies on near-surface applications of full waveform inversion, where the wavefield is dominated by surface waves. by inverting only the sh-component of the seismic data, the inverse problem is reduced to three independent parameters, namely the vertical and horizontal s-wave velocities and density. with numerical examples, we show that the two velocity models can accurately be resolved by full waveform inversion. in comparison to an isotropic inversion, a more comprehensive subsurface model can be obtained, which allows a better characterization of shallow anisotropic media. | |
| On Demand | Automated top and base salt interpretation using machine learning E-Lecture Recording | Oddgeir Gramstad | Data Science | Machine Learning | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture: "automated top and base salt interpretation using machine learning" describes a new automated workflow based on machine learning which can significantly reduce the amount of manual interpretation of the top and the base salt boundaries. manual interpretation of salt boundaries on large seismic surveys with complex salt geometry is a time-consuming task. the interpreters typically need to scan through the seismic volume and pick surface control points line-by-line. it can take more than a month to complete a top or a base of salt interpretation. in this new method, two convolutional neural nets are designed to detect the top and the base of salt boundaries and the training data are picked as 2d images on two manual interpretations in a specific seismic survey. the trained networks are then evaluated both on the seismic data used in the training and on another seismic data not used in the training. in both cases we can produce a top and base salt interpretation that covers the main parts of the corresponding manual interpretations. the results can be further improved by adding more training data. this new automated workflow has the potential to reduce the interpretation turnaround time of both top and base of salt from approximately a month or more and down to hours. | |
| On Demand | Assessing the link between EMI data and hydrocarbon pollution at a former refinery site E-Lecture Recording | Luis Cavalcante Fraga | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | this eage e-lecture: "assessing the link between emi data and hydrocarbon pollution at a former refinery site" brownfield redevelopment is an answer to create potential building areas inside cities and avoid urban sprawl. however, soils and groundwater in place have often been contaminated by former activities. environmental assessments (ea) are thus necessary to characterize and estimate the contaminated volume of soils and the site rehabilitation cost. nevertheless, classical investigation techniques (boreholes, piezometers, sample analysis) can only provide punctual observations and are cost and time intensive. electromagnetic induction (emi) methods in the frequency domain can complement these investigations and map electromagnetic soil properties (soil-apparent electrical conductivity and in-phase component) in a quasi-continuous way at a site scale. linking these indirect geophysical properties to the soil chemical analysis through a geostatistical modelling could provide a better quantification of the pollution source and its spreading. besides, the effect of urban emi noises from urban utilities (transmission wires, underground cables and structures…) must be assessed for a successful data fusion. to evaluate the feasibility of this geophysical-geochemical-geostatistical approach, we present the first results of a study conducted over a 3 000 m² brownfield site. | |
| On Demand | Joint VP and VS Monte Carlo Inversion from Surface Wave Data E-Lecture Recording | Farbod Anjom | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | this eage e-lecture: "joint vp and vs monte carlo inversion from surface wave data" in common seismic surface wave methods, the surface wave dispersion curve is exploited to estimate the s-wave velocity (vs) model. since the dispersion curve is poorly sensitive to p-wave velocity (vp), the vp models usually are not the target of these methods. recently, the concept of the wavelength-depth (w/d) relationship, which is proven to be sensitive to both vs and vp, has been introduced. the joint inversion method presented in this e-lecture considers both surface wave dispersion curve and w/d relationship to estimate high-resolution vs and vp models. the method’s application to a field data set from a controlled site is shown, and the estimated vs and vp models are compared with benchmark values. | |
| On Demand | Permeability prediction from Induced Polarization at field scale E-Lecture Recording | Gianluca Fiandaca | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage e-lecture: “permeability prediction from induced polarization data at field scale” we present the estimation of intrinsic permeability from time-domain spectral induced polarization (ip) data, measured in boreholes and along 2d surface profiles. the mapping of intrinsic permeability (k), which is a measure of the ability of a porous medium to allow fluids to pass through it, is the holy grail of hydrogeophysics, but it has eluded attempts of resolution in the past. in this study full-decay ip data were inverted in terms of a re-parameterization of the cole-cole model, which present smaller parameter correlations and disentangles bulk and surface conduction. permeability values were computed from bulk conductivity and the maximum imaginary conductivity, using the empirically-derived formulae presented in a recent study without any calibration. the ip-derived k estimates, obtained from data acquired along sixteen 2d surface profiles and three boreholes on unconsolidated formations, were compared to those estimated using grain size analysis and slug tests, for a total of 157 comparisons. a good correlation, on average within one decade, was found between the k estimates over four orders of magnitude, with similar depth-trends. in conclusion, ip can be reliably used for estimating permeability on unconsolidated formations at the field scale, using the relations found in the laboratory without any further calibration. | |
| On Demand | Seafloor Massive Sulfide Eploration - A New Field of Activity for Marine Electromagnetics E-Lecture Recording | Hendrik Muller | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | seafloor massive sulfides (sms) are modern equivalents of vms deposits in the deep ocean and likely become significant sources for base and precious metal supply in the near future. electrical and electromagnetic (em) methods have shown success in locating sulfide ore deposits. however, system operation in rough mid-ocean ridge topography and data interpretation of marine polymetallic sulfides is still challenging. we present a new marine em instrument together with an integrated geophysical mapping approach for resource assessment and subsurface classification, correlating field em data with petrophysical and geochemical analysis. results provide first insights into the subsurface architecture of active and extinct sulfide ore deposits on central indian ridge and demonstrate the efficiency of this new method for deep-sea mineral exploration. | |
| On Demand | Feasibility of 3D random seismic arrays for subsurface characterizations in urban environments E-Lecture Recording | Bojan Brodic | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage e-lecture: "feasibility of 3d random seismic arrays for subsurface characterizations in urban environments" evaluates the feasibility of random - jittered seismic sampling for active and passive seismic imaging of potential contaminant migration pathways in urban environments. by using datasets acquired at a contaminated site in varberg city in southern sweden, bojan brodic compares the tomographically obtained velocity models from active-source jittered array versus conventional 2d landstreamer seismic data acquisition. apart from the active-source part, the ambient noise recorded on the random seismic array is used further for retrieval of the green's functions with surface waves successfully obtained. the processes and steps necessary for both active-source and passive seismic analyses are explained in an illustrative and easily understandable manner. the results show that the jittered seismic sampling shows advantages over conventional 2d landstreamer seismic by providing 3d velocity model of the bedrock surface and it's undulations that are used as contamination migration pathways and potential of the random seismic array for ambient noise studies. | |
| On Demand | Seismic Attenuation: Friend or Foe E-Lecture Recording | Mark Vardy | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage e-lecture: "seismic attenuation: friend or foe", we assess the role of attenuation in marine near surface seismic reflection data sets and discuss whether it is a potentially useful property for quantitative characterisation of the subsurface. the basic theory of intrinsic attenuation is briefly outlined, introducing the seismic quality factor (q-factor) parameter. we show several methods that can be used to make estimates of the subsurface q-factor from single-channel or short-offset seismic reflection data and how basic data quality can be improved by compensating for attenuation. moreover, we look at how variations in q-factor reflect changing ground conditions, demonstrating a strong link with sediment lithology and drained versus undrain soil mechanical behaviour. by combining q-factor estimates with more standard geophysical parameters (p-wave velocity and/or impedance) we illustrate how fundamental ground conditions can be inferred using geophysical data alone. as such, we suggest that attenuation should be considered a useful quantitative parameter, alongside reflection amplitude, phase and frequency. | |
| On Demand | METIS, a field-proof innovative method to revolutionize onshore seismic acquisition E-Lecture Recording | Bruno Pagliaccia | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage e-lecture: "metis, a field-proof innovative method to revolutionize onshore seismic acquisition": metis (multiphysics exploration technology integrated system) is an randd project aimed to make seismic acquisition 4.0 a reality. from logistics to real-time data qc, the entire process has been redesigned with an holistic approach. an hybrid airship to replace helicopter, wireless/real-time/biodegradable sensors to automatize data acquisition and a command and control center to operate the system from the base camp. all these elements will allow low-cost, safe and efficient seismic operations in hard-to-reach places like the tropical rainforest of papua new guinea (png). end of 2017, the main technological bricks have been tested on prl 15 concession, located onshore png, with a demonstration pilot where more than 60 darts were successfully dropped from a drone, through the canopy, to the ground with a good coupling. after few shots made with a mud-gun, real-time data acquisition has been validated in one of the most challenging environment to acquire seismic data. this first step is paving the way to the next pilot where a full 3d seismic volume will be acquired after thousands of sensors dropped by an autonomous swarm of drones. | |
| On Demand | Near surface geophysics for engineering Student E-Lecture Recording | George Tuckwell | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | near surface geophysics for engineering: information vs risk", geophysical techniques are just a part of the full toolbox available for ground investigation in engineering and construction projects. using geophysics at the right time in the right way requires an understanding of the information each instrument produces, and how this relates to what is produced by other options, for example digging or drilling holes. the requirements of a geotechnical or geoenvironmental ground investigation are best stated as a requirement to reduce risk of unforeseen ground conditions to an acceptable level. what an acceptable level is depends on the site, the project, and the client’s informed attitude to risk. as a result of some ground investigation effort (and cost) what do you know, and what do you still not know? the talk will explore these concepts, and use case examples to demonstrate where geophysical techniques are most useful. | |
| On Demand | FWI with Optimal Transport: a 3D Implementation and an Application on a Field Dataset E-Lecture Recording | Jeremie Messud | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture: "fwi with optimal transport: a 3d implementation and an application on a field dataset", we present the application to a 3d real dataset of full waveform inversion (fwi) with optimal transport (ot) using the kantorovich-rubinstein (kr) distance as proposed by métivier et al. (2016). this approach involves an efficient numerical implementation for ot in time and space directions, allowing the lateral coherency of the traces to be taken into account; this has an important impact on the quality of the results. the approach also exhibits a reduced sensitivity to local minima compared to least squares (lsq) misfit. moreover the iterative method used for the computation of the kr distance allows the production of a set of intermediary solutions that span progressively from lsq to ot. we recall the main components of the approach and present its numerical implementation in 3d. we show the improvement of the results compared to lsq fwi on real datasets. | |
