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Author: Ramil Surhay Oglu Ahmadov
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 195
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Book Description
This dissertation addresses recurrent questions in hydrocarbon reservoir characteri¬zation. In particular, the major focus of this research volume is microtextural characterization of source rock fabric as well as elastic and transport properties of source rocks. Source rocks are one of the most complicated and intriguing natural materials on earth. Their multiphase composition is continually evolving over various scales of length and time, creating the most heterogeneous class of rocks in existence. The heterogeneities are present from the submicroscopic scale to the macroscopic scale, and all contribute to a pronounced anisotropy and large variety of shale macroscopic behavior. Moreover, the effects of the multiphase composition are amplified within organic-rich rocks that contain varying amounts of kerogen. Despite significant research into the properties of kerogen, fundamental questions remain regarding how the intrinsic rock-physics properties of the organic fraction affect the macroscopic properties of host rocks. Because we do not fully understand the elastic properties of either the organic matter or the individual clay minerals present in source rocks, seismic velocity prediction in organic-rich shales remains challenging. Conventional measurements of 'macroscopic' or 'average' properties on core plugs are not sufficient to fully address the degree of property variation within organic-rich rocks. Alternatively, most analyses of organic matter rely on samples that have been isolated by dissolving the rock matrix. The properties of the organic matter before and after such isolation may be different, and all information about sample orientation is lost. In addition, comprehensive characterization of organic-rich rocks has been hindered by several factors: sample preparation is time-consuming, and the nanogranular nature of this rock type makes it difficult to link effective elastic properties to maceral properties, such as elastic moduli, composition, maturity, and quality. These difficulties have prevented us from building large databases, without which we cannot establish the accurate rock-physics models needed for inverting field geophysical data. I approach this issue using atomic-force microscopy based nanoindentation, coupled with scanning electron and confocal laser-scanning microscopy as a tool for visualization and identification of the organic part within shale, and to perform nanoscale elastic-property measurements. First, the microfabric of a set of source rock samples is characterized. The spatial and temporal link between organic matter and the stiff silicate mineral matrix is established, which leads to proposal of alternative Rock Physics modeling approach to organic-rich source rocks. Based on the nanoindentation measurements, I obtain elastic properties of source rock phases and provide several applications of these (nanoindentation-derived) elastic properties within a number of geomechanical problems. Finally, transport properties of various source rock formations are discussed based on comparison to more conventional reservoir rocks.
Author: Ramil Surhay Oglu Ahmadov
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 195
Get Book Here
Book Description
This dissertation addresses recurrent questions in hydrocarbon reservoir characteri¬zation. In particular, the major focus of this research volume is microtextural characterization of source rock fabric as well as elastic and transport properties of source rocks. Source rocks are one of the most complicated and intriguing natural materials on earth. Their multiphase composition is continually evolving over various scales of length and time, creating the most heterogeneous class of rocks in existence. The heterogeneities are present from the submicroscopic scale to the macroscopic scale, and all contribute to a pronounced anisotropy and large variety of shale macroscopic behavior. Moreover, the effects of the multiphase composition are amplified within organic-rich rocks that contain varying amounts of kerogen. Despite significant research into the properties of kerogen, fundamental questions remain regarding how the intrinsic rock-physics properties of the organic fraction affect the macroscopic properties of host rocks. Because we do not fully understand the elastic properties of either the organic matter or the individual clay minerals present in source rocks, seismic velocity prediction in organic-rich shales remains challenging. Conventional measurements of 'macroscopic' or 'average' properties on core plugs are not sufficient to fully address the degree of property variation within organic-rich rocks. Alternatively, most analyses of organic matter rely on samples that have been isolated by dissolving the rock matrix. The properties of the organic matter before and after such isolation may be different, and all information about sample orientation is lost. In addition, comprehensive characterization of organic-rich rocks has been hindered by several factors: sample preparation is time-consuming, and the nanogranular nature of this rock type makes it difficult to link effective elastic properties to maceral properties, such as elastic moduli, composition, maturity, and quality. These difficulties have prevented us from building large databases, without which we cannot establish the accurate rock-physics models needed for inverting field geophysical data. I approach this issue using atomic-force microscopy based nanoindentation, coupled with scanning electron and confocal laser-scanning microscopy as a tool for visualization and identification of the organic part within shale, and to perform nanoscale elastic-property measurements. First, the microfabric of a set of source rock samples is characterized. The spatial and temporal link between organic matter and the stiff silicate mineral matrix is established, which leads to proposal of alternative Rock Physics modeling approach to organic-rich source rocks. Based on the nanoindentation measurements, I obtain elastic properties of source rock phases and provide several applications of these (nanoindentation-derived) elastic properties within a number of geomechanical problems. Finally, transport properties of various source rock formations are discussed based on comparison to more conventional reservoir rocks.
Author: Gary Mavko
Publisher: Cambridge University Press
ISBN: 1108420265
Category : Business & Economics
Languages : en
Pages : 741
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Book Description
Brings together widely scattered theoretical and laboratory rock physics relations critical for modelling and interpretation of geophysical data.
