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Education

Education Calendar

Education

Education Calendar

DatesCourse TitleInstructorCategorySubcategoryRegistration
000003 May — 3 Jul 2022Geological CO2 Storage
An EAGE Extensive Online Course
A. Busch, E. Mackay, F. Doster, M. Landro, P. RingroseEnergy TransitionEnergy TransitionExtensive Online Course2022MayEAGE
0000126 May 2022DLP Webinar on AI Seismic Interpretation of vintage seismic data with implications for CCS site characterisation
Distinguished Lecturer Webinar
Dr Ryan WilliamsDistinguished Lecturer Webinar2022MayEAGE
0000230 May — 2 Jun 2022Upscaling and artificial intelligence based proxies for uncertainty assessment of reservoir production
Interactive Online Short Course
Dr Dominique GuerillotEngineeringReservoir ManagementInteractive Online Short Course2022MayEAGE
000031–2 Jun 2022Seismic Reservoir Characterization: An Earth Modeling Perspective
Interactive Online Short Course
Dr Philippe DoyenGeophysicsSeismic Reservoir CharacterizationInteractive Online Short Course2022JuneEAGEgeophysics reservoir characterization seismic reservoir characterization: an earth modeling perspective carbonates geostatistics integration interpolation interpretation inversion lithology rock physics sediment instructor: dr philippe doyen (independent consultant, london, united kingdom) three-dimensional numerical earth models play an increasingly important role in the petroleum industry to improve reservoir management and optimize hydrocarbon recovery. a key challenge for reservoir geoscientists is the quantitative integration of 3d and 4d seismic 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 for constraining earth models with seismic information and quantifying subsurface uncertainty. the course objectives of the course are to: • provide a practical introduction to techniques and workflows combining geostatistics and rock physics for the construction of seismic-constrained earth models; • explain how to integrate quantitatively seismic and well data in earth modelling workflows and evaluate the associated geo-model uncertainty; • describe the assumptions and technical limitations of current seismic-based geo-modeling techniques, thus helping reduce the black-box application of software tools; • highlight the technical challenges and the road ahead for quantitative seismic interpretation. the two-days course is divided into 7 modules, which provide an overview of basic concepts and their application to a number of case study examples involving both clastic, carbonate and unconventional reservoirs. • module 1 introduction to geostatistics and earth modelling from seismic data. • module 2 geostatistical interpolation techniques for seismic-guided 3-d earth models. • module 3 stochastic simulation with seismic constraints. • module 4 seismic lithology and fluid prediction using statistical techniques. • module 5 stochastic inversion. • module 6 statistical rock physics. • module 7 simulator-to-seismic workflow using 4-d earth models. the course is aimed at geoscientists and engineers who are involved in the construction of earth models and who wish to learn about practical techniques for seismic data integration, combined use of seismic rock physics and geostatistics, uncertainty modeling and quantitative 4d interpretation. the course comes at a time when seismic-based earth modeling has become a key activity for integrated asset teams in the e&p industry. it should therefore be of interest to 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 is desirable. basic knowledge of seismic inversion techniques ad geostatistics is desirable philippe doyen, formerly vp r&d for the geoconsulting business line of cgg, is now working as an independent consultant with worldwide responsibility for technology development in reservoir characterization. prior to joining cgg in 2003, philippe was research director for schlumberger information solutions (sis). he has also worked for more than 10 years with western geophysical / western atlas where he was r&d manager for reservoir geophysics. philippe holds ms and phd degrees in geophysics from stanford university. he also holds a mining engineering degree (1st class) from the university of louvain, belgium. philippe has been an adjunct professor at the university of bergen, norway, from 2006 to 2012. he was also part-time geophysics professor in the mining engineering department of the university of louvain from 1989 to 1992. philippe has over 25 years r&d, consulting and teaching experience in seismic reservoir characterization, geostatistics, geological modelling and rock physics. he has developed several patented methods for multi data integration and uncertainty quantification in reservoir modelling.
0000410–13 Jun 2022Fundamentals of Petroleum Reserves under PRMS 2018
Interactive Online Short Course
Victor Alexei Huerta QuinonesEngineeringReservoir ManagementInteractive Online Short Course2022JuneEAGE
0000514–17 Jun 2022Full-Waveform Inversion for High-Resolution Reservoir Characterization
Interactive Online Short Course
Prof. Dr Dries GisolfGeophysicsSurface ImagingInteractive Online Short Course2022JuneEAGEgeophysics surface imaging full-waveform inversion for high-resolution reservoir characterization avo elasticity fourier interpretation kirchhoff radon transform reflection scattering wave equation wavelet instructor: prof. dr dries gisolf (delft inversion, delft, netherlands) the purpose of this course is to teach participants the fundamentals of extracting quantitative property information from seismic data. in the end this leads to an inversion process, which is called linear if the data are supposed to consist in primaries only and is non-linear if all multiple scattering and multiple mode conversion over a target interval (typically 500 m around the reservoir) is taken into account. non-linear inversion leads to a higher resolution than obtained from conventional linear inversion techniques. all steps required in these processes are based on wave equations and it is important, therefore, to have a good understanding of acoustic and elastic wave equations. in linear (avo) inversion, first the reflection coefficients are derived from the data and subsequently the rock properties are derived from the reflection coefficients. in non-linear inversion, the properties are directly derived from the data. non-linear inversion is an iterative process of which the first iteration (the born approximation) represents the linear inversion result. the method is based on an integral representation of the wave equation. an important aspect of reservoir oriented full-waveform inversion (fwi-res) is that the surface recorded data are localized (focused) to the target area. this can be achieved by redatuming or by local demigration of migrated data. both the linear avo data model in terms of reflection coefficients and the non-linear data model in terms of property contrasts against backgrounds are presented. inversion, linear, or non-linear, requires regularization. several regularization options are presented. finally, linear and non-linear inversions at the reservoir scale are demonstrated by highly realistic synthetic reservoir models and real data case studies. the real data case studies include the extraction of low-frequency models (backgrounds) from well data and the extraction of angle dependent wavelets from the seismic-to-well match. upon completion of the course, participants will be able to: • understand what quantitative property information is contained in seismic data and how to extract it. • make better judgements as to what inversion method to apply to what problem. • adopt a more quantitative approach to seismic-to-well matching and low frequency background model extraction • further the role of reservoir geophysics in multidisciplinary projects. • introduction • short recap on complex integral transforms (fourier, laplace, f/k and linear radon) • the acoustic wave equation in inhomogeneous media • integral representations of the acoustic wave equation; kirchhoff-rayleigh and the scattering integral (lippmann-schwinger) • the avo data model; zoeppritz reflection coefficients • linear inversion of avo data including regularisation; synthetic and real data examples • the non-linear data model for inversion; data equation and object equation; iterative, multiplicatively regularised inversion • applications based on an elastic full wavefield non-linear data model; realistic synthetic reservoir study, real data case studies including low- frequency model extraction and seismic-to-well matching. synthetic time-lapse example. this course is designed for geophysicists active in reservoirs and/or quantitative interpretation and processing geophysicists who would like to become involved in quantitative interpretation. participants should have a basic training in geophysics and mathematics, particularly complex numbers and integrals. prof. dr dries gisolf graduated from the delft university of technology in 1971 and obtained his phd at the university of utrecht in 1975. in 1976 he joined shell international research co. in rijswijk, the netherlands, as a seismic data processing geophysicist. between 1980-2000 he held various positions for shell in oman, the netherlands, australia, malaysia and nigeria. throughout his career with shell he was involved in acquisition, processing and interpretation of seismic data, with an emphasis on quantitative prediction of reservoir properties. in september 2000 he was nominated as professor of acoustical imaging and sound control at the faculty of applied sciences at the delft university of technology. after retiring from tu delft in 2010, he co-founded delft inversion in 2012, a service company providing high-resolution reservoir oriented inversion services to the oil and gas industry.