| On Demand | Quantitative prediction of injected CO2 at Sleipner using wave-equation based AVO E-Lecture Recording | Peter Haffinger | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage e-lecture: "quantitative prediction of injected co2 at sleipner using wave-equation based avo", wave-equation based amplitude-versus-offset inversion is a fundamentally new approach towards converting seismic pre-stack data into elastic subsurface properties. by solving the full elastic wave-equation, the routinely made assumption of a linear relationship between seismic amplitudes and reservoir properties is overcome. as a consequence interbed multiples, mode conversions and transmission effects over the inversion interval are properly accounted for. additionally, the method directly solves for compressibility and shear compliance, which are approximately three times more sensitive to fluid and lithology changes when compared to impedances. this makes the technology suitable for quantitative interpretation even in geologically highly complex scenarios. in this e-lecture, a high level introduction to wave-equation based avo inversion will be given and an application to the sleipner carbon capture and storage (ccs) project will be presented. | |
| On Demand | Structural Dip, Migration and Quantitative Interpretation E-Lecture Recording | Ehsan Z. Naeini | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | it is relatively well known that migration stretches the waveforms of dipping reflections. it is less well known how this impacts quantitative interpretation of the data where, at the heart of such workflows, the seismic is tied to the well and subsequently inverted to obtain acoustic and/or elastic properties. it is shown here how migration stretch distorts well tie, coloured inversion, and model-based inversion. a post migration first-order zero-offset deconvolution is introduced to remedy this drawback, and the result is demonstrated on a synthetic and a reverse time migrated image. finally, it is argued that full-waveform inversion would inherently handle the dips without any need for stretch correction. (references: cherrett 2013 and naeini 2018). | |
| On Demand | Depth Domain Inversion: a Least-squares Migration Approach to Quantitative Interpretation E-Lecture Recording | Claudio Leone | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | qi workflows assume that seismic amplitudes are only linked to contrasts in rock properties, and that other wave propagation effects such as illumination, absorption, etc. have been addressed during seismic data processing and imaging. this assumption is often not met. the consequence is that 1d wavelets can’t adequately relate seismic amplitudes to reflectivity contrasts, and conventional time-domain inversion approaches inevitably struggle to accurately estimate the elastic rock properties. the effects of irregular illumination can be modelled by point spread functions (psfs), and removed from the seismic image with an inversion directly in the depth domain (fletcher et at., 2012). this technique, called depth domain inversion (ddi), improves imaging and inversion results by correcting for the effects of irregular illumination caused by the geological structure and overburden velocity variations. a north sea case study is presented where ddi is enhances amplitude fidelity and resolution beneath cemented sand injectites. | |
| On Demand | Cracking Open the Black Box Student E-Lecture Recording | Jesper Sören Dramsch | Data Science | Machine Learning | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture: "cracking open the black box - making sense of machine learning and neural networks", machine learning in geoscience has made a strong return recently, being applied across all disciplines in geoscience. in this presentation jesper dramsch presents the basic concepts of machine learning and goes into detail why it is so popular. they then go on to explain how it is applied and how we can gain scientific insights from these blackbox models and start including domain knowledge and physical properties in these machine learning systems. | |
| On Demand | Making the Transition from Discrete shot Records to Continuous Wavefields – Data Examples E-Lecture Recording | Tilman Kluver | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture: a novel seismic acquisition and processing methodology is demonstrated. the method retrieves the response of the earth from data acquired with continuous source and receiver wavefields. the ideal source wavefield would be band-limited white noise. ways of generating a source wavefield which approaches the properties of white noise using existing air-gun equipment will be discussed using real data examples. seismic data acquired by triggering individual air-guns with short randomized time intervals in a near continuous fashion will be compared to seismic data acquired with large source arrays triggered every 25m. the continuous source wavefield improves the sampling of common-receiver gathers compared to conventional acquisition methods. spreading the source energy out in time results in reduced peak sound pressure levels with the new method. | |
| On Demand | Making the transition from discrete shot records to continuous wavefields - Methodology E-Lecture Recording | Stian Hegna | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this presentation a novel seismic method is introduced. the method utilizes continuous wavefields on both the source side and on the receiver side. it requires continuous seismic recording, and a continuous or near continuous source wavefield approaching the properties of band-limited white noise. the main operational benefits are reduced environmental impact of marine seismic sources, and potentially improved acquisition efficiency. the main geophysical benefit is improved spatial sampling on the source side both inline and potentially cross-line | |
| On Demand | Increasing Acquisition Efficiency by Acquisition of Data During Turns, Using a Multimeasurement Streamer E-Lecture Recording | Sneha Biswas | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture sneha biswas talks about the ability of multi-measurement streamers in conjunction with the acquisition of data during turns for an efficient marine seismic acquisition. acquiring data during turns is an approach to improve productivity of marine seismic surveys. data results post noise attenuation compares the quality of this data against straight line acquisition and demonstrates the usability of this turn data. | |
| On Demand | Reservoir Elastic Parameters Estimation from Surface Seismic Data using JMI-res: A Full-Wavefield Approach E-Lecture Recording | Aayush Garg | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | traditionally, reservoir elastic parameters inversion suffers from the unaccounted overburden multiple scattering and transmission imprint in the local input data used for the target-oriented inversion. in this e-lecture, we present a full-wavefield approach, called reservoir-oriented joint migration inversion (jmi-res), to estimate the high-resolution reservoir elastic parameters from surface seismic data. in the jmi-res, we reconstruct the fully redatumed virtual source-receiver data (local impulse responses) within the earth subsurface, while correctly accounting for the overburden internal multiples and transmission losses. then, we apply a localized elastic full waveform inversion on the local impulse responses to get the elastic parameters. we show that jmi-res provides much more reliable local target impulse responses, thus yielding high-resolution elastic parameters, compared to a standard redatuming procedure based on time reversal of data. moreover, this approach avoids the need to go full elastic for the whole subsurface, as within jmi-res elastic full waveform inversion is only restricted to the reservoir target domain. | |
| On Demand | Triple-Source Simultaneous Shooting, a Future for Higher Density Seismic E-Lecture Recording | Jan Langhammer | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | jan langhammer’s e-lecture has the following subject: reducing the crossline bin-size in marine seismic streamer exploration can be performed by using more sources without compromising the efficiency of the operation. triple-source in marine seismic streamer acquisition has been tested in the past, but with limited commercial success compared to dual-source acquisition. with the introduction of new and better low noise streamers, in addition to the ability to record and deblend simultaneous source data, it is time to revisit the use of triple-sources in marine seismic exploration for decreased crossline bin-size leading to better spatial resolution. a triple-source configuration can find its application in shallow and deeper water areas for imaging of targets where reduced crossline spacing and higher fold may be required | |
| On Demand | Improved Rock Property Estimation from Joint Inversion of PP and PS Reflectivities E-Lecture Recording | Ivan Lehocki | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture: "improved rock property estimation from joint inversion of pp and ps reflectivities". the objective of this work was to develop a method for joint inversion of pp and ps data with the goal of unique and accurate determination of important layer parameters, namely y1 and y2 ratios. the method also gives reliable estimates of density ratio, a parameter that can be directly linked to hydrocarbon saturations. the usage of the method is limited to the assumptions used in the derivation of zoeppritz’s equations, i.e. interface of two horizontal, homogeneous, isotropic, elastic layers. what is new? easy to understand approach for inversion of all four elastic parameters entering zoeppritz equations. | |
| On Demand | Sedimentology and Reservoir Properties of Chalk Student E-Lecture Recording | John D. Humphrey | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | this eage student e-lecture discusses general sedimentological characteristics of chalks and their potential as both conventional and unconventional hydrocarbon reservoirs. the principal focus is on the controls on sedimentation of these economically significant, fine-grained pelagic carbonate rocks. | |
| On Demand | Giant Regional Play Fairways from Modern Seismic Data - part 2 E-Lecture Recording | Neil Hodgson and Karyna Rodriguez | Geology | Structural Geology | E-Lecture Recording | On Demand | On Demand | EAGE | second part of the e-lecture “giant play fairways are play fairways for giants”. recent developments in exploration ideas: imaging pre-salt syn-rift clastics in gabon to inorganic carbonate deposition in the santos basin of brazil, from basin floor contourite – turbidite mixed clastic systems of the south atlantic, isolated carbonate build-ups in somalia and guyana, conjugate margins drawn together and understood in a dynamic topography framework, and illustrated with modern seismic examples. | |
| On Demand | Giant Regional Play Fairways from Modern Seismic Data - part 1 E-Lecture Recording | Neil Hodgson and Karyna Rodriguez | Geology | Structural Geology | E-Lecture Recording | On Demand | On Demand | EAGE | first part of the e-lecture “giant play fairways are play fairways for giants”. recent developments in exploration ideas: imaging pre-salt syn-rift clastics in gabon to inorganic carbonate deposition in the santos basin of brazil, from basin floor contourite – turbidite mixed clastic systems of the south atlantic, isolated carbonate build-ups in somalia and guyana, conjugate margins drawn together and understood in a dynamic topography framework, and illustrated with modern seismic examples. | |
| On Demand | Exploration Discoveries and Future Trends E-Lecture Recording | Andrew Latham | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | the oil and gas exploration industry has fixed its broken economics and emerged from the recent oil price downturn in good health. but the industry is now much smaller, with fewer companies drilling fewer wells. new field volumes discovered have fallen to 70-year lows. new plays and frontiers are often at the heart of the improved profitability. companies that are prepared to take greater exploration risks are reaping greater rewards. this e-lecture reviews some of the most important new discoveries behind these trends, and considers the future outlook for the sector. | |
| On Demand | Using Digital Music Technology for Geophysical Data Analysis and Interpretation E-Lecture Recording | Paolo Dell'Aversana | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture dell’aversana discusses how digital music technology can support geophysical data analysis and interpretation: we apply accurate mathematical transforms for extracting the spectrograms of geophysical data, such as seismic, electromagnetic and gravity data, well logs and so forth. then, the spectrograms are translated into sounds in standard musical formats and are imported into a software platform of digital music. we apply two complementary workflows to our converted “geo-musical” data: first, we use musical pattern recognition algorithms for automatic data mining and classification; second, we use interactive audio-video display in selected portions of the data set for allowing multisensory perception and advanced cognition. during the e-lecture we introduce the fundamentals of the approach. finally we show some applications to real data. | |
