Geophysical Characterization Of The Effects Of Fractures And Stress On Subsurface Reservoirs

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Geophysical Characterization of the Effects of Fractures and Stress on Subsurface Reservoirs

Author : Xinding Fang (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 271 pages
Book Rating : 4.:/5 (869 download)

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Book Synopsis Geophysical Characterization of the Effects of Fractures and Stress on Subsurface Reservoirs by : Xinding Fang (Ph. D.)

Download or read book Geophysical Characterization of the Effects of Fractures and Stress on Subsurface Reservoirs written by Xinding Fang (Ph. D.) and published by . This book was released on 2013 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the effect of fractures on reservoir characterization and subsurface rock property measurements using seismic data. Based on the scale of a fracture relative to seismic wavelength, we divide the dissertation into two parts: larger scale fractures and microcracks. In the first part, we study the sensitivity of seismic waves and their time-lapse changes in hydraulic fracturing to the geometrical and mechanical properties of fractures that have dimensions comparable to the seismic wavelength. Through our analysis, we give the general seismic response of a fracture with a linear slip boundary and introduce the fracture sensitivity wave equation for optimal time-lapse survey design. Based on the characteristics of scattering from fractures, we develop an approach to determine the fracture properties using scattered seismic waves. The applicability and accuracy of our method is validated through both numerical simulations and laboratory experiments. Application of our approach to the Emilio Field shows that two orthogonal fracture systems exist and the field data results are consistent with well data. In the second part, we study the effects of microcracks and in situ stress on the formation properties measured from borehole sonic logging. Formation property measurements in a borehole could be biased by the borehole stress concentration, which alters the near wellbore formation properties from their original state. To study this problem, we first develop an iterative approach, which combines a rock physics model and a finite-element method, to calculate the stress-dependent elastic properties of the rock around a borehole when it is subjected to an anisotropic stress loading. The validity of this approach is demonstrated through a laboratory experiment on a Berea sandstone sample. We then use the model obtained from the first step and a finite-difference method to simulate the acoustic response in a borehole. We compare our numerical results with published laboratory acoustic wave measurements of the azimuthal velocity variations along a borehole under uniaxial loading and find very good agreement. Our results show that the variation of P-wave velocity versus azimuth is different from the presumed cosine behavior due to the preference of the wavefield to propagate through a higher velocity region.

Applied Concepts in Fractured Reservoirs

Author : John C. Lorenz
Publisher : John Wiley & Sons
ISBN 13 : 1119055989
Total Pages : 502 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Applied Concepts in Fractured Reservoirs by : John C. Lorenz

Download or read book Applied Concepts in Fractured Reservoirs written by John C. Lorenz and published by John Wiley & Sons. This book was released on 2020-01-13 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: A much-needed, precise and practical treatment of a key topic in the energy industry and beyond, Applied Concepts in Fractured Reservoirs is an invaluable reference for those in both industry and academia Authored by renowned experts in the field, this book covers the understanding, evaluation, and effects of fractures in reservoirs. It offers a comprehensive yet practical discussion and description of natural fractures, their origins, characteristics, and effects on hydrocarbon reservoirs. It starts by introducing the reader to basic definitions and classifications of fractures and fractured reservoirs. It then provides an outline for fractured-reservoir characterization and analysis, and goes on to introduce the way fractures impact operational activities. Well organized and clearly illustrated throughout, Applied Concepts in Fractured Reservoirs starts with a section on understanding natural fractures. It looks at the different types, their dimensions, and the mechanics of fracturing rock in extension and shear. The next section provides information on measuring and analyzing fractures in reservoirs. It covers: logging core for fractures; taking, measuring, and analyzing fracture data; new core vs. archived core; CT scans; comparing fracture data from outcrops, core, and logs; and more. The last part examines the effects of natural fractures on reservoirs, including: the permeability behavior of individual fractures and fracture systems; fracture volumetrics; effects of fractures on drilling and coring; and the interaction between natural and hydraulic fractures. Teaches readers to understand and evaluate fractures Compiles and synthesizes various concepts and descriptions scattered in literature and synthesizes them with unpublished oil-field observations and data, along with the authors’ own experience Bridges some of the gaps between reservoir engineers and geologists Provides an invaluable reference for geologists and engineers who need to understand naturally fractured reservoirs in order to efficiently extract hydrocarbons Illustrated in full color throughout Companion volume to the Atlas of Natural and Induced Fractures in Core