0000614–17 Jun 2022Borehole Seismic Fundamentals and Introduction to Advanced Techniques
Interactive Online Short Course
Mr Allan CampbellGeophysicsSeismic ProcessingInteractive Online Short Course2022JuneEAGEgeophysics seismic processing borehole seismic fundamentals and introduction to advanced techniques 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 instructor: mr allan campbell (vsp consultants llc) this course has 6 sections. the course moves from giving a basic understanding of the most common surveys towards the newest techniques being developed to solve modern problems. 1. introduction to vertical seismic profiling the vsp techniques used in industry are introduced. basics of wireline acquisition, and an introduction to fiber based acquisition are covered. this section gives a brief overview of the value of all the commonly used borehole seismic techniques, from checkshot through to 3d vsp. 2. the basics checkshot (velocity survey) and zero-offset vsps are widely used, are simple to acquire and process, and have huge value. this section will describe acquisition, processing and interpretation of these basic, but possibly the most important, surveys. 3. 2d and 3d imaging this section will focus on designing and interpreting walkaway vsp and 3d vsp surveys. down-hole receivers create the opportunity for higher resolution images than surface seismic can provide, and can provide images in poor seismic imaging areas, or images where surface access is difficult. advanced processing techniques will be discussed. specifics of survey planning and acquisition will be covered. 4. anisotropy and more the anisotropy module will focus on extracting vti and hti anisotropy parameters from walkaway vsp and 3d vsp surveys. seismic may be improperly imaged due to poor anisotropy assumptions. stress and fracturing information may be deduced from seismic and validated with vsp. having receivers down-hole and sources at the surface creates an ideal opportunity to measure anisotropy in-situ. ground truth measurement of avo can be made with receivers downhole, this section describes the various vsp avo techniques in common use. downhole arrays are also ideal for locating multiple generators and measuring q which we cover in this section. 5. reservoir monitoring and reservoir properties this section focuses on time-lapse 3d vsp, which can observe reservoir changes with a greater precision than is possible with surface seismic. there is an overview of fracture detection and orientation with vsps. elastic fwi is being developed to measure the reservoir's elastic properties, and will be briefly covered. a discussion on very high resolution imaging and tomography with crosswell seismic finishes the module. 6. advanced acquisition technology 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 is an emerging technology which enables efficient, fit-for-purpose vsp surveys with cost benefits over traditional wireline technology. upon completion of the course, participants will know the basics of acquiring and processing borehole seismic data. they will also be familiar with the latest borehole seismic techniques in: •high resolution imaging using 2d and 3d vsp surveys; •anisotropy determination and fracture analysis; •reservoir monitoring using time lapse vsp and crosswell seismic; •alternative acquisition schemes such as swd and das. participants will have a better understanding of the role of borehole seismic techniques in hydrocarbon exploration and production. they will be able to more knowledgeably participate in the design, planning and execution of advanced surveys and be comfortable with the interpretation 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 vsp b. zero offset vsp 3. vsp imaging: 2d and 3d techniques (2 hrs) a. survey design and modeling b. processing - model building, tomography, imaging techniques (kirchhoff, rtm) c. 2d imaging - offset vsp, walkaway vsp d. 3d imaging 4. anisotropy and more (3 hrs) a. measuring anisotropy with walkaway and 3d vsps -vti and hti, fractures b. avo analysis c. techniques to locate multiple generators with vsp data d. q estimation and q compensation with vsp data 5. reservoir monitoring and reservoir properties (1.5 hrs) a. time lapse 3d vsp for reservoir monitoring b. elastic fwi (vsp inversion) 6. advanced acquisition (1.5hrs) a. seismic while drilling b. distributed acoustic sensing timing of sections may change. the course is targeted toward those who have a basic understanding of surface seismic acquisition and processing, but only limited knowledge of borehole seismic. the course is designed to help participants identify borehole seismic solutions to common seismic interpretation problems. it is also be useful for those geophysicists needing higher resolution images than surface seismic can provide, and those geophysicists who need to validate seismic processing parameters and imaging models using borehole seismic. lastly, the course is relevant for geophysicists wanting to learn how to use borehole seismic as a cost-effective reservoir monitoring tool. participants are assumed to have knowledge of seismic response to earth reflectivity. participants should be aware of common well logging services. allan campbell graduated in 1984 from the northern alberta institute of technology in edmonton with a diploma in earth resources technology and, after a spell in dresser atlas, graduated in 1990 from the university of calgary with a bsc., majoring in geophysics. in 1990, he started his 25-year career at schlumberger in calgary. skills were developed in borehole seismic processing starting from basic check-shots up to the most complex 3d vsps. in 1997, he moved to houston texas, to open a new borehole seismic processing center. the center rapidly evolved into a global center of excellence for vsp processing. campbell helped schlumberger fully develop 3d vsp processing capabilities. 2010 to 2015 saw the development of many innovative techniques. the integration of borehole seismic data into the processing of surface seismic, to improve the resolution and depth control in seismic images, was finally realized. vsp is now routinely used to detect and characterize fractures, to estimation of the elastic properties of rocks, and to monitor the changes in reservoirs due to both enhanced recovery methods and storage of co2. from 2016 to the present, campbell has been working as a geophysical consultant with vsp consultants llc. projects have included work for major operators and service companies, supervising vsp processing projects. interesting work is also being done on drill bit seismic in hard rock mining environments. vsp consultants is also offering borehole seismic training courses to the oil and gas industry.
0000715–16 Jun 2022An Introduction to Offshore Wind
Interactive Online Short Course
Jeroen GodtschalkEnergy TransitionInteractive Online Short Course2022JuneEAGE
0000817 Jun 2022DLP 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 EaidDistinguished Lecturer Webinar2022JuneEAGE
0000920 Jun 2022DLP Webinar on GeoChron-Based Restoration Workflow Applied to Clyde Seismic Dataset
Distinguished Lecturer Webinar
Dr. Anne-Laure TertoisDistinguished Lecturer Webinar2022JuneEAGE
0001021–23 Jun 2022Seismic Diffraction – Modeling, Imaging and Applications
Interactive Online Short Course
Tijmen Jan MoserGeophysicsIntegrated GeophysicsInteractive Online Short Course2022JuneEAGEgeophysics surface imaging seismic diffraction – modeling, imaging and applications carbonates diffraction discontinuities fluid-escape features focusing fractures imaging injectites interpretation time-lapse unconventional instructors: prof. evgeny landa (tel aviv university, israel) and dr tijmen jan moser (moser geophysical services, netherlands) diffraction phenomena have been identified as the key seismic manifestation of fractures and other small-scale reservoir heterogeneities. this two-day course will present the current state-of-the-art of diffraction technology and put this in context by a review of its past developments. the course will cover both forward diffraction modeling and diffraction imaging. case studies of diffraction imaging will be presented covering applications in seismic exploration and other areas of geoscientific interest. the course will be clearly structured in topics and subtopics. at the end of each topic, a number of bullet points will summarize the items meant to be memorized and taken home by the learner. interaction between the teacher and learner will be encouraged. the course material will be enlightened by out-of-the box examples demonstrating diffraction phenomena that support the techniques. by the end of this course, the learner will: • have a detailed and up-to-date understanding of the physics of diffraction, diffraction modeling and imaging; • be able to effectively communicate the key aspects of diffraction technology with other professionals; • have a good understanding of the added value that seismic diffraction brings to current exploration and production projects. 1. introduction o motivation, basic ideas and concepts o reflection versus diffraction o applications of diffraction analysis and imaging o interpretation value 2. history o discovery and founding years (1650-1820): grimaldi, huygens, newton, young, fresnel, poisson, arago o scalar diffraction: mathematical foundation 19th century: green, helmholtz, kirchhoff, sommerfeld o towards geometrical theory of diffraction early 20th century: maggi, rubinowicz, keller o towards modern theory: trorey, klem-musatov 3. diffraction modeling o motivation, definitions, objectives o physical modeling o numerical modeling: integral methods, boundary layer methods, surface and caustic diffraction, finite differences, time-lapse, scattering methods o case study: diffraction analysis on ground penetrating radar data o case study: diffraction response of salt diapirs 4. diffraction imaging in the time domain o motivation, definitions, objectives o anatomy of diffraction o diffraction and standard processing o detection of diffracted waves o separation of diffracted waves o inversion of diffracted waves o imaging o common reflection surface/multifocusing o focusing and velocity estimation o fracture detection 5. diffraction imaging in the depth domain o motivation o velocity model considerations o illumination: edge and tip diffraction imaging o depth imaging: general principles o resolution and super-resolution o image processing and diffraction imaging o diffraction imaging by specularity suppression o applications: sandstone reservoirs, time-lapse, stratigraphic terminations against salt, carbonate reservoirs, shale resource plays, unconventional reservoirs o case studies the target audience of the course consists in geoscientists from industry and academia with a basic knowledge of seismic processing and an interest in innovative interpretation technologies. prerequisites are a basic knowledge of seismic processing and imaging and a very elementary mathematical background. evgeny landa obtained his msc degree in geophysics at novosibirsk university (1972) and phd degree