| On Demand | Maximising the Benefits of Full Waveform Inversion E-Lecture Recording | Fabio Mancini | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | full-waveform inversion relies on accurate starting models to avoid local minima. we remove this reliance by solving an augmented wave equation, designed to fit the data as well as the physics, in combination with imposing constraints. as a result we end up with an inversion scheme that produces good results in situations where conventional full-waveform inversion is known to fail. | |
| On Demand | A New Take On FWI: Wavefield-Reconstruction Inversion E-Lecture Recording | Felix Herrmann | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | full-waveform inversion relies on accurate starting models to avoid local minima. we remove this reliance by solving an augmented wave equation, designed to fit the data as well as the physics, in combination with imposing constraints. as a result we end up with an inversion scheme that produces good results in situations where conventional full-waveform inversion is known to fail. did you like this e-lecture? learn here how to request a webinar with felix herrmann. | |
| On Demand | Seismic Spatial Gradient Measurements E-Lecture Recording | Nihed el Allouche | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | rotation measurements have found applications in various fields of geophysics ranging from near-surface archaeological mapping to large scale upper mantle tomographic inversion. in the absence of a cost-effective sensor sensitive over the typical seismic frequency bandwidth, rotation measurement can be approximated by finite-differencing the response of the vertical particle velocity over a short distance. accurate estimates of the horizontal gradient of the vertical wavefield can be obtained when perturbations associated with the measurement are minimised. these perturbations can be sensor related, for example geophone sensitivity and natural frequency, and/or deployment related such as tilt and coupling errors. in this e-lecture, we show how perturbations can affect the gradient measurement (the tilt error turns out to be dominant) and discuss the minimum receiver spacing required to avoid the impact of perturbations dominating the gradient estimates. we also discuss a “sensitivity” chart ranking the perturbations according to impact and indicate which one of these needs to be minimised in order to obtain reliable gradient estimates. | |
| On Demand | A 2nd-order Adjoint Truncated Newton Approach to Time-domain Multiparameter Full Waveform Inversion in Viscoacoustic Medium E-Lecture Recording | Pegliang Yang | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture introduces a 2nd-order adjoint truncated newton approach to time-domain multiparameter full waveform inversion in viscoacoustic medium. a truncated newton method for time-domain full waveform inversion in visco-acoustic medium is developed using 2nd-order adjoint state formulation. time-domain gradient and hessian-vector product are built by recomputing the incident and adjoint wavefields. after the design of an efficient preconditioner, the importance of the inverse hessian for mitigating inter-parameter trade-off is validated on a toy example. a realistic 2d synthetic mimicking north-sea real data application demonstrates that considering hessian influence significantly improves the multi-parameter reconstruction, for a reasonable increase of the computational cost compared to standard quasi-newton method. | |
| On Demand | Theory for Marchenko Imaging of Marine Seismic Data with Free Surface Multiple Elimination E-Lecture Recording | Evert Slob | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture: theory for marchenko imaging of marine seismic data with free surface multiple elimination; introduces the theory for reflector imaging from marine seismic data that include ghosts, free surface and internal multiple reflections. first, we look at building the necessary redatuming operators from the data when the free surface would not be present. the redatuming operators are found as the focusing functions that are not influenced by the presence or absence of the free surface. next, a matrix equation is found from which the focusing functions are computed using the measured data decomposition into up- and downgoing waves. no other processing steps are required. the scheme does not need information about the source time signature or the actual character of the free surface. a macro-model is necessary to construct an estimate of the direct part of the focusing function. the ghost, free surface and internal multiple reflections do not create false images and an artefact free image is obtained. | |
| On Demand | Virtual Seismology: monitoring the subsurface with virtual sources and receivers E-Lecture Recording | Kees Wapenaar | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture introduces virtual seismology: monitoring the subsurface with virtual sources and receivers, which is a new methodology to create virtual sources and virtual receivers in the subsurface from reflection measurements at the earth's surface. unlike in seismic interferometry, no physical instrument (receiver or source) is needed at the position of the virtual source or receiver. moreover, no detailed knowledge of the subsurface parameters and structures is required: a smooth velocity model suffices. yet, the responses to the virtual sources, observed by the virtual receivers, fully account for multiple scattering. this method is not only useful for reflection imaging but is has also large potential for monitoring induced seismicity, characterizing the source properties and forecasting the response to potential future induced earthquakes. this will be demonstrated with numerical models and preliminary real-data results. | |
| On Demand | Chalk Porosity and Diagenesis Student E-Lecture Recording | John D. Humphrey | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | this eage e-lecture discusses diagenesis (post-depositional modification) of chalks and its effect on porosity evolution and reservoir quality. the principal focus is on the physical and chemical processes, as a function of burial, that alter these economically significant, fine-grained pelagic carbonate rocks. | |
| On Demand | Bedrock and Fracture Zone Delineation Using Different Near-Surface Seismic Sources E-Lecture Recording | Bojan Brodic | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture "bedrock and fracture zone delineation using different near-surface seismic sources" discusses a seismic survey conducted using four different small-scale and inexpensive seismic sources to delineate bedrock surface and a fracture zone intersected by a well at c. 50 m depth. the seismic sources analyzed are a 5-kg sledgehammer, a metal i-beam struck laterally, an accelerated weight drop and a prototype em based seismic source with two hammers striking successively at an adjustable impact rate. from the recording perspective, a high-fold (star-type) acquisition spread was designed combining a three-component microelectro-mechanical system (mems) seismic landstreamer and wireless seismic recorders. the performance of every source used is analyzed and reflection seismic sections, along with 3d tomography results shown. the results indicate well delineated undulating bedrock topography, both on tomography and seismic sections for all sources. weak reflectivity is observed where the fracture zone is expected. most of the sources used show similar potential for fracture zone and near-surface imaging and star-type seismic array used enables 3d overview of the shallow subsurface and potential for pseudo 3d reflection seismic processing. | |
| On Demand | Characterization of Holocene Sediments Using Geophysical Methods and Borehole Information: Ebro Delta (Spain) E-Lecture Recording | Beatriz Benjumea | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | beatriz benjumea shows the integration of geophysical and borehole information to characterize holocene sediments in the ebro delta (spain). nowadays, this delta coastline is retreating landward due to a combination of sediment subsidence, sea level rise and sediment deficit caused by river damming. measuring spatial changes of near-surface sediment facies is critical to evaluate subsidence. in this presentation, geophysical patterns that help to characterize the holocene sequence are extracted from borehole and geophysical information at two test sites. the applied methods are: active and passive seismic and electrical resistivity tomography (ert). these patterns are then used in an extended survey along the delta with the following targets: to discriminate between surficial sediments facies, to detect the top of the prodelta marine clays and finally to image the base of the holocene delta. | |
| On Demand | GeoBIM for Infrastructure Planning E-Lecture Recording | Mats Svensson | Engineering | Petroleum Engineering | E-Lecture Recording | On Demand | On Demand | EAGE | eage e-lecture: geobim for infrastructure planning by mats svensson. this e-lecture aims at bridging the gap between the deliveries from geophysicists to the infrastructure industry, so that the results from geophysics are used in the best possible way. the key to this is proper communication. for this we all need to know who all the stakeholders are and what interests, what skills and which tools do they have, and we also need to improve the tools we use. this e-lecture is trying to clarify those issues and also suggesting the powerful geobim concept to handle both data, models and communication, exemplified by a large railway project in sweden. | |
| On Demand | Reducing project turnaround by optimizing the model building workflow using full-waveform inversion and reflection tomography: A North Sea case study E-Lecture Recording | Shruti Gupta | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | two of the key challenges for velocity model building in the north sea are a heterogeneous overburden (for example, the presence of fluvial and sub-glacial channels) and the presence of strong velocity contrasts (most often introduced by a chalk layer). two model building techniques have been developed in recent years which address these challenges. full-waveform inversion (fwi) has been shown to be highly effective in resolving overburden heterogeneity and multi-layer tomography allows us to preserve sharp contrasts in our velocity models. in this eage e-lecture, we present how the combination of these two techniques provides an effective and efficient model building workflow for the north sea environment. | |
| On Demand | An Iterative Workflow for Facies Modeling on the Alvheim Field, Norwegian Continental Shelf E-Lecture Recording | Andor Hjellbakk | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture, andor hjellbakk will take you through some simple but effective principles for building a deterministic facies model for the deep-marine deposited tertiary reservoir of the aker bp operated alvheim field. the facies modeling workflow is combining state-of-the-art modeling techniques with input data from 100 km of penetrated reservoir, spectral decomposition (seismic) data and impedance data. further, the datasets from the subsurface is linked to observations from outcrop data to make sure realistic depositional trends and dimensional data are used in the modeling process. | |
| On Demand | Efficient 3D Frequency-Domain FWI of OBC Data E-Lecture Recording | Stéphane Operto | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | wide-azimuth long-offset obc/obn surveys provide a suitable framework to perform computationally-efficient 3d frequency-domain full waveform inversion (fwi) with a few discrete frequencies. frequency-domain seismic modeling is performed efficiently with moderate computational resources for a large number of seismic sources with the sparse multifrontal direct solver mumps. the relevance and the computational efficiency of the frequency-domain fwi performed in the visco-acoustic vti approximation is shown with a real 3d obc case study from the north sea. the subsurface models built by fwi show a dramatic resolution improvement relative to the initial model built by reflection traveltime tomography down to the base cretaceous reflector below the reservoir level. the relevance of the fwi model is assessed by frequency-domain and time-domain seismic modellings and source wavelet estimation, which might reveal the footprint of attenuation on the imaging results. | |
| On Demand | A Novel Source-Over-Cable Solution to Address the Barents Sea Imaging Challenges E-Lecture Recording | Per Eivind Dhelie | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | this eage e-lecture "a novel source-over-cable solution to address the barents sea imaging challenges " presents a full overview of the topseis source-over-cable solution. the challenging geologic setting in the barents sea is discussed and legacy seismic data is scrutinized in an effort to understand the fundamental challenges related to improved seismic imaging in the barents sea. the acquisition design behind the new technology is presented in detail, from the wide-towed small triple source setup to the split-spread deep towed streamers. deblending of triple sources is presented as well as a detailed overview of the challenging demultiple problem. a number of seismic image comparisons are also presented illustrating the benefit achieved with the new source-over-cable solution. the final part of the talk looks into the future and proposes possible solutions to obtaining similar acquisition setups, but using only a single vessel towing both the sources and the streamers. | |
