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True Amplitude Kirchhoff Migration
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Book Synopsis True Amplitude Kirchhoff Migration by : Thomas Hertweck
Download or read book True Amplitude Kirchhoff Migration written by Thomas Hertweck and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important task in seismic reflection imaging is to estimate subsurface structures from the prestack data. This means that the reflection events in the recorded data have to be transformed into images in the depth domain, the reflectors. A geometrically appealing approach for the corresponding process is Kirchhoff migration which is based on an integral solution of the wave equation. Applied in its original purely kinematic form, this process provides a structural image of the target region under investigation. However, Kirchhoff migration is also able to handle the amplitude-related aspects of wave propagation, thus allowing to assign physically sound amplitude values to reflector images. In such a true-amplitude migration, the geometrical spreading effects are removed from the input data during the imaging process and, thus, reflector amplitudes become basically a measure of the angle-dependent reflection coefficient. Commencing with the basics of wave propagation and ray theory, a complete description of Kirchhoff migration is presented. By relating the strict mathematical derivation of true-amplitude Kirchhoff migration to clear geometrical concepts, the gap between the originally graphical migration schemes and the nowadays available analytical descriptions based on a stationary-phase evaluation is closed. Further aspects relevant to the correct recovery of amplitudes in depth migration, such as the handling of topography and irregular geometries, are explained in a mathematical as well as in a geometrical manner. Finally, Kirchhoff migration is integrated into a seismic reflection imaging workflow based on the data-driven common-reflection-surface (CRS) stack method.
Book Synopsis Seismic True-amplitude Imaging by : Jörg Schleicher
Download or read book Seismic True-amplitude Imaging written by Jörg Schleicher and published by SEG Books. This book was released on 2007 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a pictorial presentation of the basic principles of Kirchhoff-type imaging and proceeding to a comprehensive treatment of its kinematic and dynamic aspects, this book is a valuable addition for anyone interested in the theory and practices of seismic data processing for imaging and parameter estimation with all its attendant processes.
Book Synopsis Aperture Effects in 2.5-D Kirchhoff Migration by :
Download or read book Aperture Effects in 2.5-D Kirchhoff Migration written by and published by . This book was released on 2002 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Minimum-aperture Kirchhoff Migration with CRS Stack Attributes by : Christoph Jäger
Download or read book Minimum-aperture Kirchhoff Migration with CRS Stack Attributes written by Christoph Jäger and published by . This book was released on 2005 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die Reflexionsseismik ist eine erfolgreiche Methode der Explorationsgeophysik zur Erkundung von Kohlenwasserstoff-Lagerstätten. Ein zentraler Prozess hierbei ist die Migration, die Transformation der reflexionsseismischen Messdaten in ein Abbild des Erduntergrundes. Wird bei dieser Transformation der geometrische Ausbreitungsverlust rückgängig gemacht, so spricht man von einer amplitudenbewahrenden Migration. Die Amplituden im migrierten Abbild sind dann ein Maß für den winkelabhängigen Reflexionskoeffizienten und erlauben Rückschlüsse auf physikalische Eigenschaften der Reflektoren im Untergrund. Somit können benachbarte Gesteinsschichten charakterisiert werden, was wertvolle Informationen für Interpretation und Exploration liefert. In dieser Dissertation befasse ich mich mit einem häufig eingesetzten Migrationsverfahren, der (amplitudenbewahrenden) Kirchhoff-Migration.Reflection seismics plays an important role in the exploration industry for the search of hydrocarbon reservoirs. A central process of the reflection seismic method is migration, the transformation of the recorded and processed seismic field data into an image of the subsurface. In this thesis, I focus on a migration technique that is widely investigated and frequently applied: true-amplitude Kirchhoff migration. The term true-amplitude implies that the effect of geometrical spreading is removed in the migration process and, hence, amplitudes in the final subsurface image become a measure of the angle-dependent reflection coefficient. This allows to study physical properties of reflectors in the earth and, thus, to characterize adjacent rock formations which is crucial for successful interpretation and exploration.As main result of this thesis, I present a new strategy to improve the efficiency as well as the image quality of (true-amplitude) Kirchhoff migration: making use of the kinematic wavefield attributes obtained with the Common-Reflection-Surface (CRS) stack method allows to determine minimum migration apertures. Furthermore, I show how to extend existing migration implementations to correctly handle data recorded with irregular acquisition geometry on a measurement surface with topographic variations as these aspects have a decisive impact on the final amplitudes.Als wichtigstes Resultat dieser Arbeit präsentiere ich ein Verfahren zur Verbesserung von Effizienz und Abbildungsqualität der Kirchhoff-Migration, das auf den kinematischen Wellenfeldattributen basiert, die mittels der Common-Reflection-Surface (CRS) stack Methode gewonnen werden. Diese Wellenfeldattribute erlauben die Bestimmung von minimalen Migrationsaperturen. Des Weiteren demonstriere ich, wie die Kirchhoff-Migration implementiert werden kann um auch solche Daten amplitudenbewahrend verarbeiten zu können, die mit irregulären Messgeometrien und auf topographiebehafteten Messoberflächen aufgezeichnet wurden.
