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Residual Prestack Migration And Interval Velocity Estimation
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Book Synopsis Residual Prestack Migration and Interval-velocity Estimation by : John Theodore Etgen
Download or read book Residual Prestack Migration and Interval-velocity Estimation written by John Theodore Etgen and published by . This book was released on 1990 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Copyright by the author.
Book Synopsis Prestack Depth Migration and Velocity Model Building by : Ian Frederick Jones
Download or read book Prestack Depth Migration and Velocity Model Building written by Ian Frederick Jones and published by SEG Books. This book was released on 2008 with total page 1427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compilation of material published 1983-2004.
Book Synopsis Concepts and Applications in 3D Seismic Imaging by : Biondo Biondi
Download or read book Concepts and Applications in 3D Seismic Imaging written by Biondo Biondi and published by SEG Books. This book was released on 2007 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a broad and intuitive understanding of seismic-imaging concepts and methods to enable geoscientists to make appropriate decisions during acquisition, processing, imaging, and interpretation, this book shows trends in imaging research and encourages the adoption of new technologies to facilitate the optimal use of these images.
Book Synopsis Seismic Data Analysis by : Özdoğan Yilmaz
Download or read book Seismic Data Analysis written by Özdoğan Yilmaz and published by SEG Books. This book was released on 2001 with total page 2065 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expanding the author's original work on processing to include inversion and interpretation, and including developments in all aspects of conventional processing, this two-volume set is a comprehensive and complete coverage of the modern trends in the seismic industry - from time to depth, from 3D to 4D, from 4D to 4C, and from isotropy to anisotropy.
Book Synopsis Imaging and Velocity Analysis by Target-oriented Wavefield Inversion by : Yaxun Tang
Download or read book Imaging and Velocity Analysis by Target-oriented Wavefield Inversion written by Yaxun Tang and published by Stanford University. This book was released on 2011 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis develops a novel target-oriented inversion framework that uses wavefields as carriers of information to image both low-wavenumber component (a.k.a. background velocity) and high-wavenumber component (a.k.a. reflectivity) of the earth model in complex geological settings, such as subsalt regions. I address the problem of reflectivity imaging with target-oriented wavefield least-squares migration, and the problem of velocity estimation with target-oriented wavefield tomography. Reflectivity images of the subsurface are commonly produced by prestack depth migration. When the overburden is complex and the reflectors are unevenly or insufficiently illuminated, the migration operator alone is inadequate to provide an optimal image. I tackle the problem of distorted illumination in reflectivity imaging by wavefield least-squares migration. I formulate least-squares migration in the image domain and solve it in a target-oriented fashion. In the image-domain formulation, explicit computation of the Hessian operator (the resolution function that measures the illumination deficiency of the imaging system) is the most important and challenging step. I develop a novel method based on phase encoding to efficiently and accurately compute the target-oriented Hessian operator. The Hessian operator is then used to recover the reflectivity by iterative inverse filtering. I regularize the inversion with dip constraints, which naturally incorporate interpreted geological information into the inversion. Accurate imaging of the reflectivity also requires an accurate background velocity model. High-quality velocity model-building in complex geology requires wavefield-based velocity analysis to properly model band-limited wave phenomena. However, the high cost and lack of flexibility of target-oriented model-building prevent this method from being widely used in practice. I overcome the cost and flexibility issues of wavefield-based migration velocity analysis by developing target-oriented wavefield tomography. Target-oriented wavefield tomography is achieved by synthesizing a new data set specifically for velocity analysis. The new data set is generated based on an initial unfocused target image and by a novel application of generalized Born wavefield modeling, which correctly preserves velocity kinematics by modeling both zero and non-zero subsurface-offset-domain images. The new data set can be synthesized for a chosen target region with velocity inaccuracies. The reduced data size and computation domain, therefore, greatly improve the efficiency and flexibility of wavefield tomography, allowing fast and interpretation-driven interactive wavefield-based velocity analysis, where different geological scenarios or hypotheses can be tested in quasi-real time. The proposed target-oriented inversion framework successfully estimates subsalt velocities and recovers subsalt reflectivities from distorted illumination from 2-D synthetic and 3-D field data.
Book Synopsis 3D Seismic Imaging by : Biondo Biondi
Download or read book 3D Seismic Imaging written by Biondo Biondi and published by SEG Books. This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM includes PDF slides for teaching the material in the book and the C3-narrow-azimuth classic data set.
Book Synopsis Land Seismic Case Studies for Near-Surface Modeling and Subsurface Imaging by : Öz Yilmaz
Download or read book Land Seismic Case Studies for Near-Surface Modeling and Subsurface Imaging written by Öz Yilmaz and published by SEG Books. This book was released on 2021-06-30 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for practicing geophysicists, “Land Seismic Case Studies for Near-Surface Modeling and Subsurface Imaging” is a comprehensive guide to understanding and interpreting seismic data. The culmination of land seismic data acquisition and processing projects conducted by the author over the last two decades, this book contains more than nearly 800 figures from worldwide case studies—conducted in both 2D and 3D. Beginning with Chapter 1 on seismic characterization of the near-surface, Chapter 2 presents near-surface modeling by traveltime and full-wave inversion, Chapter 3 presents near-surface modeling by imaging, and then Chapter 4 includes detailed case studies for near-surface modeling. Chapter 5 reviews single- and multichannel signal processing of land seismic data with the key objective of removing surface waves and guided waves that are characterized as coherent linear noise. Uncommon seismic data acquisition methods, including large-offset acquisition in thrust belts to capture the large-amplitude supercritical reflections, swath-line acquisition, and joint PP and SH- SH seismic imaging are highlighted in Chapter 6, and Chapter 7 presents image-based rms velocity estimation and discusses the problem of velocity uncertainty. The final two chapters focus exclusively on case studies: 2D in Chapter 8 and 3D in Chapter 9. An outstanding teaching tool, this book includes analysis workflows containing processing steps designed to solve specific problems. Essential for anyone involved in acquisition, processing, and inversion of seismic data, this volume will become the definitive reference for understanding how the variables in seismic acquisition are directly reflected in the data.