| On Demand | Seismic Interpretation with Deep Learning E-Lecture Recording | Anders U. Waldeland | Data Science | Machine Learning | E-Lecture Recording | On Demand | On Demand | EAGE | how and why can deep learning be used for seismic interpretation? the machine learning technique called deep learning is revolutionizing the field of computer vision. a central part of deep learning is convolutional neural networks (cnn). this e-lecture gives a simple and intuitive introduction to cnns in the context of seismic interpretation. | |
| On Demand | Shooting over the Spread E-Lecture Recording | Vetle Vinje | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this lecture, i present the motivation, the evolution and the benefits of a new marine acquisition concept developed in close cooperation between lundin and cgg over the last few years. we call the concept topseis. it addresses the lack of near-offset data recorded in conventional towed-streamer acquisition by enabling the recording of short- and zero-offset data with the seismic sources located above the streamers. in addition, topseis significantly increases the illumination density (number of times a specific depth point is recorded) for both shallow and deep targets. this benefits imaging, avo and inversion as shown by several synthetic and real examples. | |
| On Demand | Microseismic Monitoring of a Tight Light Oil Reservoir Student E-Lecture Recording | John Duhault | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | this fundamentals e-lecture investigates the effectiveness of hydraulic-fracturing completions in a tight-oil play in canada by illustrating detailed examples of the passively recorded microseismicity. the case history format enables an easy to follow interpretation on the inference of fracture wing length, height and azimuth based on event distribution on several projects. the distribution of microseismicity further shows that isolated event clusters of out-of-zone events are interpreted to have occurred on unpropped fractures. slickwater fracturing fluids, in comparison to gelled oil or foamed water, are shown to produce more diffuse and scattered microseismic expression and a higher cumulative oil production. the results of these studies indicate the value that microseismic imaging of horizontal multistage fracturing wells has on guiding future oil field development, especially in maximizing estimated ultimate recovery (eur). | |
| On Demand | Seismic Facies Classification Using Multimedia and Machine Learning E-Lecture Recording | Paolo Dell'Aversana | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | paolo dell’aversana*1, gianluca gabbriellini1, gabriela carrasquero1, alfonso amendola1, alfonso iunio marini1 1eni s.p.a. upstream and technical services as it happens for natural intelligence, also artificial intelligence can be improved if it is able to analyze and interpret multimodal information. in this e-lecture, we show that training a computer with multimodal data, increases the possibility of seismic facies classification through machine learning algorithms. we use a new class of attributes in geophysics, representing ‘musical’ properties implicitly included in the data. together with traditional geophysical attributes, our multimedia machine learning system uses also melodic, harmonic and rhythmic patterns extracted from the data. all these new features show high classification power. in particular, they allow distinguishing low-gas from high-gas saturated sands, as showed in the real example discussed in this lecture. | |
| On Demand | How to store CO2 underground Student E-Lecture Recording | Philip Ringrose | Energy Transition | Energy Transition | E-Lecture Recording | On Demand | On Demand | EAGE | in this eage student e-lecture: phil ringrose from ntnu and equinor in norway gives an overview of co2 storage technology using insights from early-mover projects. | |
| On Demand | The Effect of Shale Activation on the 4D Seismic Interpretation of a UKCS Field E-Lecture Recording | Ricardo Rangel | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture, ricardo rangel talks about 'the effect of shale activation on the 4d seismic interpretation of a ukcs field'. he will present a case study and then go into more depth about simulation results, as well as seismic modelling and 4d seismic response | |
| On Demand | The Importance of Overburden Stress Path in Assessment of Stress Dependence for 4D Applications E-Lecture Recording | Rune M. Holt | Reservoir Characterization | Geomechanics | E-Lecture Recording | On Demand | On Demand | EAGE | the importance of overburden stress path in assessment of stress dependence for 4d applications. in time-lapse (4d) seismic, slow-down in the overburden is often seen as a footprint of depletion in subsurface reservoirs. the work presented in this lecture has demonstrated that for stress changes around the in situ stress, laboratory measured stress and strain sensitivity of a field shale core depends strongly on the stress path. translated to the field, the stress path describes how horizontal stress varies with changes in the vertical stress when stress arching occurs above a depleted (or inflated) site. geomechanical simulations are needed in order to identify the correct in situ stress path for each specific field situation, but 4d data may also provide guidelines towards the identification of the overburden stress path. | |
| On Demand | Combining Machine Learning and Musical Attributes for Seismic Facies Classification Student E-Lecture Recording | Paolo Dell'Aversana | Data Science | Machine Learning | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture we introduce a comprehensive approach of automatic classification and interpretation of geophysical data based on machine learning and digital music technology. the methodology consists of two main steps. first, we convert geophysical data into midi files (musical instrument digital interface). then, we extract midi features from the converted data. these “musical features” are finally used as complementary attributes for data classification through machine learning approaches. after introducing the basic methodological aspects, we discuss examples and applications to real geophysical data. | |
| On Demand | A Misfit Function Based on an Optimal Transport Distance for FWI E-Lecture Recording | Ludovic Métivier | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in the field of seismic imaging, full waveform inversion has become one of the key techniques to provide high resolution quantitative estimation of subsurface mechanical parameters such as wave velocities, density, attenuation, or anisotropy parameters. recent success stories have led both the academy and industry to investigate this technique. its applicability is however still limited for exploration targets, mostly because of the lack of low frequencies in the data which makes it difficult to correctly interpret the kinematic attributes of the wavefield. mitigating this issue is the motivation of the work proposed in this presentation. the strategy we present uses a new distance function between observed and calculated data, based on the optimal transport theory. this new distance provides a more convex misfit function: we show on several synthetic examples how this could help to make full waveform inversion a more robust and powerful tool. | |
| On Demand | Marine CSEM - Understand the quintessence Student E-Lecture Recording | Ludovic Peignard | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | understanding marine controlled source electromagnetics (mcsem), how it works and on what that relies is not that obvious due to multiple physical phenomena at stake (geometric, inductive and galvanic). in this e-lecture, ludovic peignard explains simply how electromagnetic waves are affected when diffusing in the subsurface with a very light content of theory. the idea is to put you on track to subsequently look at mcsem in more depth. | |
| On Demand | Simulating Correlated Discrete Fracture Networks constrained by Microseismic Data E-Lecture Recording | François Bonneau | Reservoir Characterization | Geomechanics | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture presents a workflow to simulate correlated discrete fracture networks (dfn) constrained by statistics and microseismic data. we investigate the possibility to analyze microseismic data using the 3d hough transform and to constraint the discrete fracture network simulation. then, we detail a sequential pseudo-genetic dfn simulation workflow that produces a hierachical dfn. it uses mechanical proxies inspired from mechanics to sample parameter distribution laws and to efficiently organize simulated fractures in space. this work has been funded by the ring consortium (https://www.ring-team.org). | |
| On Demand | ‘Online’ Marchenko Focusing and Target-oriented Modeling E-Lecture Recording | Patrick Elison | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | with the marchenko method one can derive an incident wavefield (a so-called focusing function) that focuses at an arbitrary location inside a medium and subsequently continues as a diverging wavefield. this is often denoted as creating "virtual sources” inside a medium. in this talk you will learn how such a focusing function can be obtained by iteratively sending a wavefield into a medium and simultaneously recording its reflection response. this requires control over densely sampled sources and receivers at the surface of an object in combination with an a-priory known smooth velocity model. further, this talk teaches you how the result of the marchenko scheme can be used for target-oriented seismic modeling, which is of use for localized inversion and time-lapse reservoir monitoring. | |
| On Demand | Viscoelastic Full Waveform Inversion; a Symmetrization Strategy E-Lecture Recording | Gabriel Fabien-Ouellet | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | seismic propagation may exhibit very complex physics, especially on land where elastic and attenuation are dominating effects. in this context, full waveform inversion (fwi) must move from the acoustic approximation to the more challenging viscoelastic wave equation. in this video, gabriel fabien-ouellet explains the theory behind viscoelastic full waveform inversion. using a symmetrization transformation of the problem, he shows how the adjoint state method can be modified to simplify the numerical implementation of viscoelastic fwi, and then presents the main challenges of inverting for attenuation. | |
| On Demand | Integrated Geophysics and New Methods for Multi-nodal Data Analysis E-Lecture Recording | Paolo Dell' Aversana | Geophysics | Integrated Geophysics | E-Lecture Recording | On Demand | On Demand | EAGE | the central subject of this e-lecture is the concept of “expanded integration”. this involves all the key aspects of the process of integration of geophysical and geological data. in fact, expanded integration includes combination of multi-physical, multi-scale, multi-domain and multi-sensory (images and sounds) information. this comprehensive approach is performed using new methods of data analysis. these are called “brain based technologies” because they take into account the key aspects of “high-level” human cognition, such as integrated perception, data fusion, imaging, mapping, combination of multi-sensory inputs and pattern recognition. | |
| On Demand | One 4D Geomechanical Model - and it's Many Applications E-Lecture Recording | Jorg Herwanger | Reservoir Characterization | Geomechanics | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture is a worked case-study in applied oilfield geomechanics: it introduces the elements of a geomechanical model, covers aspects of geomechanical model building and calibration, and works through three applications of the geomechancial model in support of operational decisions. the geomechanical applications presented by jorg include wellbore stability for drilling an inclined infill well, risk of fault re-activation during gas reinjection and fracture containment in individual reservoirs during hydraulic stimulation. | |
| On Demand | Q-Compensation Through Depth Domain Inversion E-Lecture Recording | Maud Cavalca | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | compensation for seismic attenuation inherent to the dissipative and dispersive nature of the earth remains a challenge in seismic imaging of complex media. in this e-lecture, maud cavalca briefly reviews various deterministic approaches that tackle the problem, and focuses on a scheme that compensates for q within depth domain inversion. she shows that this type of approach constitutes a viable and efficient alternative to ‘q-migration’ techniques that attempt at compensating for q during migration. | |
| On Demand | Automatic Gas Pockets Detection by High Resolution Volumetric Q-Tomography Using Accureate Frequency Peak Estimation E-Lecture Recording | Fatiha Gamar | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture, fatiha gamar explains how a high-resolution volumetric q tomography can be developed to attain an accurate volumetric estimation of the attenuation model. a key component of the workflow is the estimation of effective attenuation in the pre-stack data domain through accurate picking of the frequency peak. finally she presents a case study where this approach has been used to reveal shallow gas pockets and compensate for absorption in the migration. | |