in geophysics at tel aviv university (1986). he started his carrier in the former soviet union, novosibirsk as a researcher, and senior geophysicist at the siberian geophysical expedition. after immigrating to israel, he worked at the geophysical institute of israel as a researcher, head of the r&d group and head of the seismic department (1981—2002), and director of opera (applied geophysical research group) in pau (france) (2002-2014) where he was involved in different aspects of seismic data processing, velocity model building and time and depth imaging. his work on velocity model building by coherency inversion has had a strong impact on today’s seismic depth imaging workflows and forms an important part of the geodepth (paradigm) software package. recently, his research interest involves using non-reflecting energy for increasing seismic resolution and imaging without precise velocity information. he has published more than 60 papers in international journals and his book ‘beyond conventional seismic imaging’. he is a member of eage and seg, from which he received the awards of best paper (seg, honorary mentioned, 2005) and the eage eotvos award (2007 and 2009). tijmen jan moser has a phd from utrecht university and has worked as a geophysical consultant for a number of companies and institutes (amoco, institut français du pétrole, karlsruhe university, bergen university, statoil/hydro, geophysical institute of israel, fugro-jason, horizon energy partners). for the last few years he has been working independently with associations with zterra, sgs-horizon and others. he is based in the hague, the netherlands. his main interests include seismic imaging, asymptotic methods, seismic reservoir characterization, diffraction and geothermal exploration. he has authored many influential papers on ray theory and ray methods, born inversion and modeling, macro-model independent imaging, and diffraction imaging, several of which have received best paper awards (seg, 2005 honorary mention, eage 2007 and 2009, eotvos award). he is editor-in-chief of geophysical prospecting and is serving on seg's publication committee and eage's oil gas & geoscience division committee. he is a member of seg and maa and honorary member of eage.
0001122 Jun 2022DLP Webinar on Chevron Optimization Framework for Imaging and Inversion (COFII) – an open-source and cloud friendly Julia language framework for seismic modeling and inversion
Distinguished Lecturer Webinar
Dr John WashbourneDistinguished Lecturer Webinar2022JuneEAGE
0001223 Jun 2022E-lecture Webinar on Depth Domain Inversion: A Least-Squares Migration Approach To Quantitative Interpretation
Distinguished Lecturer Webinar
Claudio LeoneDistinguished Lecturer Webinar2022JuneEAGE
0001327 Jun 2022E-Lecture on Automated Top and Base Salt Interpretation Using Machine Learning
E-Lecture Webinar
Oddgeir GramstadE-Lecture Webinar2022JuneEAGE
0001427–29 Jun 2022Sub-Surface Uncertainty Evaluation (SUE)
Interactive Online Short Course
Manish AgarwalGeophysicsIntegrated GeophysicsInteractive Online Short Course2022JuneEAGE
0001527 Jun — 27 Jul 2022Introduction to Machine Learning for Geophysical Applications
An EAGE Extensive Online Course
Jaap MondtData ScienceMachine LearningExtensive Online Course2022JuneEAGE
0001630 Jun 2022E-Lecture Webinar on Seismic Monitoring of the United Downs Deep Geothermal Power Project
E-Lecture Webinar
German RodriguezE-Lecture Webinar2022JuneEAGE
000175–6 Jul 2022Machine Learning in Geosciences
Interactive Online Short Course
Gerard SchusterData ScienceMachine LearningInteractive Online Short Course2022JulyEAGE
000187 Jul 2022E-Lecture Webinar on Chevron Optimization Framework for Imaging and Inversion (COFII) – an open-source and cloud friendly Julia language framework for seismic modeling and inversion
E-Lecture Webinar
John WashbourneE-Lecture Webinar2022JulyEAGE
000197–8 Jul 2022Geology and Engineering of Carbon Capture and Storage
Interactive Online Short Course
Grant Wach and Maurice DusseaultEnergy TransitionInteractive Online Short Course2022JulyEAGE
0002012–15 Jul 2022Deepwater Reservoirs: Exploration and Production Concepts
Interactive Online Short Course
Dorrik StowGeologyGeological ModelingInteractive Online Short Course2022JulyEAGEgeology geological modeling deepwater reservoirs: exploration and production concepts continental margin drilling facies marine sand sandstone sequence stratigraphy shale turbidite instructor: prof. dorrik stow (heriot-watt university, edinburgh, united kingdom) sandstones deposited in deep marine environments form important hydrocarbon reservoirs in many basins around the world. interbedded mudstones can be important as source rocks, as well as acting as barriers, baffles and seals. deepwater reservoirs are currently the principal target for oil and gas exploration, with over 1600 existing turbidite fields and plays. driven by technological advances and much improved scientific understanding, the pace of exploration and discovery in this realm is fast accelerating. keeping pace with these developments and with the new knowledge base is essential for all those involved in deepwater systems. what began as the turbidite reservoir has matured into the more varied deepwater play of the 21st century that no company can afford to ignore. this course is designed to provide the participant with a state-of-the-art review and update, thereby providing an overall understanding of the complexity of the deep marine system. it will outline the processes and facies and how they evolve on the slope and in the open ocean; discuss how these facies build into distinctive architectural elements and how they can be recognized in the subsurface. the course also covers analysis and interpretation of seismic records, sea floor images, well logs (including borehole image logs), core materials and outcrop characteristics of the component elements of deepwater reservoirs, emphasizing internal architecture as related to reservoir performance. examples from different deepwater plays around the world will be used to further illustrate their exploration, appraisal, development and reservoir management. day 1 : deepwater overview, building blocks & architecture global overview • global and historical perspectives, technologies and current trends • deepwater systems with hydrocarbons or hydrocarbon potential • ancient and modern analogues of deepwater systems • process-facies overview and state-of-the-art downslope systems • mass transport processes and facies: slides, slumps, debris flows • turbidity currents: massive sands and thin-bedded turbidites • hyperpycnal flows: new deepwater models • subsurface recognition, examples and reservoir characteristics alongslope systems • contour (bottom) currents: processes and facies • deepwater tides, waves and other bottom currents • subsurface recognition, examples and reservoir characteristics open-ocean systems • pelagic-hemipelagic processes and facies • deepwater black shales: nature, occurrence and examples • petroleum perspective: barriers, baffles and source rocks architecture: channel style and geometry • overview of deepwater architectural elements • channel style, geometry fill characteristics • mass transport complexes in channels and basins • subsurface wireline logs and reservoir examples architecture: lobes, mounds and sheets • turbidite lobes and sheets • contourite drifts and sheets • subsurface wireline logs and reservoir examples day 2 : seismic/sequence stratigraphy and deepwater plays subsurface models • synthesis of deepwater models and their features • seismic characteristics of deepwater elements and systems • wireline log characteristics and borehole image logs • sea-level, tectonic, sediment supply and other controls • sequence stratigraphy and depositional models deepwater massive sands • case studies: modern, ancient and subsurface examples • reservoir size, homogeneity and connectivity • deliberate search for the perfect deepwater reservoir thin-bedded turbidites • case studies: modern, ancient and subsurface examples • reservoir potential and development issues • the problem of shales and shale dimensions deepwater drilling • special issues for drilling in deepwater • slope instability and hazard mapping • turbidity currents and bottom currents: potential hazard deepwater plays workshop • lessons from established turbidite plays: north sea, california, bohai and others • lessons from current deepwater provinces: gulf of mexico, west africa, nw uk continental margin, brazil, north slope alaska, nile delta and others • interactive discussion session to consider implications for exploration, appraisal, development and reservoir management; to share and discuss individual datasets, experience, questions and problems • the new frontiers…current targets and expectation • course summary and take-home lessons all geologists, geophysicists and petroleum engineers involved in exploration and development of the deepwater play. project managers for deepwater plays and reservoir production. participants should have basic knowledge of stratigraphy and sedimentology. professor stow is a leading specialist and internationally renowned expert in deepwater sedimentary systems, with 40 years experience in modern, ancient and subsurface sediments. he has a particular interest in deepwater hydrocarbons, including numerous joint research projects with industry, individual consultancies, short course and field course organisation. his extensive record of scientific publications includes over 250 scientific papers and reports, numerous books and edited volumes. he is currently engaged on a major research initiative with the integrated ocean drilling program that drilled west of the gibraltar gateway in the atlantic ocean, and writing a book on deepwater sedimentary systems. professor stow is a lively, interesting and highly informed instructor. he is a seasoned presenter to audiences large and small, specialist and generalist. he is able to draw upon a great wealth of experience and examples to fully illustrate his presentations, and utilizes short course exercises for further instruction. his teaching and instruction has been highly acclaimed at all levels. his recent text sedimentary rocks in the field (manson, 2005) is a must-have for students and professional geologists alike, while oceans: an illustrated reference (oxford university press and university of chicago press, 2004) and vanished ocean (oup 2010) represent a venture into popular science. he is currently head of the institute of petroleum engineering and professor of petroleum geoscience at heriot watt university (edinburgh, uk). professor stow has been an enthusiastic lecturer and speaker throughout the world, on everything from deep-sea turbidites to the lost tethys ocean. he has worked with many different oil and gas companies in the provision of in-house or collective courses, field and core workshops, and in collaborative research projects. companies have included: anadarko, agaco, bp, britoil, chevron, elf, etap, maersk, mobil, next schlumberger, nexen, petrobras, petronas, repsol, shell, and uni.