Rock Fractures and Fluid Flow

Author : Committee on Fracture Characterization and Fluid Flow
Publisher : National Academies Press
ISBN 13 : 0309563488
Total Pages : 568 pages
Book Rating : 4.3/5 (95 download)

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Book Synopsis Rock Fractures and Fluid Flow by : Committee on Fracture Characterization and Fluid Flow

Download or read book Rock Fractures and Fluid Flow written by Committee on Fracture Characterization and Fluid Flow and published by National Academies Press. This book was released on 1996-09-10 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific understanding of fluid flow in rock fractures--a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storage--has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.

Fracture and In-situ Stress Characterization of Hydrocarbon Reservoirs

Author : Geological Society of London
Publisher : Geological Society of London
ISBN 13 : 9781862391307
Total Pages : 230 pages
Book Rating : 4.3/5 (913 download)

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Book Synopsis Fracture and In-situ Stress Characterization of Hydrocarbon Reservoirs by : Geological Society of London

Download or read book Fracture and In-situ Stress Characterization of Hydrocarbon Reservoirs written by Geological Society of London and published by Geological Society of London. This book was released on 2003 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization, Modeling, Monitoring, and Remediation of Fractured Rock

Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 0309373727
Total Pages : 177 pages
Book Rating : 4.3/5 (93 download)

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Book Synopsis Characterization, Modeling, Monitoring, and Remediation of Fractured Rock by : National Academies of Sciences, Engineering, and Medicine

Download or read book Characterization, Modeling, Monitoring, and Remediation of Fractured Rock written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2021-01-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.

Geologic Analysis of Naturally Fractured Reservoirs

Author : Ronald Nelson
Publisher : Elsevier
ISBN 13 : 0080507298
Total Pages : 353 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Geologic Analysis of Naturally Fractured Reservoirs by : Ronald Nelson

Download or read book Geologic Analysis of Naturally Fractured Reservoirs written by Ronald Nelson and published by Elsevier. This book was released on 2001-08-24 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geologists, engineers, and petrophysicists concerned with hydrocarbon production from naturally fractured reservoirs will find this book a valuable tool for obtaining pertinent rock data to evaluate reserves and optimize well location and performance. Nelson emphasizes geological, petrophysical, and rock mechanics to complement other studies of the subject that use well logging and classical engineering approaches. This well organized, updated edition contains a wealth of field and laboratory data, case histories, and practical advice. - A great how-to-guide for anyone working with fractured or highly anisotropic reservoirs - Provides real-life illustrations through case histories and field and laboratory data

Fractured Reservoirs

Author : Thomas E. Hoak
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Fractured Reservoirs by : Thomas E. Hoak

Download or read book Fractured Reservoirs written by Thomas E. Hoak and published by . This book was released on 1997 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Seismic Fracture Characterization

Author : Enru Liu
Publisher :
ISBN 13 : 9789073834408
Total Pages : 279 pages
Book Rating : 4.8/5 (344 download)

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Book Synopsis Seismic Fracture Characterization by : Enru Liu