| On Demand | Subsalt Time-Lapse Seismic for Reservoir Monitoring Using i4D in Deepwater E-Lecture Recording | David Chalenski | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | david chalenski presents a case study using a low-cost but high-data-quality seismic technique to monitor a waterflooded field. this technique, termed i4d, utilizes simple planning methods to decimate a source and nodal receiver patch from a previous full-field survey to monitor the area around a high-risk, high-yield well (such as a water injector) with high accuracy and confidence. he demonstrates that nodal surveys can be targeted even in a highly complex sub-salt field. if planned appropriately, expected data quality is equivalent to a full-field nodal survey. he shows the 4d results and presents business decisions which were influenced using the results of this survey. | |
| On Demand | Cognition and Seismic Interpretation Student E-Lecture Recording | Gaynor Paton | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | seismic interpretation involves high level cognitive processes in order to understand the information that is contained within the seismic data. in this e-lecture, gaynor paton looks at the cognitive processes involved in converting data into understanding, and how we can work in a manner that maximises our cognitive abilities. working in a way that is cognitively intuitive will reduce the effects of cognitive overload and give us more insight into the subsurface. | |
| On Demand | An Analytical Approach to Hydraulic Fracturing Student E-Lecture Recording | John Duhault | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture john l.j. duhault discusses the 15 things you should consider as part of a checklist to determine whether “to monitor or not to monitor” your project well operations while hydraulically fracturing, injecting into or depleting an oil or gas reservoir. | |
| On Demand | The Startup of Permanent Reservoir Monitoring for Snorre and Grane E-Lecture Recording | Mark Thompson | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | statoil has supported the development of geophysical reservoir monitoring (grm) techniques, and through a focused seismic monitoring (fsm) project, successfully piloted permanent reservoir monitoring (prm) technologies. in this e-lecture, mark thompson tells that this experience culminated in the implementation of two prm projects at the snorre and grane licenses. in december 2012, statoil awarded a contract to manufacture and deliver approximately 700 kms of seismic cable for prm installations, representing the largest prm installation to date. by october 2014, two full prm systems had been installed with first seismic acquired at both grane and snorre, and a second survey underway at snorre. in less than two years a major prm project had been successfully executed and first seismic acquired. | |
| On Demand | Chasing Channel Sands Student E-Lecture Recording | Peter Lloyd | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | with technical advances in surface seismic and downhole electrical imaging techniques, it is now possible to not only map the distribution of reservoir sandstones in the subsurface, but to accurately define the orientation of productive fairways, or “sweet-spots”, within the sequence. channel sands frequently have favourable reservoir characteristics. having often been laid down in higher energy settings, they commonly have coarser and better sorted grains, less clay and improved poroperm characteristics. however, they often have limited lateral extent and shoe-string geometries which make them more difficult to predict in the subsurface. in this presentation, peter lloyd will summarize the results of four case studies of how channel sands, laid down in different depositional settings, have been recognized with borehole imaging in exploration, appraisal and development settings. from sedimentary features and palaeocurrent directions within the sands it has been possible to determine their orientation and evolve improved exploration and development strategies. further complexities in reservoir characterization, caused by thin beds or bioturbation; and how these effects can be recognized on the images, and quantified using other electric log data, will be discussed. | |
| On Demand | An Introduction to Migration without a Single Equation E-Lecture Recording | Claudio Strobbia | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture is a primer on seismic migration: it introduces the principles of imaging, the assumptions and limitation, the artefacts. it discusses also the differences between time and depth migration, and examines the requirements of the simple time migration. claudio strobbia here explains these concepts in an easy and understandable way, with lots of illustrations and animations, and without a single equation. a simple and entertaining initiation to seismic imaging. | |
| On Demand | Barents Sea Case Study: Integrated Depth Velocity Model Building E-Lecture Recording | Marit Guttormsen | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture, marit guttormsen presents the results of a 3d obs dataset acquired in the barents sea. the result was a significant uplift in the structural image by imaging the pressure energy converted to shear energy (ps). in order to achieve the image an integrated velocity model building (vmb) flow, using several datasets and a variety of techniques, was implemented. the lecture attempts to summarize the key steps in such an integrated vmb workflow. | |
| On Demand | A Tutorial on Gassmann’s Fluid Substitutions Student E-Lecture Recording | Pierre-Olivier Lys | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | gassmann's equations are widely used in the industry to address the fluid substitution problem during seismic reservoir characterization. in this e-lecture, pierre-olivier lys shows how to use gassmann's equations properly, by explaining the fundamental assumptions that should be met, and by applying the gassmann's methodology in a step-by-step example. | |
| On Demand | Frequency Decomposition of Seismic Data Student E-Lecture Recording | Gaynor Paton | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | eage student e-lecture: frequency decomposition of seismic data by gaynor paton frequency decomposition and rgb blending are commonly used to aid seismic interpretation. this lecture looks at the three main methods of frequency decomposition and discusses the relative advantages of each technique. it also covers some short case studies showing how the correct technique should be used depending on the interpretation objective. the lecture also covers rgb blending and how this can be used to understand and interpret the frequency response volumes. | |
| On Demand | Sub-Salt modelling in 3D – Integration of Seismic, Well and Gravity Data, Validated by Drilling E-Lecture Recording | Antony Price | Geophysics | Integrated Geophysics | E-Lecture Recording | On Demand | On Demand | EAGE | offshore sub-salt seismic imaging along the west african margin is a challenge in many areas, and with complex salt geometry, seismic depth imaging alone faces certain limitations. in an effort to further de-risk structures sub-salt, antony price et al. integrated with gravity data in 3d. they detail that the incorporation of an independent geophysical parameter, such as density can effectively de-risk these difficult targets. coincident gravity anomalies and seismic base salt closures were observed in this locality. the gravity anomalies are larger in amplitude and not equivalent to any possible post-salt structure, independent of density. in short, the scenario 3d gravity modelling suggests that these are indeed sub-salt structures, most likely localized basement or some other high density closures - which is consistent with the seismic imaging. | |
| On Demand | Well Tie: Principles and New Advancements for Broadband Seismic Data E-Lecture Recording | Ehsan Naeini | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | in this presentation, naeini discusses a quantitative approach to do well tie and to qc the outcome. this covers the basic principles all the way to the latest developments for broadband seismic data. he shows some synthetic and real data examples and highlights the impact of time lag, phase, bandwidth and broadband wavelets for broadband seismic. | |
| On Demand | Wave-Equation-Based AVO Inversion for High-Resolution Reservoir Characterisation E-Lecture Recording | Dries Gisolf | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | wave-equation-based avo inversion aims at getting high-resolution property models from seismic data. these property models should allow the building of reservoir models and the estimation of reserves. wave-equation-based avo inversion fully utilises the non-linear relationship between seismic data and the properties to be inverted for, leading to a wider spatial bandwidth than could be expected on the basis of the temporal bandwidth of the data. also, it inverts directly for elastic parameters, giving a higher sensitivity to pore-fill than conventional impedances. | |
| On Demand | Applied AVO E-Lecture Recording | Anthony Fogg | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | avo (amplitude versus offset) analysis is a method many geoscientists may be aware of, but they perhaps do not know how the techniques are implemented and the best way to apply the technology. this e-lecture introduces the basics of the avo theory and how it is used to create attributes from seismic reflection data that reveal the underlying rock and fluid characteristics of the sub-surface. it uses synthetic models to demonstrate the importance of velocities and migration algorithms in obtaining the optimum seismic image for avo and subsequent pre-stack seismic inversion analysis. | |
| On Demand | Understanding Spectral Decomposition E-Lecture Recording | Victor Aarre | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | spectral decomposition is a standard tool in the seismic interpreters toolbox. it is also a complex tool to use. many implementations are provided as “black box” technology by vendors, and presented results are often spectacular. the scope of this lecture is hence to give the viewers a thorough scientific understanding of what spectral decomposition is, outline how it works, and explain what it can and cannot do. it has been an aim to keep the mathematical terminology simple, and properly explain the terms as they are introduced, such that the content becomes more accessible for an audience outside the hard-core mathematical community. | |
| On Demand | 3D Inversion of Magnetic Data Affected by Remanent Magnetization E-Lecture Recording | Yaoguo Li | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | the inversion of magnetic data in the presence of strong remanent magnetization has long been a challenging problem, because of the unknown direction of the total magnetization that is the vector sum of the induced and remanent components. this e-lecture presents three different techniques for tackling this problem: (1) direction estimation, (2) amplitude inversion, and (3) fuzzy c-means clustering magnetization inversion. combined with the existing susceptibility inversion, these techniques form a tool kit that allows one to invert virtually any magnetic data set for the purpose of quantitative interpretation in exploration applications. in particular, the magnetization inversion provides a new opportunity both for imaging source configurations and for carrying out geology differentiation. | |
| On Demand | Wide-Azimuth Acquisition with Radial Domain Interpolation for Fluvial Morphology Interpretation E-Lecture Recording | Anastasia Poole | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | the topic of anastasia poole’s e-lecture is wide-azimuth acquisition with radial domain interpolation for fluvial morphology interpretation. during this presentation she will demonstrate how an integrated approach helps to unlock the fluvial morphology reservoir potential using seismic. poole will cover the following topics: reservoir geology and economics evaluation, seismic survey design, seismic acquisition, processing and she will finish off with examples of inversion and interpretation. key technologies discussed in this presentation are: point-source point-receiver full azimuth/broad band acquisition, azimuth aware processing with radial domain interpolation to enable advanced seismic interpretation and rock properties extraction. | |
| On Demand | Seismic Multiple Removal Techniques: Past, Present and Future E-Lecture Recording | Eric Verschuur | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | eric verschuur offers a short version of his eet 1 tour, explaining how multiple reflections influence seismic measurements. an overview is provided of the techniques that were developed to remove them, from the (high-resolution) parabolic radon transform to the full 3d srme technique of today. he also discusses the extension to internal multiples and, finally, looks into the future, where multiples could be used as signal in imaging procedures. learn more about the eet programme. | |
| On Demand | Impact of Acquisition Geometry on AVO/AVOA Attributes Quality E-Lecture Recording | Amine Ourabah | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | with hydrocarbon exploration moving to more complex plays, understanding the resolution limits of seismic imaging and attributes is more important than ever, especially with the availability of new acquisition methods like iss® and dsss allowing acquisition of very high density surveys at a reduced cost. questions as: ‘what are the benefits of acquiring dense surveys, how do they impact the frequencies, avo/avao attributes’ can be difficult to answer and yet have a significant impact on cost, quality and decision making. attempts to answer some of these questions using the theory of resolution or synthetic modelling are available. however, we rarely have the opportunity to see the effect of decimating a real dataset on a full range of conventional and azimuthal attributes. in this study we are decimating the risha high density survey to 20 different geometries. each one of these geometries were then separately processed and an extensive list of pre-stack conventional and azimuthal attributes were extracted on them. by analysing and comparing these products, we attempt to answer the above questions, using the densest geometry as a benchmark for quality. | |
