Download or read book Subsurface Imaging with Reverse Vertical Seismic Profiles written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The reduced spatial coverage limits the extent of the migrated image, precluding an evaluation of the effectiveness of the random receiver spread. The limited nature of the receiver array also caused artifacts resembling migration smiles in the image. These artifacts are partially suppressed by limiting the aperture of the migration, but this also removes dipping reflectors from the image. To maximize the imaging capabilities of the data, a second approach complimenting the GRT method is developed. This approach, termed vector image isochron (VII) migration, removes array artifacts from the image without losing energy from dipping reflectors. This allows artifacts in the conventional image to be identified, aiding interpretation of the GRT images. VII images also show more even illumination than conventional images, although an effect similar to NMO stretching reduces the resolution of the VII image as compared to the GRT image. The VII scheme is an extension of the GRT migration process of Miller et al. (1987), but involves forming an image which depends on the imaged plane orientation, transforming the image based on the array geometry, then finishing the GRT summation over plane orientations. The VII imaging method is derived in both 2D and 3D with the assumption that the ray paths are straight and that at least one of the arrays, source or receiver, is horizontally oriented. The surface array can have any distribution, regular or random. The other array can have any orientation in general, although this thesis assumes that it will be either another surface array or a vertically oriented borehole array. ...
Download or read book Subsurface Imaging with Reverse Vertical Seismic Profiles written by Mary Lee Krasovec and published by . This book was released on 2001 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The reduced spatial coverage limits the extent of the migrated image, precluding an evaluation of the effectiveness of the random receiver spread. The limited nature of the receiver array also caused artifacts resembling migration smiles in the image. These artifacts are partially suppressed by limiting the aperture of the migration, but this also removes dipping reflectors from the image. To maximize the imaging capibilities of the data, a second approach complimenting the GRT method is developed. This approach, termed vector image isochron (VII) migration, removes array artifacts from the image without losing energy from dipping reflectors. This allows artifacts in the conventional image to be identified, aiding interpretation of the GRT images. VII images also show more even illumination than conventional images, although an effect similar to NMO stretching reduces the resolution of the VII image as compared to the GRT image. The VII scheme is an extension of the GRT migration process of Miller et al. (1987), but involves forming an image which depends on the imaged plane orientation, transforming the image based on the array geometry, then finishing the GRT summation over plane orientations. The VII imaging method is derived in both 2D and 3D with the assumption that the ray paths are straight and that at least one of the arrays, source or receiver, is horizontally oriented. The surface array can have any distribution, regular or random. The other array can have any orientation in general, although this thesis assumes that it will be either another surface array or a vertically oriented borehole array. ...
Download or read book Vertical Seismic Profiling written by Bob Adrian Hardage and published by . This book was released on 2000 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardbound. The book is a comprehensive and concise systematic presentation of the technique of Vertical Seismic Profiling for the study of subsurface properties and structure. Compared to the previous editions from 1983 and 1985, the 1999 edition will contain much new material on equipment advances (in the fields of, a.o., multi-level receiver arrays, small diameter receivers, vertical cable arrays, fiber optic cable) and expanded applications (such as, reverse VSP, drill bit source, 3-D VSP imaging, stratigraphic calibration of 3-D seismic images, crosswell profiling, single-well imaging systems). Also, the new book will contain reflections on the industry VSP research climate and the role of the US National laboratories in VSP Research.
Download or read book The Vertical Seismic Profile written by Timothy H. Keho and published by . This book was released on 1986 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reverse Time Imaging in Solid Earth and Exploration Geophysics written by Hua-Wei Zhou and published by Frontiers Media SA. This book was released on 2022-06-28 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vertical Seismic Profiling and Its Exploration Potential written by E.I. Galperin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book is the author's third on the subject of vertical seismic profiling (VSP). Ten years have elapsed since the pUblication of the fIrst book. During this period, VSP has become the principal method of seismic observations in boreholes and the chief method of experimental studies of seismic waves in the real earth. VSP combines borehole studies in the seismic frequency band, well velocity surveys, proximity or aplanatic surveys, all of which previously existed as separate methods. The high effectiveness ofVSP, its great practical value, the express nature and clarity of the results obtained have all contributed towards a very rapid acceptance of the method. In the USSR VSP has been used in an overwhelming majority of areas and is being used increasingly in many foreign countries as well. This has been greatly facilitated by the translation into English and the publication in the U. S. A. by the Society of Exploration Geophysicists of the book Vertical Seismic Profiling (Tulsa, Oklahoma, 1974). As the method has become more familiar, it has attracted growing interest outside the USSR This has been substantiated by the special seminar on VSP (Oklahoma, 1979) which was organized for 22 U. S. companies and universities and presented by the author.