Download or read book Seismic Fracture Characterization written by Enru Liu and published by . This book was released on 2012 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last three decades, seismic anisotropy has evolved from a purely academic research topic into applications in the mainstream of applied geophysics. Today, nobody doubts that the earth is anisotropic and most (if not all) hydrocarbon reservoirs are anisotropic. Since shale accounts for 70% of sedimentary basins and fractures exist in all reservoirs, seismic anisotropy may be even more extensive than we think. Taking anisotropy into account in seismic processing has improved the quality of seismic images, even though it makes seismic processing more challenging since additional parameters are needed. At the same time, fracture characterization using the concept of seismic anisotropy has added value in reservoir characterization, reservoir management, and has increased recovery and optimized well locations. This book and the associated course provide an introduction to the fundamental concepts of seismic fracture characterization by introducing seismic anisotropy, equivalent-medium representation theories of fractured rock and methodologies for extracting fracture parameters from seismic data. We focus on practical applications using extensive field data examples. Includes cast studies demonstrating the applicability, workflow and limitations of this technologyContains physical laboratory 3D experiments where fracture distributions are known, a Middle East fractured carbonate reservoir and a fractured tight gas reservoir. Builds discrete fracture network models incorporating all data. These models should not only be geologically consistent but also geophysically and geomechanically consistent, so that the models can be used to forecast the behaviour and performance of fractured reservoirs.

Fluid Flow in Fractured Rocks

Author : Robert W. Zimmerman
Publisher : John Wiley & Sons
ISBN 13 : 1119248027
Total Pages : 293 pages
Book Rating : 4.1/5 (192 download)

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Book Synopsis Fluid Flow in Fractured Rocks by : Robert W. Zimmerman

Download or read book Fluid Flow in Fractured Rocks written by Robert W. Zimmerman and published by John Wiley & Sons. This book was released on 2023-12-19 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: FLUID FLOW IN FRACTURED ROCKS "The definitive treatise on the subject for many years to come" (Prof. Ruben Juanes, MIT) Authoritative textbook that provides a comprehensive and up-to-date introduction to fluid flow in fractured rocks Fluid Flow in Fractured Rocks provides an authoritative introduction to the topic of fluid flow through single rock fractures and fractured rock masses. This book is intended for readers with interests in hydrogeology, hydrology, water resources, structural geology, reservoir engineering, underground waste disposal, or other fields that involve the flow of fluids through fractured rock masses. Classical and established models and data are presented and carefully explained, and recent computational methodologies and results are also covered. Each chapter includes numerous graphs, schematic diagrams and field photographs, an extensive reference list, and a set of problems, thus providing a comprehensive learning experience that is both mathematically rigorous and accessible. Written by two internationally recognized leaders in the field, Fluid Flow in Fractured Rocks includes information on: Nucleation and growth of fractures in rock, with a multiscale characterization of their geometric traits Effect of normal and shear stresses on the transmissivity of a rock fracture and mathematics of fluid flow through a single rock fracture Solute transport in rocks, with quantitative descriptions of advection, molecular diffusion, and dispersion Fluid Flow in Fractured Rocks is an essential resource for researchers and postgraduate students who are interested in the field of fluid flow through fractured rocks. The text is also highly suitable for professionals working in civil, environmental, and petroleum engineering.

Alfabetiseringsutbildning i Norden

Author :
Publisher :
ISBN 13 :
Total Pages : 109 pages
Book Rating : 4.:/5 (77 download)

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Book Synopsis Alfabetiseringsutbildning i Norden by :

Download or read book Alfabetiseringsutbildning i Norden written by and published by . This book was released on with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Static Conceptual Fracture Modeling

Author : Ronald A. Nelson
Publisher : John Wiley & Sons
ISBN 13 : 1119596939
Total Pages : 201 pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis Static Conceptual Fracture Modeling by : Ronald A. Nelson

Download or read book Static Conceptual Fracture Modeling written by Ronald A. Nelson and published by John Wiley & Sons. This book was released on 2019-11-25 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling of flow in naturally fractured reservoirs is quickly becoming mandatory in all phases of oil and gas exploration and production. Creation of a Static Conceptual Fracture Model (SCFM) is needed as input to create flow simulations for today and for prediction of flow into the future. Unfortunately, the computer modelers tasked with constructing the gridded fracture model are often not well versed in natural fracture characterization and are often forced to make quick decisions as to the input required by the software used to create these models. Static Conceptual Fracture Modelling: Preparing for Simulation and Development describes all the fracture and reservoir parameters needed to create the fracture database for effective modelling and how to generate the data and parameter distributions. The material covered in this volume highlights not only natural fracture system quantification and formatting, but also describes best practices for managing technical teams charged with creating the SCFM. This book will become a must on the shelf for all reservoir modelers.