| On Demand | Seismic Screening for Hydrocarbon Prospects Using Rock-Physics Attributes E-Lecture Recording | Per Avseth | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | a methodology to create easy-to-implement rock-physics attributes that can be used to screen for reservoir sandstones and hydrocarbon pore fill from seismic inversion data is demonstrated. we have honored the physical properties of the rocks by defining attributes that complied with calibrated rock-physics models, including the fluid and rock impedances. we have demonstrated the use of these attributes on well log and seismic inversion data from the norwegian sea, and we successfully screened out reservoir rocks filled with either water or hydrocarbons. this video is part of eage online education programme. the european association of geoscientists and engineers (eage) is a global professional, non-profit association for geoscientists and engineers. eage strives to promote innovation and technical progress and aims to foster communication and cooperation between those working in, studying or interested in these fields. to learn more about eage education visit www.learninggeoscience.org the contents introduced in this e-lecture are part of a comprehensive course offered by per avseth via eage. consult our calendar of events to learn about the upcoming deliveries of request it for in-house training! | |
| On Demand | Quantitative 4D Analysis Using Business Analytics E-Lecture Recording | Mark Thompson | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in geophysical reservoir monitoring (grm) seismic data, reservoir data, production data, and borehole data must be integrated to get an understanding of what is going on in the reservoir over time. the information used in grm is a typical example of big data, as it can be characterized by volume, velocity, and variety. the learnings of big data from other industries have been leveraged and applied to quantitative analysis in grm. did you like this video? you can request a webinar with mark thompson to learn more | |
| On Demand | Multi-Azimuth Streamer Seismic in The Nile Delta: Depth Imaging E-Lecture Recording | Walter Rietveld | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | bp has been acquiring multi-azimuth (maz) streamer seismic in the nile delta since 2003. the initial results showed that maz data greatly improves general image quality, signal-to-noise ratio and lateral resolution, and suppresses diffracted multiples effectively. e-lecture part 1 discusses the reasons why maz was selected and discusses the first results after time processing and pstm imaging. e-lecture part 2 discusses the workflow that combines the maz data in a multi-parameter reflection tomography approach to build a detailed velocity model that shows variations which correspond very well to the geology interpreted from the seismic, and which yields improved psdm images. the results and learnings from both presentations are relevant and applicable to wide-azimuth acquisition and processing in general. | |
| On Demand | Geological Well Testing in Fractured Reservoirs E-Lecture Recording | Patrick Corbett | Geology | Geological Modeling | E-Lecture Recording | On Demand | On Demand | EAGE | in this contribution we consider synthetic well test responses generated through numerical simulation of a model derived from an outcrop-based fault/fracture geometry. we consider how the well might connect with the fractures to help understand relationships between the different fracture well test responses. | |
| On Demand | The Art of Science E-Lecture Recording | Roel Snieder | Training and Development | Soft Skills | E-Lecture Recording | On Demand | On Demand | EAGE | this video gives a brief overview of the eage course “the art of science.” this class gives general professional skills needed to be effective and successful in research. these skills include generating research questions, creating a work plan, scientific publishing, oral and written communication, time management and many other topics. | |
| On Demand | Seismic Anisotropy in Shaly Formations…Revisited E-Lecture Recording | Patrick N.J. Rasolofosaon | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | seismic anisotropy, that is to say the directional dependence of seismic velocity, is quite common in sedimentary formations and is often linked to the presence of shale. if not correctly taken into account it can strongly affect surface seismic data interpretation, seismic to well tie and azimuth versus offset analysis. from the analysis of two large databases of up to 800 ‘shaly’ samples in a broad sense, including shales but also mudshale, clayshale, siltstone, argillite, claystone, siltshale, mudstone, we demonstrate that seismic anisotropy in such formations is to a large extent determined by factors other than compaction processes, such as depositional environment, chemical composition of fluid, silt fraction, etc. furthermore, the alignment of the individual clay platelets, main constituents of shales, can explain most of the anisotropy measurements of the databases. assuming the elastic properties of the individual clay platelets, we propose simple plots for straightforwardly quantifying the legendre orientation distribution function coefficients and of the clay platelet alignment from the measurement of seismic anisotropy parameters. | |
| On Demand | Seismic Characterization of Shallow Gas in The Netherlands E-Lecture Recording | Mijke van den Boogaard | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | the cenozoic in the dutch offshore is known to host abundant shallow amplitude anomalies related to hydrocarbons. the netherlands is the first country in the north sea area in which shallow gas is developed and has proven to be a valuable resource. amongst 3 successfully producing fields and 5 additional proven accumulations, ebn has identified more than 150 leads from seismic data (bright spots). in terms of volumes several of those leads are expected to rank economically. the success of the producing fields, initial volumes, and the large availability of 3d seismic data has contributed to an increased interest from the industry. the work that is presented includes an overview of the shallow gas play in the northern dutch offshore and focuses on the seismic characterization system established to help selecting those bright spots that have highest potential for development. the main objectives are to de-risk the play and to improve the understanding of the relation between seismic anomalies and gas saturation. | |
| On Demand | Petrographic coded correlations in petrophysics Student E-Lecture Recording | Nina Gegenhuber | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | eage student e-lecture: petrographic coded correlations in petrophysics by nina gegenhuber petrophysics refers to the research on the physical properties of rocks, their experimental and theoretical derivation and their correlations. in this e-lecture the petrographic coded model concept will be explained and some examples of the first applications are shown. the first application of the model was to derive a correlation between thermal conductivity and compressional wave velocity. the model concept can help to understand various influencing factors for the different petrophysical properties and become a powerful tool for data interpretation. | |
| On Demand | In-Situ Local Angle Domain Sata as an Ideal Representation for Directivity Driven Imaging E-Lecture Recording | Zvi Koren | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture zvi koren presents a novel imaging system for enriching (maximizing) information from the available recorded seismic data. the system is based on two stage imaging process composed of: 1. mapping into the local angle domain (lad): internal optimal beam forming and in situ full wavefield mapping and decomposition (binning) of the 5d recorded seismic data into the subsurface 7d lad using a bottom-up ray-based migration operator. the resulted imaged dataset is organized and stored as 5d angle-domain common image gathers, where each depth point consists of two directional angles (apparent dip and azimuth) and two scattering angles (opening angle and opening azimuth). 2. lad-based conditioning and processing: mute, data reconstruction, q compensation lad-based imaging: ability to selectively enhance structural model continuity (specular energy imaging) and high resolution discontinuous objects: small faults and fracture systems (diffraction imaging) or near vertical walls (corner-waves imaging) directly from the 5d lad gathers it is shown that the method enhances the data components associated with the seismic modelling used for the migration (e.g. primary p-waves) and simultaneously attenuates all other data characteristics (“noise”; “multiples”) in both data and space-angle domains. | |
| On Demand | Quantitative Analysis of Schoonebeek SeisMovie Data E-Lecture Recording | Paul Zwartjes | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | a permanently installed seismovie™ system was deployed at schoonebeek oil field in the netherlands to monitor steam injection in one of the patterns. qualitatively, the 4d data has given us unprecedented insight into the lateral extent and temporal evolution of the steam front. we attempted to invert directly for steam thickness but the limited areal extent of the system (narrow swath) resulted in a sub-optimally imaged stack that did not match the synthetic data generated from the reservoir model (i.e., we could not “close-the-loop”). instead, we compared forward modelled data generated from a history matched reservoir model to 4d synthetic and observed time lapse seismic attributes and concluded that we see a slow vertical steam chest growth of approximately 1.7cm/day over a 7 month period. | |
| On Demand | Paleogeography and Stratigraphy E-Lecture Recording | Juan Tavella | Geology | Stratigraphy | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture juan tavella describes the main aspects of a case study for unconventional reservoir characterization of the upper jurassic shale in northern mexico. it is based on the workflow developed in the past three years to predict key properties to understand the behaviour of a source rock as a reservoir. it integrates well and seismic to provide attributes that in a exploratory scenario will help to outline high potential zones and to generate useful information to design drilling navigation and completion. | |
| On Demand | Seismic Surveillance for Reservoir Delivery "A Practitioner's Perspective" E-Lecture Recording | Olav Inge Barkved | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture olav barkved will share examples of value creation from 4d seismic and demonstrate how the technology can be taken a step further through the use of field-wide permanent installed seismic sensors. permanently installed systems for seismic surveillance offer frequent and high quality seismic time-lapse surveys to be used for active reservoir management, to support the drilling of infill wells, and to assist the production engineers in managing the wells. olav, currently with petoro and previously with bp norway, is sharing from his experience in managing and making the most out of a dedicated seismic surveillance system for reservoir delivery. | |
| On Demand | Accurate Modelling and Inversion With Structural Models Using The Finite-Difference Method E-Lecture Recording | James Hobro | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture james hobro (schlumberger gould research) describes a new approach to representing complex 3-d structural features (e.g. salt bodies) in gridded modelling and inversion applications. this approach removes the model parameter aliasing commonly present in gridded models and allows structural boundaries to be positioned to sub-cell accuracy. it can be linearized to enable inversion methods that operate on gridded models to update the shape parameters describing model structure directly. it is shown in synthetic modelling tests that this method significantly improves the accuracy of seismic data modelled using the finite-difference method in the presence of high-contrast structural features such as salt bodies. an application to full waveform inversion is also demonstrated using synthetic data, in which bulk shifts and fine structure are resolved in a complex top-salt gulf-of-mexico model. | |
| On Demand | Data-Driven Green's Function Retrieval from Reflection Data E-Lecture Recording | Kees Wapenaar | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | this e-lecture introduces new reflection imaging methodology, which deals with internal multiples. first, an iterative scheme retrieves focusing functions from reflection data at the surface, which focus onto virtual sources in the subsurface. next, the responses to these virtual sources, the green’s functions, follow from the focusing functions and the reflection data. once these green’s functions are obtained, reflection imaging can be carried out by which the primaries and internal multiples are mapped to their correct positions, with correct reflection amplitudes and without the occurrence of false images at wrong positions. | |