000212–5 Aug 2022Introduction to Data Analysis: Concepts and Examples
Interactive Online Short Course
Dr Robert GodfreyGeophysicsSeismic ProcessingInteractive Online Short Course2022AugustEAGE
0002223–26 Aug 2022Construction of Fractured Reservoir Models for Flow Simulation Incorporating Geology, Geophysics and Geomechanics
Interactive Online Short Course
Reinaldo Michelena, Chris Zahm & James GilmanGeologyGeological ModelingInteractive Online Short Course2022AugustEAGE
000236–9 Sep 2022Seismic Interpretation: Fundamental for Prospect Generation
Interactive Online Short Course
Mr Dean PowellGeophysicsIntegrated GeophysicsInteractive Online Short Course2022SeptemberEAGEgeophysics integrated geophysics seismic interpretation: fundamental for prospect generation 2d case study depth conversion faults interpretation land seismic mapping oil and gas rock physics seismic attributes seismic stratigraphy instructor: mr dean powell (powell seismic services) seismic data provide us with a response from the subsurface, rather than a model of the subsurface. the challenge for the seismic interpreter is to understand this response, manipulate it in accurate and creative ways in order to model the geology that gave rise to it, and in the process identify drilling targets. this course is designed to help geoscientists meet that challenge by assisting them to: - understand the basics of seismic acquisition and processing, - gain familiarity with qualitative and quantitative aspects of the seismic interpretation process, - utilize various interpretation techniques and tools, - identify and avoid obstacles that limit the reliability of an interpretation, - approach interpretation problems with creativity and perseverance, - apply sound geological reasoning, - build an understanding of how the ingredients can be integrated to constitute a reliable interpretation, - evaluate the risk of exploration success, - journey through the interpretation process to the choice of a drilling location. the course utilizes a comprehensive 2d interpretation exercise based on an actual exploration scenario. this exercise is tackled in different stages throughout the course, helping participants to progressively incorporate the many aspects of the interpretation process, from the early stages of understanding the geological setting and making the stratigraphic correlations, followed by fault interpretation and horizon mapping, through to depth conversion and geological modeling. additional exercises and case histories complement the classroom instruction, helping participants develop an open and creative mindset to broader exploration objectives as well as to the detail required for prospect generation. this mindset is one that looks for value in contributions from outside the strictly geophysical arena and also incorporates the geological risking process as a means of injecting rigor into the interpretation process. reinforcing the lessons gained from the major interpretation exercise, the concluding case history provides a further illustration of the integration of the available geotechnical data to achieve a successful outcome. this is not a survey design course. survey design is discussed but not covered in detail. after attending this course, the participant will: • recognize the limitations imposed on a seismic dataset by acquisition and processing specifications; • identify key mapping horizons and play types in a seismic dataset; • translate the seismic image into a realistic geological model; • generate credible hydrocarbon prospects. day 1 • the background: basic geophysics • the preparation: understanding the geology > exercise stage 1 • the kick-off: early observations > exercise stage 2 • the map: structural interpretation > exercise stage 3 day 2 • the model: seismic stratigraphy • the detail: quantitative interpretation > exercise stage 4 • the risk: prospect evaluation > exercise stage 5 • the background: basic geophysics all those interested in seismic imagery. the acquisition geophysicist may discover an unfamiliar presentation of familiar concepts. the processing geophysicist may discover the causes of some types of perturbations in seismic images. likewise, the interpreter may gain understanding of the limitations in seismic images. those in charge of financing these images may understand better why they are so expensive. the course is designed especially for early-career geophysicists and geologists as well as students in geoscience disciplines. it will also benefit other professionals involved in oil and gas exploration, particularly engineers and managers who wish to gain a better understanding of the role of seismic data in identifying drilling targets and to make a more informed assessment of the risk associated the decision to drill an exploration well. dean powell acquired a bachelor degree in applied science from the queensland university of technology at the end of the 1960s. he then began his geophysical career with a chevron affiliate in west australia, gaining extensive experience in the acquisition, processing and interpretation of seismic data. subsequently, he worked as a perth-based geophysical consultant for many years, providing project management as well as technical services on exploration and development projects in vietnam, new zealand and in many of australia's sedimentary basins. during the first decade of this century dean was employed as a principal geophysicist with origin energy. in this capacity he supervised 2d and 3d seismic acquisition and processing projects, although his main responsibility was the interpretation and mapping of seismic data. dean provided regional and prospect-scale mapping for exploration in many onshore and offshore regions in western australia and other parts of australia, as well as in indonesia, malaysia, new zealand and vietnam. in 2013 dean resumed his consultancy role, and has been engaged in the provision of seismic acquisition, processing and interpretation services relating to conventional and unconventional prospect generation as well as field development in a number of australian basins and in the timor sea. much of dean's experience has been in poorer data quality areas, enabling dean to develop particular expertise in the interpretation of poor quality datasets. over the years, drilling on the basis of dean's prospect mapping has, to date, resulted in more than a dozen commercially successful wildcat and near-field oil and gas discoveries.