Advances in the Study of Fractured Reservoirs

Author : G.H. Spence
Publisher : Geological Society of London
ISBN 13 : 1862393559
Total Pages : 421 pages
Book Rating : 4.8/5 (623 download)

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Book Synopsis Advances in the Study of Fractured Reservoirs by : G.H. Spence

Download or read book Advances in the Study of Fractured Reservoirs written by G.H. Spence and published by Geological Society of London. This book was released on 2014-08-27 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Naturally fractured reservoirs constitute a substantial percentage of remaining hydrocarbon resources; they create exploration targets in otherwise impermeable rocks, including under-explored crystalline basement; and they can be used as geological stores for anthropogenic carbon dioxide. Their complex behaviour during production has traditionally proved difficult to predict, causing a large degree of uncertainty in reservoir development. The applied study of naturally fractured reservoirs seeks to constrain this uncertainty by developing new understanding, and is necessarily a broad, integrated, interdisciplinary topic. This book addresses some of the challenges and advances in knowledge, approaches, concepts, and methods used to characterize the interplay of rock matrix and fracture networks, relevant to fluid flow and hydrocarbon recovery. Topics include: describing, characterizing and identifying controls on fracture networks from outcrops, cores, geophysical data, digital and numerical models; geomechanical influences on reservoir behaviour; numerical modelling and simulation of fluid flow; and case studies of the exploration and development of carbonate, siliciclastic and metamorphic naturally fractured reservoirs.

Geomechanics, Fluid Dynamics and Well Testing, Applied to Naturally Fractured Carbonate Reservoirs

Author : Nelson Enrique Barros Galvis
Publisher : Springer
ISBN 13 : 3319775014
Total Pages : 166 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Geomechanics, Fluid Dynamics and Well Testing, Applied to Naturally Fractured Carbonate Reservoirs by : Nelson Enrique Barros Galvis

Download or read book Geomechanics, Fluid Dynamics and Well Testing, Applied to Naturally Fractured Carbonate Reservoirs written by Nelson Enrique Barros Galvis and published by Springer. This book was released on 2018-05-02 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents an important step towards a deeper understanding of naturally fractured carbonate reservoirs (NFCRs). It demonstrates the various kinds of discontinuities using geological evidence, mathematical kinematics model and computed tomography and uses this as a basis for proposing a new classification for NFCRs. Additionally, this study takes advantage of rock mechanics theory to illustrate how natural fractures can collapse due to fluid flow and pressure changes in the fractured media. The explanations and mathematical modeling developed in this dissertation can be used as diagnostic tools to predict fluid velocity, fluid flow, tectonic fracture collapse, pressure behavior during reservoir depleting, considering stress-sensitive and non-stress-sensitive, with nonlinear terms in the diffusivity equation applied to NFCRs. Furthermore, the book presents the description of real reservoirs with their field data as the principal goal in the mathematical description of the realistic phenomenology of NFCRs.