Author: Jing Ba
Publisher: Frontiers Media SA
ISBN: 2889715620
Category : Science
Languages : en
Pages : 359
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Book Description
Author: Reza Rezaee
Publisher: John Wiley & Sons
ISBN: 1119039266
Category : Technology & Engineering
Languages : en
Pages : 417
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Book Description
Provides comprehensive information about the key exploration, development and optimization concepts required for gas shale reservoirs Includes statistics about gas shale resources and countries that have shale gas potential Addresses the challenges that oil and gas industries may confront for gas shale reservoir exploration and development Introduces petrophysical analysis, rock physics, geomechanics and passive seismic methods for gas shale plays Details shale gas environmental issues and challenges, economic consideration for gas shale reservoirs Includes case studies of major producing gas shale formations
Author: Mark D. Zoback
Publisher: Cambridge University Press
ISBN: 1107087074
Category : Business & Economics
Languages : en
Pages : 495
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Book Description
A comprehensive overview of the key geologic, geomechanical and engineering principles that govern the development of unconventional oil and gas reservoirs. Covering hydrocarbon-bearing formations, horizontal drilling, reservoir seismology and environmental impacts, this is an invaluable resource for geologists, geophysicists and reservoir engineers.
Author: Daniel R. Neuville
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501510932
Category : Technology & Engineering
Languages : en
Pages : 1108
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Book Description
Volume 87 of Reviews in Mineralogy and Geochemistry covers fundamental aspects of the nature of silicate melts and the implications for the systems in which they participate, both technological and natural. The contents of this volume may perhaps best be summarized as structure – properties – dynamics. The volume contains syntheses of short and medium range order, structure-property relationships, and computation-based simulations of melt structure. It continues with analyses of the properties (mechanical, diffusive, thermochemical, redox, nucleation, rheological) of melts. The dynamic behavior of melts in magmatic and volcanic systems, is then treated in the context of their behavior in magma mixing, strain localization, frictional melting, magmatic fragmentation, and hot sintering. Finally, the non-magmatic, extraterrestrial and prehistoric roles of melt and glass are presented in their respective contexts.
Author: Tom G. Blenkinsop
Publisher: Springer Science & Business Media
ISBN: 030647543X
Category : Science
Languages : en
Pages : 157
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Book Description
This book is a systematic guide to the recognition and interpretation of deformation microstructures and mechanisms in minerals and rocks at the scale of a thin section. Diagnostic features of microstructures and mechanisms are emphasized, and the subject is extensively illustrated with high-quality color and black and white photomicrographs, and many clear diagrams. After introducing three main classes of deformation microstructures and mechanisms, low- to high-grade deformation is presented in a logical sequence in Chapters 2 to 5. Magmatic/submagmatic deformation, shear sense indicators, and shock microstructures and metamorphism are described in Chapters 6 to 8, which are innovative chapters in a structural geology textbook. The final chapter shows how deformation microstructures and mechanisms can be used quantitatively to understand the behavior of the earth. Recent experimental research on failure criteria, frictional sliding laws, and flow laws is summarized in tables, and palaeopiezometry is discussed. Audience: This book is essential to all practising structural and tectonic geologists who use thin sections, and is an invaluable research tool for advanced undergraduates, postgraduates, lecturers and researchers in structural geology and tectonics.
Author: R.W. Zimmerman
Publisher: Elsevier
ISBN: 0080868878
Category : Technology & Engineering
Languages : en
Pages : 183
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Book Description
This book is a comprehensive treatment of the elastic volumetric response of sandstones to variations in stress. The theory and data presented apply to the deformations that occur, for example, due to withdrawal of fluid from a reservoir, or due to the redistribution of stresses caused by the drilling of a borehole. Although the emphasis is on reservoir-type sandstones, results and methods discussed are also applicable to other porous rocks.Part One concerns the effect of stress on deformation and discusses porous rock compressibility coefficients. Elasticity theory is used to derive relationships between the porous rock compressibility coefficients, the porosity, and the mineral grain compressibility. Theoretical bounds on the compressibility coefficients are derived. The concept of effective stress coefficients is examined, as is the integrated form of the stress-strain relationships. Undrained compression and induced pore pressures are treated within the same general framework. Part One is concluded with a brief, elementary introduction to Biot's theory of poroelasticity. All the results in Part One are illustrated and verified with extensive references to published compressibility data.Part Two deals with the relationship between pore structure and compressibility, and presents methods that permit quantitative prediction of the compressibility coefficients. Two- and three-dimensional models of tubular pores, spheroidal pores, and crack-like "grain boundary" voids are analyzed. A critical review is made of various methods that have been proposed to relate the effective elastic moduli (bulk and shear) of a porous material to its pore structure. Methods for extracting pore aspect ratio distributions from stress-strain data or from acoustic measurements are presented, along with applications to actual sandstone data.Part Three is a brief summary of experimental techniques that are used to measure porous rock compressibilities in the laboratory.The information contained in this volume is of interest to petroleum engineers, specifically those involved with reservoir modeling, petroleum geologists, geotechnical engineers, hydrologists and geophysicists.
Author: Maxwell G. Lay
Publisher:
ISBN:
Category : Travel
Languages : en
Pages : 574
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Book Description
Author: Milton Kanji
Publisher: Springer Nature
ISBN: 3030294773
Category : Science
Languages : en
Pages : 753
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Book Description
This book offers a practical reference guide to soft rock mechanics for engineers and scientists. Written by recognized experts, it will benefit professionals, contractors, academics, researchers and students working on rock engineering projects in the fields of civil engineering, mining and construction engineering. Soft Rock Mechanics and Engineering covers a specific subject of great relevance in Rock Mechanics – and one that is directly connected to the design of geotechnical structures under difficult ground conditions. The book addresses practical issues related to the geomechanical properties of these types of rock masses and their characterization, while also discussing advances regarding in situ investigation, safety, and monitoring of geotechnical structures in soft rocks. Lastly, it presents important case histories involving tunnelling, dam foundations, coal and open pit mines and landslides.