000247–8 Sep 2022Integrated Seismic Acquisition and Processing
Interactive Online Short Course
Jack BouskaGeophysicsSeismic AcquisitionInteractive Online Short Course2022SeptemberEAGEgeophysics seismic acquisition integrated seismic acquisition and processing 3d dense surveys dynamite imaging interpretation land seismic mapping migration near surface obc offshore onshore sand sensors sparse data survey design vibroseis wave propagation instructor: mr jack bouska (independent consultant, calgary, ab, canada) this course covers both modern and future practices in 3d seismic acquisition survey design and field operations. the seismic experiment is introduced as part of a larger integrated system, one composed of acquisition design, field operations, data processing, imaging and interpretation. this one- or two-day course emphasizes how real-world aspects of interpretation, data processing, imaging and field operations can either constrain or liberate various survey design parameter choices. the course material conveys the full breadth of knowledge and tools required to select and adjust survey design parameters for optimum imaging of the subsurface target, while honouring equipment limits and surface constraints. the syllabus develops a practical set of survey design skills, using a combination of both presentations and in-class exercises. this knowledge and skill base is also reinforced using specific examples of cutting edge seismic acquisition projects from around the globe. all case histories were selected to emphasize the value of long offset, wide azimuth and simultaneous source techniques for onshore and offshore ocean bottom seismic acquisition 3d designs, employing both large and small field crews. each participant will gain exposure to the core principals of seismic 3d survey design, along with practice in selecting a balanced set of 3d acquisition geometry parameters for both optimum field implementation and competent data processing. students will also learn how those parameter choices directly affect acquisition operations, data processing and the quality of the final image volume. • foundations of seismic system integration and subsurface mapping; • methods of acquiring seismic data, to image the subsurface; • optimum processing of wide azimuth seismic data, to image the subsurface; • introduction to the survey design study, a data driven investigation into survey objectives, mapping requirements and geographic constraints; • the survey design procedure, techniques for selecting a balanced set of 3d geometry parameters; • offshore ocean bottom seismic 3d survey design, with worked examples; • onshore 3d seismic surveys using explosive sources, with worked examples; • onshore 3d seismic surveys using vibroseis sources, with simultaneous source examples. the course is designed for: 1. seismic acquisition specialists who wish to learn more about designing cost-effective acquisition programmes, that are well matched to state-of-the-art processing and imaging techniques, along with strategies to exploit the future of high channel count crews in order to create ultra-high quality images; 2. seismic processing specialists who wish to learn about how acquisition geometry parameter choice directly affects the ability to attenuate noise, and image the subsurface, in the context of a modern processing scheme 3. seismic interpreters with a desire to know more about both of the above. participants are assumed to possess a working knowledge of the reflection seismic method and its use in exploration and reservoir management. jack bouska graduated with a geophysics degree from the university of alberta (1980), and started working at seiscom-delta (1981) then moved to western geophysical (1983), before joining dome petroleum in 1985, persevering through the dome-amoco-bp mergers of 1988 & 1998. his career included residence in; london u.k., muscat oman, and calgary alberta, while tackling a wide variety of projects spanning across five continents. initial projects included revitalizing cost effective exploration for amoco canada using his invention of sparse-3d, later expanding into the s. american andes, designing and acquiring some of the world’s largest heli-portable 3d’s. his innovation at bp continued with novel acquisition techniques for seabed obc-3d’s in the north sea, caspian sea, gulf of suez, abu dhabi, indonesia and west of shetlands. while in the uk, jack also acted as team leader for the upstream technology reservoir management team, prior to moving to oman as the middle east region seismic delivery manager, where he instigated several ultra-high speed vibroseis surveys made possible by his invention of distance separated simultaneous sweeping (ds3). while in oman, he also invented a new type of seismic sensor and autonomous node recorder, resulting in several patents (as inventor) and a commercial implementation (the bp-schlumberger-rosneft nimble node). in 2013 he moved back to calgary as regional seismic delivery manager for bp’s oil sands and canadian offshore seismic programs, before retiring in 2015, and turning his attention to industry training and consultation. as an author of more than 50 industry papers and technical presentations, jack's innovations in seismic acquisition design and processing have been recognized by numerous geophysical societies; including the cseg with the best theme paper award in 1995, best of session papers in 1997 & 98 and best technical luncheon talk of 2014. the seg also awarded jack the best paper in the leading edge 2005, and honourable mention in best paper category, 2005 national convention. jack has served as an eage distinguished lecturer for 2007-2008 and in 2009, the society of exploration geophysicists selected him as the spring seg distinguished lecturer in geophysics. jack is an active member of the eage, seg, cseg, and apega.
0002514–15 Sep 2022Geophysical Data Analysis in Julia, including Machine Learning
Interactive Online Short Course
Dr Rajiv KumarData ScienceMachine LearningInteractive Online Short Course2022SeptemberEAGE
0002619 Sep — 19 Oct 2022Developing Deep Learning Applications for the Oilfield: From Theory to Real World Projects
An EAGE Extensive Online Course
Bernard MontaronData ScienceMachine LearningExtensive Online Course2022SeptemberEAGE
0002720–23 Sep 2022Applied Microfacies
Interactive Online Short Course
Prof. Dr Michael PoppelreiterGeophysicsIntegrated GeophysicsInteractive Online Short Course2022SeptemberEAGEpetrophysics rock physics applied microfacies carbonates diagenesis mineralogy permeability stratigraphy thin section wells instructor: prof. dr michael poppelreiter (shell, kuwait) hands-on microfacies characterization using industry data sets. analysis: mineralogy, components, pore types, diagenesis. participants are instructed on how to capture observations such that patterns and rules might be detected. the course encourages participants to think of processes and products during thin section characterization. industry data sets are used to illustrate the use of microfacies characterization to help solve operational issues of carbonate fields. production increase is demanded. wells (fully cored) show contrary production behavior. the stratigraphy is ‘layer cake’ and both wells are perforated in the highest perm interval of a few meters thick. thin sections are linked with petrophysical data, openhole logs and production data. course participants are encouraged to use thin section descriptions to develop a conceptual model for permeability based on a depositional model architecture based on the investigation of available this sections. upon completion of the course, participants will be able to: • quality control thin sections. • determine the mineralogy of a stained section. • characterize fossiliferous and non-fossiliferous components such as ooids or brachiopods. • classify the carbonate texture (dunham) and grain geometry. the course is designed for geologists, petrophysicists, stratigraphers as well as explorers in academic and industry positions. participants should have knowledge of the principles of carbonate geology and a fundamental understanding of petrophysics. prof. dr michael c. poppelreiter, director of the south east asian carbonate research lab (seacarl), shell chair in petroleum geology at the department of geosciences, universiti teknologi petronas (utp). from october 2019 he has been working for shell kuwait. area of expertise: shell subject matter expert for carbonate geology, outcrop and regional geological studies (focus middle east), conceptual modelling, reservoir modelling and 3d digital modelling, project management, co2 in carbonate, technical assurance & capability (ta-2), 25 publications and 2 books on borehole image logs and reservoir geology.