Book Synopsis Encyclopedia of Solid Earth Geophysics by : Harsh Gupta
Download or read book Encyclopedia of Solid Earth Geophysics written by Harsh Gupta and published by Springer Science & Business Media. This book was released on 2011-06-29 with total page 1579 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past few decades have witnessed the growth of the Earth Sciences in the pursuit of knowledge and understanding of the planet that we live on. This development addresses the challenging endeavor to enrich human lives with the bounties of Nature as well as to preserve the planet for the generations to come. Solid Earth Geophysics aspires to define and quantify the internal structure and processes of the Earth in terms of the principles of physics and forms the intrinsic framework, which other allied disciplines utilize for more specific investigations. The first edition of the Encyclopedia of Solid Earth Geophysics was published in 1989 by Van Nostrand Reinhold publishing company. More than two decades later, this new volume, edited by Prof. Harsh K. Gupta, represents a thoroughly revised and expanded reference work. It brings together more than 200 articles covering established and new concepts of Geophysics across the various sub-disciplines such as Gravity, Geodesy, Geomagnetism, Seismology, Seismics, Deep Earth Processes, Plate Tectonics, Thermal Domains, Computational Methods, etc. in a systematic and consistent format and standard. It is an authoritative and current reference source with extraordinary width of scope. It draws its unique strength from the expert contributions of editors and authors across the globe. It is designed to serve as a valuable and cherished source of information for current and future generations of professionals.
Book Synopsis Extended Abstracts Book by : European Association of Geoscientists and Engineers
Download or read book Extended Abstracts Book written by European Association of Geoscientists and Engineers and published by . This book was released on 2001 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Tomography written by G. Nolet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysics Today written by Sergey Fomel and published by SEG Books. This book was released on 2010 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a collection of papers which appear in the September-October 2010 Geophysics special section, written by recognised experts in various areas of exploration geophysics, plus an additional group of papers drawn from Geophysics which address areas beyond those invited articles. The result is a snapshot of the state-of-the-art in the field.
Book Synopsis Seismic Waves in Laterally Inhomogeneous Media by : Ivan Psencik
Download or read book Seismic Waves in Laterally Inhomogeneous Media written by Ivan Psencik and published by Birkhäuser. This book was released on 2013-03-07 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special issue contains contributions presented at the international workshop Seismic Waves in Laterally Inhomogeneous Media V, which was held at the Castle of Zahrádky, Czech Republic, June 5 - 9, 2000. The workshop, which was attended by about 60 seismologists from 16 countries, was devoted mainly to the current state of theoretical and computational means of study of seismic wave propagation in complex structures. The special issue begins with papers dealing with the study and the application of the ray methods. Problems such as coupling of quasi-shear waves or smoothing of models for effective ray computations are dealt with. Applications of the ray methods in seismic exploration are presented. Further, directional wavefield decomposition, phase space, path integral and parabolic equation methods are discussed. Attention is also devoted to attenuation and scattering problems, and to seismic inversion problems.
Book Synopsis Seismic Imaging and Inversion: Volume 1 by : Robert H. Stolt
Download or read book Seismic Imaging and Inversion: Volume 1 written by Robert H. Stolt and published by Cambridge University Press. This book was released on 2012-02-09 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory, and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.