| On Demand | Passive Seismic Surface-Wave Interferometry for Reservoir-Scale Imaging E-Lecture Recording | Sjoerd de Ridder | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture sjoerd de ridder provides an introduction to passive seismic interferometry using surface waves with applications to reservoir geophysics. first, he addresses the nature of seismic noise typically recorded at low frequencies by marine seismic arrays. then, he explaines the basic principle of passive seismic interferometry and shows virtual seismic sources obtained by cross-correlating microseism noise. lastly, he demonstrates example applications of imaging anisotropy and time-lapse velocity changes using virtual seismic sources. | |
| On Demand | Notional ghosts E-Lecture Recording | Gary Hampson | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | in this e-lecture: gary hampson, principal research geophysicist at downunder geosolutions, will explain an extension to the airgun notional source concept called notional ghosts. these are conceptual devices that describe the source ghost in terms of virtual monopole sources each of which has its own signature. as with notional sources, although notional ghosts are never directly observed, they are derived by inversion of the pressure wavefield recorded by the near field hydrophones. in this lecture gary explains the motivation for this new concept, its theoretical basis and shows real examples. | |
| On Demand | 4D Inversion of Continuous Land Seismic Reservoir Monitoring of Thermal EOR E-Lecture Recording | Laurène Michou | Engineering | Petroleum Engineering | E-Lecture Recording | On Demand | On Demand | EAGE | laurene michou (cgg) presents 4d seismic inversion results from a continuous seismic monitoring survey of the schoonebeek reservoir produced by thermal eor. the 4d simultaneous stratigraphic inversion methodology was driven by the continuous nature of the monitoring. inversion results brought significant insight about steam distribution. | |
| On Demand | Resolving Near-Surface Velocity Anomalies in Marine Data E-Lecture Recording | Ian Jones | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | unresolved velocity anomalies in the near surface degrade deeper imaging. as a consequence, great care needs to be taken to ensure that all significant near-surface effects have been dealt with before attempting to build the deeper parts of a velocity-depth model. in order to incorporate velocity anomalies into the model, a range of options can be used, depending on whether the geobody geometry alone is discernible, or whether its velocity distribution is also known. here i describe current industrial practice for building complex near-surface models, which is based on a range of approximate techniques, as well as the more complete solution offered by the emerging technology of waveform inversion. although building complex near surface models is a painstaking process, a suitable near-surface velocity model can usually be obtained. | |
| On Demand | An Electromagnetic Survey Of A Gas Hydrate Vent Offshore Mid-Norway E-Lecture Recording | Andrei Swidinsky | Near Surface | Non-seismic Methods | E-Lecture Recording | On Demand | On Demand | EAGE | andrei swidinsky describes a transient electromagnetic survey to image the resistivity structure of the hydrate vent cne03, offshore mid-norway (located approximately 10 km north of the storegga slide sidewall). the experiment is unique in that the electric dipole transmitter has two polarizations for each transmission station. furthermore, the newly designed transmitter is deployed in a pogo-style acquisition, which is suitable for a detailed investigation of a small scale seafloor target. the geometry of the experiment makes conventional interpretation methods difficult so that we simplify the data by creating a single rotationally invariant quantity from the original four electric field measurements (two electric field measurements for two transmitter polarizations). this invariant is further reduced to an apparent resistivity, which is useful for rapid resistivity mapping of the seafloor. results show that cne03 is characterized by increased apparent resistivities which correlate well with increased p-wave velocities determined from ocean bottom seismometer measurements. | |
| On Demand | Water Velocity and Tide Measurement in Marine Seismic Acquisition E-Lecture Recording | Kanglin Wang | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | kanglin wang (shell) discusses how to improve time-lapse (4d) seismic with novel water statics processing involving a seafloor device called pies. a well known challenge in marine 4d processing is the non-repeatability introduced by water velocity and tidal variations during a survey and between different surveys. pies provides direct measurement and continuous monitoring of these water properties and greatly reduces the uncertainties in timing and positioning of seismic data. | |
| On Demand | Distributed Acoustic Sensing Cable for Surface Seismic E-Lecture Recording | Kees Hornman | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | distributed acoustic sensing (das) is a relatively novel technology, which uses a fibre-optic cable as sensor. advantages are that the cable is passive, it does not have separate detectors and the channel spacing can be set by the instrument. das has already found applications in monitoring of hydraulic fracturing and vsps. a downside is that a straight fibre has no broadside sensitivity and can therefore not be used for reflection seismic with horizontal cables. a helically wound cable (hwc) solves that problem; the video describes a field trial, which confirms the theoretically expected isotropic sensitivity of the hwc for p-waves. | |
| On Demand | Wave Equation Receiver Deghosting E-Lecture Recording | Craig Beasley | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | current solutions to receiver deghosting of marine seismic data generally involve making complementary measurements of the wavefield or, alternatively, involve estimation of data not recorded due to ghost interference. in this talk, we introduce a new approach that rigorously deghosts single measurement data (p-wave only, for example) without relying on estimation of missing data, which was previously thought to be mathematically impossible. we use the wave equation to compute directly the up and downgoing wavefields between the receiver and the surface. this migration-like approach is possible given that the upcoming wavefield is causal with respect to the downgoing wavefield, a good assumption if certain types of noise such as the direct arrivals are removed from the recorded wavefield. moreover, our method exposes the underlying physics of the problem and thereby naturally allows for complexities such as variable water velocity, sea surface, complex surface reflection conditions and arbitrary receiver configurations. | |
| On Demand | Dip Correction for Convolutional Modelling and Elastic Inversion E-Lecture Recording | Adam Cherrett | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | convolutional seismic modelling is a very convenient and fast technique, widely used in geoscience. it is usually applied in the vertical dimension only, which is one of its shortcomings, leading to inaccurate modelling and restricting its applications. this talk concerns a simple pseudo-3d extension to the convolutional model which improves modelling of dipping events and the lateral resolution of seismic data. this same 3d operator, when used to invert images for elastic properties, can reduce artefacts and improve resolution. | |
| On Demand | Satellite InSAR Data Reservoir Monitoring From Space E-Lecture Recording | Alessandro Ferretti | Engineering | Petroleum Engineering | E-Lecture Recording | On Demand | On Demand | EAGE | satellite radar data for surface deformation monitoring are gaining increasing attention. they provide a powerful tool for remotely measuring small surface displacements that can be applied successfully to many different applications, spanning from sinkhole detection to reservoir optimization. this course provides a step-by-step introduction to satellite radar sensors, sar imagery, sar interferometry and advanced insar techniques. rather than a tutorial for remote sensing specialists, the course starts from very basic concepts and explain in plain language the most important ideas related to sar data processing and why geoscientists and engineers should take a vested interest in this new information source. | |
| On Demand | Pseudo-Elastic Impedance - A Norwegian Sea Demonstration E-Lecture Recording | Per Avseth | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | in recent years, elastic inversion and quantitative interpretation of pre-stack seismic data have become standard procedures in the petroleum industry. in this presentation, per avseth (norwegian university of science and technology) compares extended elastic impedance trends at different chi angles, with rock physics template models. he demonstrates that the elastic impedance attribute does not always comply with the complexity and non-linearity of rock physics models related to geological processes. he also shows how one can honour the non-linearity of a rock physics model and create pseudo-elastic impedance as a function of deviation away from a curved water-wet rock physics model itself (cpei). finally, per demonstrates the use of this approach on seismic inversion data from a selected area in the mid norwegian sea, by mapping of lithology and fluid anomalies that are consistent with rigorous rock physics models. this video is part of eage online education programme. the european association of geoscientists and engineers (eage) is a global professional, non-profit association for geoscientists and engineers. eage strives to promote innovation and technical progress and aims to foster communication and cooperation between those working in, studying or interested in these fields. to learn more about eage education visit www.learninggeoscience.org per avseth is the instructor in a short course and a webinar offered via eage. consult our calendar of events to learn about the upcoming deliveries of request it for in-house training! | |
| On Demand | High Resolution 3D Tunnel Seismic Reflection at Olkiluoto, Finland E-Lecture Recording | Calin Cosma | Geophysics | Seismic Acquisition | E-Lecture Recording | On Demand | On Demand | EAGE | calin cosma (vibrometic) describes the high-resolution seismic techniques, used for rock characterization ahead and around the access tunnel of the spent nuclear fuel disposal facility, currently being built at olkiluoto, finland. long fractures and deformation zones were identified and mapped up to hundreds of meters from the tunnel. the methodological novelty has been the introduction of the 3d image point migration, which proved to be very effective for the imaging of low-aperture rock features with various orientations. the results are compared with the current site model and observations in tunnels and boreholes. | |
| On Demand | Volume Based Modeling: Automated Construction of Complex Structural Models E-Lecture Recording | Laurent Souche | Geology | Geological Modeling | E-Lecture Recording | On Demand | On Demand | EAGE | laurent souche (schlumberger) exposes the latest advances in structural modeling. after discussing the conceptual differences between surface-based and volume-based approaches for building 3d faulted structural models of the subsurface, the key algorithms underlying the volume-based technology are described. the main geological and geometrical constraints controlling the interpolation of a 3d attribute representing the relative geological age of the formations are also detailed. finally, advantages of volume-based methods are illustrated using synthetic examples, physical sandbox models and real field data. | |
| On Demand | Seismic 4D Inversion for Quantitative Use in Automated History Matching E-Lecture Recording | Milana Ayzenberg | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | milana ayzenberg (statoil) discusses the different aspects of using 4d seismic for conditioning reservoir models. assisted history matching is employed to match the reservoir production history and the 4d seismic inversion data simultaneously. the three building bricks of a conditioning workflow are the forward modelling from the reservoir model to the inverted 4d seismic attributes; the quantitative seismic inversion; and the history matching which closes the dynamic conditioning loop. milana discusses in detail these three components, with a particular focus on the quantitative aspects and uncertainties in a 4d inversion. the conditioning workflow is demonstrated on a north sea field which exhibits a complex 4d signal. the seismic data is inverted to 4d changes in elastic parameters. this data is further used for conditioning the reservoir model on equal footing with production and pressure data. | |