Download or read book Depth Imaging of Foothills Seismic Data written by Canadian Society of Exploration Geophysicists and published by [Calgary] : Canadian Society of Exploration Geophysicists. This book was released on 1999 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describing exploration problems in complex overthrust environments and then developing practical solutions in terms of migration methods and applications, this book conveys heuristic descriptions of mathematical algorithms and provides case history applications from overthrust belts. Examples derived from model and real data sets are provided. This book evolved from a project of the Canadian Society of Exploration Geophysicists Superfund, a fund designed to support exploration geophysics research at Canadian universities. The project's purpose was to study the seismic depth imaging of complex geologic structures in the Canadian Foothills. This book is intended for seismic processors, interpreters, and researchers. It begins with a description of exploration problems in complex overthrust environments and then develops practical solutions in terms of migration methods and applications. The book conveys heuristic descriptions of mathematical algorithms and provides case-history applications from overthrust belts. In addition to conventional poststack and prestack depth-migration approaches, the book examines migration from topography and anisotropic migration methods while providing examples derived from model and real data sets. Because of the increasing interest in Foothills oil and gas exploration, the book should provide valuable information for practitioner and theoretician alike.
Download or read book A Practical Use of Vertical Seismic Profiles written by Bob Adrian Hardage and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Illustrated Seismic Processing written by Stephen J. Hill and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second volume provides a foundation for understanding the vigorous, relevant, and fascinating field of seismic processing, addressing that portion which precedes migration. Written for the non-expert, this second volume of the 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, explains seismic processing operations as a series of solutions to problems, and demonstrates the dependence of a final interpretable seismic volume on its many seismic processing decisions. Although seismic processing is inherently mathematical, this text uses numerous illustrations and real data examples, providing an intuitive understanding of the seismic processing procedures and resorting to an algebra-based argument only on rare occasions. The first volume starts with migration. This second volume addresses pre-migration processing. In combination, these two volumes present seismic processing topics in order reverse of a typical processing sequence. Through this reverse ordering, the reader understands an algorithm's input requirements, providing motivation for understanding the preceding algorithm in the processing sequence.
Download or read book Vertical Seismic Profiling written by Bob Adrian Hardage and published by . This book was released on 1985 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Seismic Exploration written by and published by . This book was released on 2008 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reverse VSP and Crosswell Seismic Imaging at the Savannah River Site written by and published by . This book was released on 1996 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of crosswell and three-component seismic data integrated with well logs have produced information on the distribution of subsurface heterogeneities below the In-Tank Precipitation facility at the Savannah River Site (SRS). The travel time P-wave tomogram and reflection imaging delineate lateral and vertical structural details of the formations. In particular, the high-resolution P-wave tomogram captures a low-velocity zone within the carbonates. This zone is surrounded by reflection events between depths of 150 and 200 ft. in the reflection imaging. The reflections are caused by the acoustic impedance contrast between the low velocity zone of 'soupy' sand mixtures of unconsolidated materials and the more rigid and dense competent surrounded medium. The time-frequency analysis of full waveforms particle velocity identifies guided waves in form of leaky and normal modes at the depths of about 138 to 150 ft. This resulting change in lithology associated with the presence of guided waves is consistent with a velocity low observed in the vertical velocity profile determined from the inversion of three-component seismic data. This low-velocity zone intercepted by the wells H-BOR-34 and H-BOR-50 correlates with the conductive Griffins Landing Member, which is located above the carbonates. The result of the experiments demonstrate that the present high-resolution crosswell seismic measurement technique (using frequencies up to 1500 Hz) meets the resolution requirements to map geological and geotechnical targets in the vicinity of the In-Tank Precipitation facility at the Savannah River Site.
Download or read book Vertical Seismic Profiles written by Marwan Simaan and published by JAI Press(NY). This book was released on 1984 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Well Seismic Surveying written by Jean-Luc Mari and published by Editions TECHNIP. This book was released on 2003 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: CD-ROM is extracted from the Reservoir and Civil Engineering Geophysics.
Download or read book Vertical Seismic Profiling written by M. N. Toksöz and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Interferometry written by Gerard Thomas Schuster and published by Cambridge University Press. This book was released on 2009-05-14 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the theory and practice of seismic interferometry for academic researchers, oil industry professionals and advanced students.
Download or read book Site Characterization Progress Report written by and published by . This book was released on 1991 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