Seismic Anisotropy Dependence on Fluids, Fractures, and Stress

Author : Omoboya Olabode Kingsley
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (12 download)

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Book Synopsis Seismic Anisotropy Dependence on Fluids, Fractures, and Stress by : Omoboya Olabode Kingsley

Download or read book Seismic Anisotropy Dependence on Fluids, Fractures, and Stress written by Omoboya Olabode Kingsley and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A major goal of geophysical research is to understand and predict the seismic response of fluids, fractures, and stress in the subsurface. In this dissertation, we explored different forward modeling and field techniques with the goal of quantifying seismic anisotropy and its relationship with subsurface states. This dissertation includes two series of physical modeling experiments as well as analyses of wide-azimuth 3D data from the Williston Basin in North Dakota and the Fort Worth Basin in Texas. In the first set of lab experiments, we explored fluid substitution effects in a synthetic anisotropic medium. We observed the effects of different fluids on wide-azimuth P-wave NMO ellipses from our synthetic composite rock sample. We find that fluid substitution from air to water can increase inherent anisotropies by as much as 50%. We also observe changes in P-wave NMO ellipses as a function of different fluid saturants in the synthetic sample. In the second set of experiments, we varied uniaxial normal stress and measured transit-time and its associated effects on a layered synthetic orthorhombic medium. The experiment was designed to measure the dynamic elastic properties of sedimentary reservoir rocks deposited in layers under stress. Results show a general increase in all measured velocities with stress ranging from 4% to 10%. We also observed anisotropic behavior a priori to both orthorhombic and VTI symmetries in different principal axes of the synthetic sample as uniaxial stress changes. 3D wide-azimuth data from the Ross Field of the Williston Basin in North Dakota is fully processed using conventional techniques. We presented a velocity-based workflow for inverting for the direction and intensity of preferred orientations within the subsurface. We demonstrate a potential for using wide-azimuth P-wave seismic data as a tool for subsurface characterization in shale reservoirs. Lastly, using fully processed wide-azimuth 3D dataset and wells from the Fort Worth Basin in Texas, we presented a workflow that integrated RMO analysis and azimuthally sectored inversions to generate a broad overview of subsurface orientation in the Barnett shale play.

Shale

Author : Thomas Dewers
Publisher : John Wiley & Sons
ISBN 13 : 1119066689
Total Pages : 318 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Shale by : Thomas Dewers

Download or read book Shale written by Thomas Dewers and published by John Wiley & Sons. This book was released on 2019-10-15 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in theories, methods and applications for shale resource use Shale is the dominant rock in the sedimentary record. It is also the subject of increased interest because of the growing contribution of shale oil and gas to energy supplies, as well as the potential use of shale formations for carbon dioxide sequestration and nuclear waste storage. Shale: Subsurface Science and Engineering brings together geoscience and engineering to present the latest models, methods and applications for understanding and exploiting shale formations. Volume highlights include: Review of current knowledge on shale geology Latest shale engineering methods such as horizontal drilling Reservoir management practices for optimized oil and gas field development Examples of economically and environmentally viable methods of hydrocarbon extraction from shale Discussion of issues relating to hydraulic fracking, carbon sequestration, and nuclear waste storage Book Review: I. D. Sasowsky, University of Akron, Ohio, September 2020 issue of CHOICE, CHOICE connect, A publication of the Association of College and Research Libraries, A division of the American Library Association, Connecticut, USA Shale has a long history of use as construction fill and a ceramic precursor. In recent years, its potential as a petroleum reservoir has generated renewed interest and intense scientific investigation. Such work has been significantly aided by the development of instrumentation capable of examining and imaging these very fine-grained materials. This timely multliauthor volume brings together 15 studies covering many facets of the related science. The book is presented in two sections: an overview and a second section emphasizing unconventional oil and gas. Topics covered include shale chemistry, metals content, rock mechanics, borehole stability, modeling, and fluid flow, to name only a few. The introductory chapter (24 pages) is useful and extensively referenced. The lead chapter to the second half of the book, "Characterization of Unconventional Resource Shales," provides a notably detailed analysis supporting a comprehensive production workflow. The book is richly illustrated in full color, featuring high-quality images, graphs, and charts. The extensive index provides depth of access to the volume. This work will be of special interest to a diverse group of investigators moving forward with understanding this fascinating group of rocks. Summing Up: Recommended. Upper-division undergraduates through faculty and professionals.