Book Synopsis Illustrated Seismic Processing by : Stephen J. Hill
Download or read book Illustrated Seismic Processing written by Stephen J. Hill and published by SEG Books. This book was released on 2019 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a foundation for understanding the fascinating field of seismic processing. Written for the non-expert, this two-volume introductory text reveals the limitations and potential pitfalls of seismic data, prepares both seismic interpreters and acquisition specialists for working with seismic processing geophysicists, and much more.
Book Synopsis Model-based Depth Imaging by : Stuart Fagin
Download or read book Model-based Depth Imaging written by Stuart Fagin and published by SEG Books. This book was released on 1998 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an informal review of the principle techniques and issues associated with prestack depth imaging. The intended audience for this book would be those seismic interpreters, processors, managers, and explorationists who require basic familiarity with the technology that has so greatly expanded the range of geologic structures that can be successfully imaged. The emphasis of the book is on velocity-model building techniques that are the key to successful depth imaging.
Book Synopsis Imaging by the Wavefront Propagation Method by : Lin Zhang
Download or read book Imaging by the Wavefront Propagation Method written by Lin Zhang and published by . This book was released on 1993 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Expanded Abstracts with Biographies by :
Download or read book Expanded Abstracts with Biographies written by and published by . This book was released on 2001 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sistemic Velocity Estimation Using Prestack Time Migration by : Paul Joseph Fowler
Download or read book Sistemic Velocity Estimation Using Prestack Time Migration written by Paul Joseph Fowler and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geophysical Exploration Technology And Practice: Foreland Thrust Belt In Central And Western China by : Wei Zhang
Download or read book Geophysical Exploration Technology And Practice: Foreland Thrust Belt In Central And Western China written by Wei Zhang and published by World Scientific. This book was released on 2023-11-21 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The compendium summarizes the seismic exploration history, geophysical exploration technology progress, application and exploration results of foreland basins and foreland thrust belts in central and western China.The volume highlights the latest progress and exploration results of theories and methods in foreland thrust belts such as Kuqa in Tarim basin, Yingxiongling in Qaidam basin and Longmenshan in Sichuan basin. The technologies presented, such as wide azimuth and high-density 3D seismic acquisition and processing technology, anisotropic depth domain seismic processing technology, theoretical multi-information comprehensive structural modeling technology, multi-dimensional data fracture detection technology, etc, are widely used in complex areas such as foreland thrust belt.This highly illustrated and readable reference text benefits professionals, researchers, teachers and graduate students majoring in oil and gas exploration and development.
Book Synopsis Relative Fidelity Processing of Seismic Data by : Xiwen Wang
Download or read book Relative Fidelity Processing of Seismic Data written by Xiwen Wang and published by John Wiley & Sons. This book was released on 2017-02-27 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of relative fidelity preservation processing methods and their applications within the oil and gas sector. Four key principles for wide-frequency relative fidelity preservation processing are illustrated throughout the text. Seismic broadband acquisition is the basis for relative fidelity preservation processing and the influence of seismic acquisition on data processing is also analyzed. The methods and principles of Kirchhoff integral migration, one-way wave equation migration and reverse time migration are also introduced and illustrated clearly. Current research of relative amplitude preservation migration algorithms is introduced, and the corresponding numerical results are also shown. RTM (reverse time migration) imaging methods based on GPU/CPU systems for complicated structures are represented. This includes GPU/CPU high performance calculations and its application to seismic exploration, two-way wave extrapolation operator and boundary conditions, imaging conditions and low frequency noise attenuation, and GPU/CPU system based RTM imaging algorithms. Migration velocity model building methods in depth domain for complicated structures are illustrated in this book. The research status and development of velocity model building are introduced. And the impacting factors are also discussed. Several different velocity model building methods are also represented and analyzed. The book also provides the reader with several case studies of field seismic data imaging in different kinds of basins to show the methods used in practice.
Download or read book Petroleum Abstracts written by and published by . This book was released on 1998 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 51st Meeting and Technical Exhibition, International Congress Centre, Berlin (West), 29 May-2 June 1989 by : European Association of Exploration Geophysicists. Meeting
Download or read book 51st Meeting and Technical Exhibition, International Congress Centre, Berlin (West), 29 May-2 June 1989 written by European Association of Exploration Geophysicists. Meeting and published by . This book was released on 1989 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Practical Understanding of Pre- and Poststack Migrations: Prestack by : John C. Bancroft
Download or read book A Practical Understanding of Pre- and Poststack Migrations: Prestack written by John C. Bancroft and published by SEG Books. This book was released on 2007 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is designed to give the practicing geophysicist an understanding of the principles of prestack migration, presented with intuitive reasoning that avoids difficult math. Modeling with common-shot record and a constant-offset section are used to introduce prestack migration. New material in this revised edition of the original 1998 book includes algorithms that lead to and include Claerbout's inversion method.