000283 Oct — 3 Nov 2022Non-Seismic Data Acquisition and Processing: Gravity and Magnetics
An EAGE Extensive Online Course
Jaap MondtNear SurfaceNon-Seismic MethodsExtensive Online Course2022OctoberEAGE
000294 Oct — 4 Nov 2022Data Science for Geoscience
An EAGE Extensive Online Course
Jef CaersExtensive Online Course2022OctoberEAGE
000305–7 Oct 2022Land Seismic Survey Design
Interactive Online Short Course
Paul RasGeophysicsSeismic AcquisitionInteractive Online Short Course2022OctoberEAGEgeophysics seismic acquisition land seismic survey design 3d broadband imaging integration inversion land seismic modeling noise sensors signal processing simultaneous source vibroseis wide azimuth instructor: mr paul ras (sd2i geophysical consulting, netherlands) this course presents an integrated approach to modern land 3d seismic survey design as it has a key role in the seismic value chain going from acquisition to processing, imaging and inversion & characterization. it will describe the main technology advances in land seismic acquisition: high-channel count single sensor (point receiver), simultaneous source high-productivity vibroseis, broadband and wireless nodal systems. new acquisition technology has in turn inspired progress in processing, imaging and inversion & characterization. seismic survey designs have changed accordingly, wide azimuth high-density surveys are now the norm in many environments. and the survey design workflow now includes single sensor, single source, simultaneous source, broadband, symmetric sampling, cross-spreads, spatial continuity and more powerful 5d interpolation methods. it has also become more integrated, with requirements from processing, imaging and inversion & characterization feeding back to the design and hence acquisition. the purpose of this course is to understand: • the main parameters related to land survey design; • the generic land seismic survey design workflow; • the impact of the new acquisition technology on survey design; • how design and acquisition affects processing, imaging and inversion and characterization. 1. introduction: setting the stage discussing the survey design process as part of the seismic value chain and from the perspective of integrated project design; 2. survey design workflow: generic survey design workflow introducing the basic design parameters and explaining how they are estimated. among other things this involves survey objectives, resolution, signal and noise. in the next sections, we will show the impact of the new technologies; 3. the advent of high-channel count systems has enabled single sensor (or point receiver) recording. this can provide unaliased sampling of signal and noise enabling 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, which can improve spatial sampling and reduce cost by increasing productivity; 5. broadband: driven by imaging and inversion requirements, there has been a major technology effort to increase bandwidth, mostly on the low but also on the high frequency side of the spectrum; 6. wireless nodal systems significantly improve operational flexibility in restricted areas; increasingly being used with single sensors. nodal technology is developing fast with higher channel counts while improving wifi & bluetooth technology enables better qc; 7. the impact of survey design at the data processing stage includes receiver sampling for adequate noise suppression, improved source sampling for well 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, and enable good surface wave inversion for near surface modeling; 8. at the imaging stage we should ensure spatial continuity, good spatial sampling (cmp bin), trace density, azimuth/offset sampling for azimuth preserving ovt migration, sufficient migration aperture and bandwidth. we can model for good illumination; 9. to ensure optimum inversion – in particular pre-stack and avoaz – and reservoir characterization, wide azimuth, high-density survey designs can provide good azimuth/offset sampling and s/n. low frequency data (broadband) will reduce the dependency on well data, high frequency data and good spatial sampling will optimize resolution; 10. finally, there will be a quick look at some future developments like ongoing research efforts in the area of vibroseis sources, simultaneous sources and wavefield interpolation. acquisition geophysicists who are naturally involved in survey design but also processing geophysicists and interpreters who wish to understand how acquisition programmes can be tailored to tackle their problems. the course may also be beneficial to geoscience (geophysics and geology) students. participants are assumed to have basic knowledge of seismic acquisition and processing techniques. with more than 20 years industry experience principally with schlumberger, paul ras has worked in land seismic acquisition, survey evaluation & design, data processing, inversion & reservoir characterization. he is currently a geophysical consultant based in the netherlands, teaching and consulting for schlumberger next and working with geophysics startups. paul began his career at tno institute of applied geoscience and delft geophysical in the netherlands, working in software development and as a seismologist on field crews. he then worked in various roles for geco-prakla, on crews and in the survey evaluation and design group. after a three year secondment at saudi aramco followed by starting up westerngeco’s data processing center in saudi arabia, he moved to inversion and reservoir services working for schlumberger’s dcs segment based in cairo. then came various technical and project management roles mainly involving new technology like the land uniq acquisition system, land demultiple processing and seismic guided drilling. from 2013 until 2015 he worked as a land area geophysicist for westerngeco based in the uk. paul is a graduate in applied geophysics from delft university of technology in the netherlands.
000318 Nov — 8 Dec 2022Introduction to Machine Learning for Geophysical Applications
An EAGE Extensive Online Course
Jaap MondtData ScienceMachine LearningExtensive Online Course2022NovemberEAGE
00032On DemandCarbonate Reservoir Characterization
Self-paced Online Course
Dr Laura GalluccioGeologyCarbonate GeologySelf-paced Online Course2022MayEAGEgeology carbonate geology
00033On DemandEET 13: Velocities, Imaging, and Waveform Inversion - The Evolution of Characterizing the Earth's Subsurface
Self-paced Online Course
Dr Ian JonesGeophysicsSeismic ProcessingSelf-paced Online Course2022MayEAGEgeophysics seismic processing
00034On DemandGeostatistical Reservoir Modeling
Self-paced Online Course
Prof. Dario GranaGeophysicsSeismic Reservoir CharacterizationSelf-paced Online Course2022MayEAGEgeophysics seismic reservoir characterization
00035On DemandShell: Geology for Non-geologists
Partner Course
Young-Kon Yong (main instructor)GeologyGeological ModelingPartner Course2022MayShellgeology geological modeling
00036On DemandMetakinetic: Borehole Breakout Analysis
Partner Course
Simulation-based trainingGeologyGeomechanicsPartner Course2022MayMetakineticgeology geomechanics
00037On DemandMetakinetic: Detectability Analysis
Partner Course
Simulation-based trainingGeophysicsPassive SeismicPartner Course2022MayMetakineticgeophysics passive seismic
00038On DemandMetakinetic: PVT Analysis
Partner Course
Simulation-based trainingEngineeringReservoir EngineeringPartner Course2022MayMetakineticengineering reservoir engineering
00039On DemandMetakinetic: Rock Mass Rating
Partner Course
Simulation-based trainingEngineeringRock MechanicsPartner Course2022MayMetakineticengineering rock mechanics
00040On DemandMetakinetic: Volume of Shale - Gamma Ray Log
Partner Course
Simulation-based trainingGeologyPetrophysicsPartner Course2022MayMetakineticgeology petrophysics
00041On DemandMetakinetic: Wedge modeling
Partner Course
Simulation-based trainingGeophysicsSeismic ProcessingPartner Course2022MayMetakineticgeophysics seismic processing
00042On DemandIn Pursuit of Increased Seismic Resolution while preserving Amplitude Fidelity
E-Lecture Recording
Joseph ReillyGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00043On DemandFull Waveform Inversion of Love Waves in Anisotropic Media
E-Lecture Recording
Valérie KrampeGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00044On DemandAutomated top and base salt interpretation using machine learning
E-Lecture Recording
Oddgeir GramstadData ScienceMachine LearningE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00045On DemandAssessing the link between EMI data and hydrocarbon pollution at a former refinery site
E-Lecture Recording
Luis Cavalcante FragaNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00046On DemandJoint VP and VS Monte Carlo Inversion from Surface Wave Data
E-Lecture Recording
Farbod AnjomGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00047On DemandPermeability prediction from Induced Polarization at field scale
E-Lecture Recording
Gianluca FiandacaNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00048On DemandSeafloor Massive Sulfide Eploration - A New Field of Activity for Marine Electromagnetics
E-Lecture Recording
Hendrik MullerGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEseafloor 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.
00049On DemandFeasibility of 3D random seismic arrays for subsurface characterizations in urban environments
E-Lecture Recording
Bojan BrodicGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00050On DemandSeismic Attenuation: Friend or Foe
E-Lecture Recording
Mark VardyGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00051On DemandMETIS, a field-proof innovative method to revolutionize onshore seismic acquisition
E-Lecture Recording
Bruno PagliacciaGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00052On DemandNear surface geophysics for engineering
Student E-Lecture Recording
George TuckwellNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEnear 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.
00053On DemandFWI with Optimal Transport: a 3D Implementation and an Application on a Field Dataset
E-Lecture Recording
Jeremie MessudGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00054On DemandQuantitative prediction of injected CO2 at Sleipner using wave-equation based AVO
E-Lecture Recording
Peter HaffingerReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00055On DemandStructural Dip, Migration and Quantitative Interpretation
E-Lecture Recording
Ehsan Z. NaeiniGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEit 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).
00056On DemandDepth Domain Inversion: a Least-squares Migration Approach to Quantitative Interpretation
E-Lecture Recording
Claudio LeoneGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEqi 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.
00057On DemandCracking Open the Black Box
Student E-Lecture Recording
Jesper Sören DramschData ScienceMachine LearningE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00058On DemandMaking the Transition from Discrete shot Records to Continuous Wavefields – Data Examples
E-Lecture Recording
Tilman KluverGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00059On DemandMaking the transition from discrete shot records to continuous wavefields - Methodology
E-Lecture Recording
Stian HegnaGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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
00060On DemandIncreasing Acquisition Efficiency by Acquisition of Data During Turns, Using a Multimeasurement Streamer
E-Lecture Recording
Sneha BiswasGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00061On DemandReservoir Elastic Parameters Estimation from Surface Seismic Data using JMI-res: A Full-Wavefield Approach
E-Lecture Recording
Aayush GargGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEtraditionally, 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.