Applied Concepts in Fractured Reservoirs

Author : John C. Lorenz
Publisher : John Wiley & Sons
ISBN 13 : 1119055962
Total Pages : 232 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Applied Concepts in Fractured Reservoirs by : John C. Lorenz

Download or read book Applied Concepts in Fractured Reservoirs written by John C. Lorenz and published by John Wiley & Sons. This book was released on 2020-01-03 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: A much-needed, precise and practical treatment of a key topic in the energy industry and beyond, Applied Concepts in Fractured Reservoirs is an invaluable reference for those in both industry and academia Authored by renowned experts in the field, this book covers the understanding, evaluation, and effects of fractures in reservoirs. It offers a comprehensive yet practical discussion and description of natural fractures, their origins, characteristics, and effects on hydrocarbon reservoirs. It starts by introducing the reader to basic definitions and classifications of fractures and fractured reservoirs. It then provides an outline for fractured-reservoir characterization and analysis, and goes on to introduce the way fractures impact operational activities. Well organized and clearly illustrated throughout, Applied Concepts in Fractured Reservoirs starts with a section on understanding natural fractures. It looks at the different types, their dimensions, and the mechanics of fracturing rock in extension and shear. The next section provides information on measuring and analyzing fractures in reservoirs. It covers: logging core for fractures; taking, measuring, and analyzing fracture data; new core vs. archived core; CT scans; comparing fracture data from outcrops, core, and logs; and more. The last part examines the effects of natural fractures on reservoirs, including: the permeability behavior of individual fractures and fracture systems; fracture volumetrics; effects of fractures on drilling and coring; and the interaction between natural and hydraulic fractures. Teaches readers to understand and evaluate fractures Compiles and synthesizes various concepts and descriptions scattered in literature and synthesizes them with unpublished oil-field observations and data, along with the authors’ own experience Bridges some of the gaps between reservoir engineers and geologists Provides an invaluable reference for geologists and engineers who need to understand naturally fractured reservoirs in order to efficiently extract hydrocarbons Illustrated in full color throughout Companion volume to the Atlas of Natural and Induced Fractures in Core

CHARACTERIZATION OF IN-SITU STRESS AND PERMEABILITY IN FRACTURED RESERVOIRS.

Author :
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis CHARACTERIZATION OF IN-SITU STRESS AND PERMEABILITY IN FRACTURED RESERVOIRS. by :

Download or read book CHARACTERIZATION OF IN-SITU STRESS AND PERMEABILITY IN FRACTURED RESERVOIRS. written by and published by . This book was released on 2005 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical modeling and field data tests are presented on the Transfer Function/Scattering Index Method for estimating fracture orientation and density in subsurface reservoirs from the ''coda'' or scattered energy in the seismic trace. Azimuthal stacks indicate that scattered energy is enhanced along the fracture strike direction. A transfer function method is used to more effectively indicate fracture orientation. The transfer function method, which involves a comparison of the seismic signature above and below a reservoir interval, effectively eliminates overburden effects and acquisition imprints in the analysis. The transfer function signature is simplified into a scattering index attribute value that gives fracture orientation and spatial variations of the fracture density within a field. The method is applied to two field data sets, a 3-D Ocean Bottom Cable (OBC) seismic data set from an offshore fractured carbonate reservoir in the Adriatic Sea and a 3-D seismic data set from an onshore fractured carbonate field in the Middle East. Scattering index values are computed in both fields at the reservoir level, and the results are compared to borehole breakout data and Formation MicroImager (FMI) logs in nearby wells. In both cases the scattering index results are in very good agreement with the well data. Field data tests and well validation will continue. In the area of technology transfer, we have made presentations of our results to industry groups at MIT technical review meetings, international technical conferences, industry workshops, and numerous exploration and production company visits.