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 2002 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Diffraction by : Tijmen Jan Moser
Download or read book Seismic Diffraction written by Tijmen Jan Moser and published by SEG Books. This book was released on 2016-06-30 with total page 823 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of diffraction imaging to complement the seismic reflection method is rapidly gaining momentum in the oil and gas industry. As the industry moves toward exploiting smaller and more complex conventional reservoirs and extensive new unconventional resource plays, the application of the seismic diffraction method to image sub-wavelength features such as small-scale faults, fractures and stratigraphic pinchouts is expected to increase dramatically over the next few years. “Seismic Diffraction” covers seismic diffraction theory, modeling, observation, and imaging. Papers and discussion include an overview of seismic diffractions, including classic papers which introduced the potential of diffraction phenomena in seismic processing; papers on the forward modeling of seismic diffractions, with an emphasis on the theoretical principles; papers which describe techniques for diffraction mathematical modeling as well as laboratory experiments for the physical modeling of diffractions; key papers dealing with the observation of seismic diffractions, in near-surface-, reservoir-, as well as crustal studies; and key papers on diffraction imaging.
Book Synopsis Seismic Exploration of Hydrocarbons in Heterogeneous Reservoirs by : Jing Ba
Download or read book Seismic Exploration of Hydrocarbons in Heterogeneous Reservoirs written by Jing Ba and published by Elsevier. This book was released on 2014-05-02 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic Exploration of Hydrocarbons in Heterogeneous Reservoirs: New Theories, Methods and Applications is based on the field research conducted over the past decade by an authoring team of five of the world's leading geoscientists. In recent years, the exploration targets of world's oil companies have become more complex. The direct detection of hydrocarbons based on seismic wave data in heterogeneous oil/gas reservoirs has become a hot spot in the research of applied and exploration geophysics. The relevant theories, approaches and applications, which the authors have worked on for years and have established mature technical processes for industrial application, are of significant meaning to the further study and practice of engineers, researchers and students in related area. - Authored by a team of geophysicists in industry and academia with a range of field, instruction, and research experience in hydrocarbon exploration - Nearly 200 figures, photographs, and illustrations aid in the understanding of the fundamental concepts and techniques - Presents the latest research in wave propagation theory, unconventional resources, experimental study, multi-component seismic processing and imaging, rock physics modeling and quantitative seismic interpretation - Sophisticated approach to research systematically forms an industrial work flow for geoscience and engineering practice
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.
Book Synopsis Mathematics of Multidimensional Seismic Imaging, Migration, and Inversion by : N. Bleistein
Download or read book Mathematics of Multidimensional Seismic Imaging, Migration, and Inversion written by N. Bleistein and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 80 years, the oil and gas industry has used seismic methods to construct images and determine physical characteristics of rocks that can yield information about oil and gas bearing structures in the earth. This book presents the different seismic data processing methods, also known as seismic "migration," in a unified mathematical way. The book serves as a bridge between the applied math and geophysics communities by presenting geophysicists with a practical introduction to advanced engineering mathematics, while presenting mathematicians with a window into the world of the mathematically sophisticated geophysicist.
Download or read book Journal of Seismic Exploration written by and published by . This book was released on 2006 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Exploration of the Deep Continental Crust by : Dirk Gajewski
Download or read book Seismic Exploration of the Deep Continental Crust written by Dirk Gajewski and published by Birkhäuser. This book was released on 2012-12-06 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: DEKORP, the German continental reflection seismic program, was the major focus of deep seismic research in Germany in the 1980s and 1990s. The seismic sections provided fundamental new insight into deep geological structure of the European continent and the dynamics of continental formation. They formed the basis for worldwide comparative studies of orogenic structure. The complicated signature of the reflections from the deep crust indicated that new processing and interpretation techniques must be considered to better image the crystalline crust. Results of these efforts, including pre-stack migration, 3-D imaging, shear waves and seismic anisotropy, are presented in this special volume. In part, the articles open the perspective to new and future research. In part, they document research activity triggered by technical and interpretational questions raised by DEKORP field work and profiling results. Many of the presented methods can find immediate application in industrial seismic prospecting.