00062On DemandTriple-Source Simultaneous Shooting, a Future for Higher Density Seismic
E-Lecture Recording
Jan LanghammerGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEjan 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
00063On DemandImproved Rock Property Estimation from Joint Inversion of PP and PS Reflectivities
E-Lecture Recording
Ivan LehockiReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00064On DemandSedimentology and Reservoir Properties of Chalk
Student E-Lecture Recording
John D. HumphreyReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00065On DemandGiant Regional Play Fairways from Modern Seismic Data - part 2
E-Lecture Recording
Neil Hodgson and Karyna RodriguezGeologyStructural GeologyE-Lecture RecordingOn DemandOn DemandEAGEsecond 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.
00066On DemandGiant Regional Play Fairways from Modern Seismic Data - part 1
E-Lecture Recording
Neil Hodgson and Karyna RodriguezGeologyStructural GeologyE-Lecture RecordingOn DemandOn DemandEAGEfirst 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.
00067On DemandExploration Discoveries and Future Trends
E-Lecture Recording
Andrew LathamGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEthe 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.
00068On DemandUsing Digital Music Technology for Geophysical Data Analysis and Interpretation
E-Lecture Recording
Paolo Dell'AversanaGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00069On DemandMaximising the Benefits of Full Waveform Inversion
E-Lecture Recording
Fabio ManciniGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEfull-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.
00070On DemandA New Take On FWI: Wavefield-Reconstruction Inversion
E-Lecture Recording
Felix HerrmannGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEfull-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.
00071On DemandSeismic Spatial Gradient Measurements
E-Lecture Recording
Nihed el AlloucheNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGErotation 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.
00072On DemandA 2nd-order Adjoint Truncated Newton Approach to Time-domain Multiparameter Full Waveform Inversion in Viscoacoustic Medium
E-Lecture Recording
Pegliang YangGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00073On DemandTheory for Marchenko Imaging of Marine Seismic Data with Free Surface Multiple Elimination
E-Lecture Recording
Evert SlobGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00074On DemandVirtual Seismology: monitoring the subsurface with virtual sources and receivers
E-Lecture Recording
Kees WapenaarGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00075On DemandChalk Porosity and Diagenesis
Student E-Lecture Recording
John D. HumphreyReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00076On DemandBedrock and Fracture Zone Delineation Using Different Near-Surface Seismic Sources
E-Lecture Recording
Bojan BrodicNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00077On DemandCharacterization of Holocene Sediments Using Geophysical Methods and Borehole Information: Ebro Delta (Spain)
E-Lecture Recording
Beatriz BenjumeaNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEbeatriz 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.
00078On DemandGeoBIM for Infrastructure Planning
E-Lecture Recording
Mats SvenssonEngineeringPetroleum EngineeringE-Lecture RecordingOn DemandOn DemandEAGEeage 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.
00079On DemandReducing project turnaround by optimizing the model building workflow using full-waveform inversion and reflection tomography: A North Sea case study
E-Lecture Recording
Shruti GuptaGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEtwo 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.
00080On DemandAn Iterative Workflow for Facies Modeling on the Alvheim Field, Norwegian Continental Shelf
E-Lecture Recording
Andor HjellbakkGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00081On DemandEfficient 3D Frequency-Domain FWI of OBC Data
E-Lecture Recording
Stéphane OpertoGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEwide-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.
00082On DemandA Novel Source-Over-Cable Solution to Address the Barents Sea Imaging Challenges
E-Lecture Recording
Per Eivind DhelieGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00083On DemandSeismic Interpretation with Deep Learning
E-Lecture Recording
Anders U. WaldelandData ScienceMachine LearningE-Lecture RecordingOn DemandOn DemandEAGEhow 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.
00084On DemandShooting over the Spread
E-Lecture Recording
Vetle VinjeGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00085On DemandMicroseismic Monitoring of a Tight Light Oil Reservoir
Student E-Lecture Recording
John DuhaultReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEthis 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).
00086On DemandSeismic Facies Classification Using Multimedia and Machine Learning
E-Lecture Recording
Paolo Dell'AversanaGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEpaolo 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.
00087On DemandHow to store CO2 underground
Student E-Lecture Recording
Philip RingroseEnergy TransitionEnergy TransitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00088On DemandThe Effect of Shale Activation on the 4D Seismic Interpretation of a UKCS Field
E-Lecture Recording
Ricardo RangelGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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
00089On DemandThe Importance of Overburden Stress Path in Assessment of Stress Dependence for 4D Applications
E-Lecture Recording
Rune M. HoltReservoir CharacterizationGeomechanicsE-Lecture RecordingOn DemandOn DemandEAGEthe 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.
00090On DemandCombining Machine Learning and Musical Attributes for Seismic Facies Classification
Student E-Lecture Recording
Paolo Dell'AversanaData ScienceMachine LearningE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00091On DemandA Misfit Function Based on an Optimal Transport Distance for FWI
E-Lecture Recording
Ludovic MétivierGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00092On DemandMarine CSEM - Understand the quintessence
Student E-Lecture Recording
Ludovic PeignardNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEunderstanding 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.
00093On DemandSimulating Correlated Discrete Fracture Networks constrained by Microseismic Data
E-Lecture Recording
François BonneauReservoir CharacterizationGeomechanicsE-Lecture RecordingOn DemandOn DemandEAGEthis 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).
00094On Demand‘Online’ Marchenko Focusing and Target-oriented Modeling
E-Lecture Recording
Patrick ElisonGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEwith 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.
00095On DemandViscoelastic Full Waveform Inversion; a Symmetrization Strategy
E-Lecture Recording
Gabriel Fabien-OuelletGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEseismic 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.
00096On DemandIntegrated Geophysics and New Methods for Multi-nodal Data Analysis
E-Lecture Recording
Paolo Dell' AversanaGeophysicsIntegrated GeophysicsE-Lecture RecordingOn DemandOn DemandEAGEthe 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.
00097On DemandOne 4D Geomechanical Model - and it's Many Applications
E-Lecture Recording
Jorg HerwangerReservoir CharacterizationGeomechanicsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00098On DemandQ-Compensation Through Depth Domain Inversion
E-Lecture Recording
Maud CavalcaGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEcompensation 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.
00099On DemandAutomatic Gas Pockets Detection by High Resolution Volumetric Q-Tomography Using Accureate Frequency Peak Estimation
E-Lecture Recording
Fatiha GamarGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00100On DemandSubsalt Time-Lapse Seismic for Reservoir Monitoring Using i4D in Deepwater
E-Lecture Recording
David ChalenskiReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEdavid 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.
00101On DemandCognition and Seismic Interpretation
Student E-Lecture Recording
Gaynor PatonGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEseismic 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.
00102On DemandAn Analytical Approach to Hydraulic Fracturing
Student E-Lecture Recording
John DuhaultReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00103On DemandThe Startup of Permanent Reservoir Monitoring for Snorre and Grane
E-Lecture Recording
Mark ThompsonReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEstatoil 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.
00104On DemandChasing Channel Sands
Student E-Lecture Recording
Peter LloydReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEwith 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.
00105On DemandAn Introduction to Migration without a Single Equation
E-Lecture Recording
Claudio StrobbiaGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00106On DemandBarents Sea Case Study: Integrated Depth Velocity Model Building
E-Lecture Recording
Marit GuttormsenGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00107On DemandA Tutorial on Gassmann’s Fluid Substitutions
Student E-Lecture Recording
Pierre-Olivier LysReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEgassmann'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.
00108On DemandFrequency Decomposition of Seismic Data
Student E-Lecture Recording
Gaynor PatonGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEeage 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.
00109On DemandSub-Salt modelling in 3D – Integration of Seismic, Well and Gravity Data, Validated by Drilling
E-Lecture Recording
Antony PriceGeophysicsIntegrated GeophysicsE-Lecture RecordingOn DemandOn DemandEAGEoffshore 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.
00110On DemandWell Tie: Principles and New Advancements for Broadband Seismic Data
E-Lecture Recording
Ehsan NaeiniGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00111On DemandWave-Equation-Based AVO Inversion for High-Resolution Reservoir Characterisation
E-Lecture Recording
Dries GisolfGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEwave-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.
00112On DemandApplied AVO
E-Lecture Recording
Anthony FoggReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEavo (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.