| On Demand | Least Squares Reverse Time Migration E-Lecture Recording | Bin Wang | Geophysics | Seismic Processing | E-Lecture Recording | On Demand | On Demand | EAGE | bin wang (tgs) briefly introduces a new imaging algorithm called least squares rtm (lsrtm). lsrtm is an inversion-based imaging algorithm, which aims to derive a better reflectivity image. similar to full waveform inversion, lsrtm is trying to minimize the data residual between a field-recorded seismogram and a synthetic modeled seismogram. like reverse time migration (rtm), lsrtm is based on the two-way wave equation. compared to a regular rtm, lsrtm has the following benefits: 1) it gives a high-resolution and broadband seismic image, especially the low frequency end; 2) it reduces migration artifacts due to acquisition foot print and non-uniform illumination; 3) the migration image has more balanced amplitudes, as lsrtm is towards true amplitude imaging. | |
| On Demand | Rock Physics and Seismic Reservoir Prediction Contrained by Depositional and Burial Trends E-Lecture Recording | Per Avseth | Reservoir Characterization | Rock Physics | E-Lecture Recording | On Demand | On Demand | EAGE | in this compact version of his distinguished lecture programme presentation, per avseth (norwegian university of science and technology) discusses rock physics and seismic reservoir prediction constrained by depositional and burial trends. outline: 1. rock physics background and motivation 2. using compactional depth trends to improve lithology and fluid classification from avo -- a demonstration from the alvheim field, north sea. 3. how burial history and associated variation in rock stiffness affects 4-d time shifts -- an example from the troll east field, north sea. this video is part of eage online education programme. the european association of geoscientists and engineers (eage) is a global professional, non-profit association for geoscientists and engineers. eage strives to promote innovation and technical progress and aims to foster communication and cooperation between those working in, studying or interested in these fields. to learn more about eage education visit www.learninggeoscience.org per avseth is the instructor of a short course and a webinar offered via eage. consult our calendar of events to learn about the next deliveries or request one! | |
| On Demand | Seismic Geomechanics E-Lecture Recording | Jorg Herwanger | Reservoir Characterization | Geomechanics | E-Lecture Recording | On Demand | On Demand | EAGE | in this compact version of his eage education tour (eet 5), jörg herwanger (ikon science, previously schlumberger) discusses the process of building and calibrating geomechanical models using 3d and 4d seismic data. he analyzes the three main uses that seismic data provide in building geomechanical models: horizon and fault interpretation for building structural models, avo inversion and rock physics models for creating mechanical property models, and for model calibration. herwanger elaborates on these three points in two case studies. the first case study presents a 3d exploration geomechanical model. the second study presents a 4d geomechanical model used for field development planning. the accompanying book is available in the eage bookshop: http://bookshop.eage.org/webshop/prod... this video is part of eage online education programme. the european association of geoscientists and engineers (eage) is a global professional, non-profit association for geoscientists and engineers. eage strives to promote innovation and technical progress and aims to foster communication and cooperation between those working in, studying or interested in these fields. to learn more about eage education visit www.learninggeoscience.org | |
| On Demand | How to Submit a Good Abstract - Part 1 How-to-Video Recording | Aart-Jan van Wijngaarden | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to submit a good abstract - part 1 are you planning to submit an abstract for the eage annual or an upcoming scientific conference? we have a new series of how-to videos focusing exactly on this! eage experts including the eage technical programme officer aart-jan van wijngaarden (equinor) shared their tips on what to avoid and things to remember when preparing an abstract for your next presentation. | |
| On Demand | How to Submit a Good Abstract - Part 2 How-to-Video Recording | Milos Cvetkovic | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to submit a good abstract - part 2 are you planning to submit an abstract for the eage annual or an upcoming scientific conference? we have a new series of how-to videos focusing exactly on this! eage experts including eage technical programme reviewer milos cvetkovic (spectrum geo) shared their tips on what to avoid and things to remember when preparing an abstract for your next presentation. | |
| On Demand | How to Submit a Good Abstract - Part 3 How-to-Video Recording | Maartje Houben | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to submit a good abstract - part 2 are you planning to submit an abstract for the eage annual or an upcoming scientific conference? we have a new series of how-to videos focusing exactly on this! eage experts including eage technical programme reviewer maartje houben (utrecht university) shared their tips on what to avoid and things to remember when preparing an abstract for your next presentation. | |
| On Demand | How to Present to a Live Audience - Preparation How-to-Video Recording | Ivan Vasconcelos | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to present to a live audience - preparation six seasoned presenters, including eage technical programme reviewer ivan vasconcelos (utrecht university) share their experience and advice on preparing presentations, on how to capture and how to keep the audience’s attention and on what they have learned over the years. the videos address very practical questions and different situations, so whatever your concern, the answer is here. | |
| On Demand | How to Present to a Live Audience - Non-Verbal Communication How-to-Video Recording | Caroline Lowrey | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to present to a live audience - non verbal communication six seasoned presenters, including eage technical programme reviewer caroline lowrey (spirit energy norway) share their experience and advice on preparing presentations, on how to capture and how to keep the audience’s attention and on what they have learned over the years. the videos address very practical questions and different situations, so whatever your concern, the answer is here. | |
| On Demand | How to Present to a Live Audience - The Story, Part 1 How-to-Video Recording | Giles Watts | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to present to a live audience - the story, part 1 six seasoned presenters, including eage technical programme reviewer giles watts (watts geoscience consulting) share their experience and advice on preparing presentations, on how to capture and how to keep the audience’s attention and on what they have learned over the years. the videos address very practical questions and different situations, so whatever your concern, the answer is here. | |
| On Demand | How to Present to a Live Audience - The Story, Part 2 How-to-Video Recording | Esther Bloem | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to present to a live audience - the story, part 2 six seasoned presenters, including eage technical programme reviewer esther bloem (nibio – norwegian institute of bioeconomy research) share their experience and advice on preparing presentations, on how to capture and how to keep the audience’s attention and on what they have learned over the years. the videos address very practical questions and different situations, so whatever your concern, the answer is here. | |
| On Demand | How to Present to a Live Audience - Interaction with the Audience, Part 1 How-to-Video Recording | Victor Aarre | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to present to a live audience - interaction with the audience, part 1 six seasoned presenters, including eage technical programme reviewer victor aarre (schlumberger) share their experience and advice on preparing presentations, on how to capture and how to keep the audience’s attention and on what they have learned over the years. the videos address very practical questions and different situations, so whatever your concern, the answer is here. | |
| On Demand | How to Present to a Live Audience - Interaction with the Audience, Part 2 How-to-Video Recording | John Brittan | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to present to a live audience - interaction with the audience, part 2 six seasoned presenters, including eage technical programme reviewer john brittan (ion) share their experience and advice on preparing presentations, on how to capture and how to keep the audience’s attention and on what they have learned over the years. the videos address very practical questions and different situations, so whatever your concern, the answer is here. | |
| On Demand | How to Chair - Part 1: The Role of the Chairperson How-to-Video Recording | Aart-Jan van Wijngaarden, Ivan Vasconcelos, John Brittan, Pierre-Olivier Lys, Paul Zwartjes and Roald van Borselen | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to chair a session – the role of the chairperson another important element contributing to the success of a presentation, as well as to a productive scientific exchange, is good chairing. in this series we explore the role of the chairperson with advice from experienced chairs, including eage technical programme officer aart-jan van wijngaarden (equinor) and technical programme reviewers ivan vasconcelos (utrecht university), john brittan (ion), pierre-olivier lys (total), paul zwartjes (aramco overseas company) and roald van borselen (aramco overseas company). | |
| On Demand | How to Chair - Part 2: Keeping Time How-to-Video Recording | Aart-Jan van Wijngaarden, Ivan Vasconcelos, John Brittan, Pierre-Olivier Lys, Paul Zwartjes and Roald van Borselen | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to chair a session – keeping time another important element contributing to the success of a presentation, as well as to a productive scientific exchange, is good chairing. in this series we explore the role of the chairperson with advice from experienced chairs, including eage technical programme officer aart-jan van wijngaarden (equinor) and technical programme reviewers ivan vasconcelos (utrecht university), john brittan (ion), pierre-olivier lys (total), paul zwartjes (aramco overseas company) and roald van borselen (aramco overseas company). | |
| On Demand | How to Chair - Part 3: Creating an Engaging Session How-to-Video Recording | Aart-Jan van Wijngaarden, Ivan Vasconcelos, John Brittan, Pierre-Olivier Lys, Paul Zwartjes and Roald van Borselen | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to chair a session – creating an engaging session another important element contributing to the success of a presentation, as well as to a productive scientific exchange, is good chairing. in this series we explore the role of the chairperson with advice from experienced chairs, including eage technical programme officer aart-jan van wijngaarden (equinor) and technical programme reviewers ivan vasconcelos (utrecht university), john brittan (ion), pierre-olivier lys (total), paul zwartjes (aramco overseas company) and roald van borselen (aramco overseas company). | |
| On Demand | How to Chair - Part 4: Tips and Tricks for Problems during a Session How-to-Video Recording | Aart-Jan van Wijngaarden, Ivan Vasconcelos, John Brittan, Pierre-Olivier Lys, Paul Zwartjes and Roald van Borselen | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to chair a session – tips and tricks for problems during a session another important element contributing to the success of a presentation, as well as to a productive scientific exchange, is good chairing. in this series we explore the role of the chairperson with advice from experienced chairs, including eage technical programme officer aart-jan van wijngaarden (equinor) and technical programme reviewers ivan vasconcelos (utrecht university), john brittan (ion), pierre-olivier lys (total), paul zwartjes (aramco overseas company) and roald van borselen (aramco overseas company). | |
| On Demand | How to Get Published - Part 1 How-to-Video Recording | Malcolm Francis | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to get published - part 1 are you considering publishing your paper in a scientific journal? are you looking for advice to enhance the quality of your research work and increase the chance to get your paper accepted? eage can help you on your way preparing that paper. in this series, two expert reviewers including malcolm francis (schlumberger) reveals their recipe for successfully published papers, including practical experience in the selection of appropriate journals for your subject of study, tips on academic research writing, the importance and role of co-authors, together with the dos and don’ts when submitting your paper and the proper reactions to a negative decision. | |
| On Demand | How to Get Published - Part 2 How-to-Video Recording | Gareth Williams | Training and Development | Soft Skills | How-to-Video Recording | On Demand | On Demand | EAGE | how to get published - part 2 are you considering publishing your paper in a scientific journal? are you looking for advice to enhance the quality of your research work and increase the chance to get your paper accepted? eage can help you on your way preparing that paper. in this series, two expert reviewers including gareth williams reveals their recipe for successfully published papers, including practical experience in the selection of appropriate journals for your subject of study, tips on academic research writing, the importance and role of co-authors, together with the dos and don’ts when submitting your paper and the proper reactions to a negative decision. |