00113On DemandUnderstanding Spectral Decomposition
E-Lecture Recording
Victor AarreGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEspectral 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.
00114On Demand3D Inversion of Magnetic Data Affected by Remanent Magnetization
E-Lecture Recording
Yaoguo LiNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEthe 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.
00115On DemandWide-Azimuth Acquisition with Radial Domain Interpolation for Fluvial Morphology Interpretation
E-Lecture Recording
Anastasia PooleGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEthe 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.
00116On DemandSeismic Multiple Removal Techniques: Past, Present and Future
E-Lecture Recording
Eric VerschuurGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEeric 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.
00117On DemandImpact of Acquisition Geometry on AVO/AVOA Attributes Quality
E-Lecture Recording
Amine OurabahGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEwith 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.
00118On DemandSeismic Screening for Hydrocarbon Prospects Using Rock-Physics Attributes
E-Lecture Recording
Per AvsethReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEa 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!
00119On DemandQuantitative 4D Analysis Using Business Analytics
E-Lecture Recording
Mark ThompsonGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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
00120On DemandMulti-Azimuth Streamer Seismic in The Nile Delta: Depth Imaging
E-Lecture Recording
Walter RietveldGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEbp 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.
00121On DemandGeological Well Testing in Fractured Reservoirs
E-Lecture Recording
Patrick CorbettGeologyGeological ModelingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00122On DemandThe Art of Science
E-Lecture Recording
Roel SniederTraining and DevelopmentSoft SkillsE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00123On DemandSeismic Anisotropy in Shaly Formations…Revisited
E-Lecture Recording
Patrick N.J. RasolofosaonReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEseismic 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.
00124On DemandSeismic Characterization of Shallow Gas in The Netherlands
E-Lecture Recording
Mijke van den BoogaardReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEthe 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.
00125On DemandPetrographic coded correlations in petrophysics
Student E-Lecture Recording
Nina GegenhuberReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEeage 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.
00126On DemandIn-Situ Local Angle Domain Sata as an Ideal Representation for Directivity Driven Imaging
E-Lecture Recording
Zvi KorenGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00127On DemandQuantitative Analysis of Schoonebeek SeisMovie Data
E-Lecture Recording
Paul ZwartjesReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEa 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.
00128On DemandPaleogeography and Stratigraphy
E-Lecture Recording
Juan TavellaGeologyStratigraphyE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00129On DemandSeismic Surveillance for Reservoir Delivery "A Practitioner's Perspective"
E-Lecture Recording
Olav Inge BarkvedReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00130On DemandAccurate Modelling and Inversion With Structural Models Using The Finite-Difference Method
E-Lecture Recording
James HobroGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00131On DemandData-Driven Green's Function Retrieval from Reflection Data
E-Lecture Recording
Kees WapenaarGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEthis 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.
00132On DemandPassive Seismic Surface-Wave Interferometry for Reservoir-Scale Imaging
E-Lecture Recording
Sjoerd de RidderGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00133On DemandNotional ghosts
E-Lecture Recording
Gary HampsonGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEin 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.
00134On Demand4D Inversion of Continuous Land Seismic Reservoir Monitoring of Thermal EOR
E-Lecture Recording
Laurène MichouEngineeringPetroleum EngineeringE-Lecture RecordingOn DemandOn DemandEAGElaurene 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.
00135On DemandResolving Near-Surface Velocity Anomalies in Marine Data
E-Lecture Recording
Ian JonesGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEunresolved 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.
00136On DemandAn Electromagnetic Survey Of A Gas Hydrate Vent Offshore Mid-Norway
E-Lecture Recording
Andrei SwidinskyNear SurfaceNon-seismic MethodsE-Lecture RecordingOn DemandOn DemandEAGEandrei 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.
00137On DemandWater Velocity and Tide Measurement in Marine Seismic Acquisition
E-Lecture Recording
Kanglin WangGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEkanglin 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.
00138On DemandDistributed Acoustic Sensing Cable for Surface Seismic
E-Lecture Recording
Kees HornmanReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEdistributed 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.
00139On DemandWave Equation Receiver Deghosting
E-Lecture Recording
Craig BeasleyGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEcurrent 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.
00140On DemandDip Correction for Convolutional Modelling and Elastic Inversion
E-Lecture Recording
Adam CherrettGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEconvolutional 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.
00141On DemandSatellite InSAR Data Reservoir Monitoring From Space
E-Lecture Recording
Alessandro FerrettiEngineeringPetroleum EngineeringE-Lecture RecordingOn DemandOn DemandEAGEsatellite 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.
00142On DemandPseudo-Elastic Impedance - A Norwegian Sea Demonstration
E-Lecture Recording
Per AvsethReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEin 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!
00143On DemandHigh Resolution 3D Tunnel Seismic Reflection at Olkiluoto, Finland
E-Lecture Recording
Calin CosmaGeophysicsSeismic AcquisitionE-Lecture RecordingOn DemandOn DemandEAGEcalin 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.
00144On DemandVolume Based Modeling: Automated Construction of Complex Structural Models
E-Lecture Recording
Laurent SoucheGeologyGeological ModelingE-Lecture RecordingOn DemandOn DemandEAGElaurent 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.
00145On DemandSeismic 4D Inversion for Quantitative Use in Automated History Matching
E-Lecture Recording
Milana AyzenbergReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEmilana 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.
00146On DemandLeast Squares Reverse Time Migration
E-Lecture Recording
Bin WangGeophysicsSeismic ProcessingE-Lecture RecordingOn DemandOn DemandEAGEbin 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.
00147On DemandRock Physics and Seismic Reservoir Prediction Contrained by Depositional and Burial Trends
E-Lecture Recording
Per AvsethReservoir CharacterizationRock PhysicsE-Lecture RecordingOn DemandOn DemandEAGEin 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!
00148On DemandSeismic Geomechanics
E-Lecture Recording
Jorg HerwangerReservoir CharacterizationGeomechanicsE-Lecture RecordingOn DemandOn DemandEAGEin 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
00149On DemandHow to Submit a Good Abstract - Part 1
How-to-Video Recording
Aart-Jan van WijngaardenTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00150On DemandHow to Submit a Good Abstract - Part 2
How-to-Video Recording
Milos CvetkovicTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00151On DemandHow to Submit a Good Abstract - Part 3
How-to-Video Recording
Maartje HoubenTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00152On DemandHow to Present to a Live Audience - Preparation
How-to-Video Recording
Ivan VasconcelosTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00153On DemandHow to Present to a Live Audience - Non-Verbal Communication
How-to-Video Recording
Caroline LowreyTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00154On DemandHow to Present to a Live Audience - The Story, Part 1
How-to-Video Recording
Giles WattsTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00155On DemandHow to Present to a Live Audience - The Story, Part 2
How-to-Video Recording
Esther BloemTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00156On DemandHow to Present to a Live Audience - Interaction with the Audience, Part 1
How-to-Video Recording
Victor AarreTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00157On DemandHow to Present to a Live Audience - Interaction with the Audience, Part 2
How-to-Video Recording
John BrittanTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00158On DemandHow 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 BorselenTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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).
00159On DemandHow 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 BorselenTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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).
00160On DemandHow 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 BorselenTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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).
00161On DemandHow 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 BorselenTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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).
00162On DemandHow to Get Published - Part 1
How-to-Video Recording
Malcolm FrancisTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.
00163On DemandHow to Get Published - Part 2
How-to-Video Recording
Gareth WilliamsTraining and DevelopmentSoft SkillsHow-to-Video RecordingOn DemandOn DemandEAGEhow 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.

2021

Siddharth Misra

Award-Spinning-coin-

Prof Dr Siddharth Misra’s research focuses on improving subsurface characterization and prospect evaluation for the exploration of hydrocarbons, minerals and water resources.

His major contribution is in the theory of electromagnetic responses of geological formations to various charge polarization phenomena. The theory has enabled him to introduce a multi-frequency electromagnetic log-inversion technique to remove dielectric effects for improved estimation of hydrocarbon pore volume.

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