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Reservoir Geomechanics

Reservoir Geomechanics PDF

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Author: Mark D. Zoback
Publisher: Cambridge University Press
ISBN: 0521146194
Size: 54.35 MB
Format: PDF, ePub, Mobi
Category : Business & Economics
Languages : en
Pages : 449
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Unconventional Reservoir Geomechanics

Unconventional Reservoir Geomechanics PDF

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Author: Mark D. Zoback
Publisher: Cambridge University Press
ISBN: 1107087074
Size: 36.36 MB
Format: PDF, ePub, Docs
Category : Business & Economics
Languages : en
Pages : 400
View: 7164


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.

Theoretische Bodenmechanik

Theoretische Bodenmechanik PDF

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Author: Karl Terzaghi
Publisher: Springer-Verlag
ISBN: 3642532446
Size: 62.59 MB
Format: PDF, ePub, Docs
Category : Technology & Engineering
Languages : de
Pages : 506
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2 nung der durch Änderungen in der Belastung und in den Entwässe rungsbedingungen verursachten Wirkungen meist nur sehr gering sind. Diese Feststellung gilt im besonderen Maße für alle jene Auf gaben, die sich mit der Wirkung des strömenden Wasser befassen, weil hier untergeordnete Abweichungen in der Schichtung, die durch Probebohrungen nicht aufgeschlossen werden, von großem Einfluß sein können. Aus diesem Grunde unterscheidet sich die Anwendung der theoretischen Bodenmechanik auf den Erd- und Grundbau ganz wesentlich von der Anwendung der technischen Mechanik auf den Stahl-, Holz- und Massivbau. Die elastischen Größen der Baustoffe Stahl oder Stahlbeton sind nur wenig veränderlich, und die Gesetze der angewandten Mechanik können für die praktische Anwendung ohne Einschränkung übertragen werden. Demgegenüber stellen die theoretischen Untersuchungen in der Bodenmechanik nur Arbeits hypothesen dar, weil unsere Kenntnisse über die mittleren physikalischen Eigenschaften des Untergrundes und über den Verlauf der einzelnen Schichtgrenzen stets unvollkommen und sogar oft äußerst unzuläng lich sind. Vom praktischen Standpunkt aus gesehen, sind die in der Bodenmechanik entwickelten Arbeitshypothesen jedoch ebenso an wendbar wie die theoretische Festigkeitslehre auf andere Zweige des Bauingenieurwesens. Wenn der Ingenieur sich der in den grundlegen den Annahmen enthaltenen Unsicherheiten bewußt ist, dann ist er auch imstande, die Art und die Bedeutung der Unterschiede zu er kennen, die zwischen der Wirklichkeit und seiner Vorstellung über die Bodenverhältnisse bestehen.

Geomechanics In Reservoir Simulation

Geomechanics in Reservoir Simulation PDF

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Author: Pascal Longuemare
Publisher: Editions TECHNIP
ISBN: 9782710808336
Size: 42.63 MB
Format: PDF, Mobi
Category : Engineering geology
Languages : en
Pages : 599
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Unconventional Reservoir Geomechanics

Unconventional Reservoir Geomechanics PDF

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Author: Jishan Liu
Publisher: Gulf Professional Publishing
ISBN: 9780128162156
Size: 57.92 MB
Format: PDF, Mobi
Category :
Languages : en
Pages : 430
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Conventional geomechanics cannot provide suitable modes of behavior and performance for today's unconventional reservoirs such as the evolution of porosity-permeability relationships with multiphysics coupled effects, which ultimately help determine production rates. Unconventional Reservoir Geomechanics delivers a reference that discusses a variety of approaches tailored in developing geomechanical models and provides a smarter tool to predict hydrocarbon extraction specifically for unconventional reservoirs. Starting with a full explanation on a more unified theoretical framework discussing permeability characterization, the authors advance to offer a full range of new modelling solutions followed by a series of lab-scale and field-scale applications to match the history-verified models, bridging a gap for engineers to fully understand the interactions of multiple processes in field scales from theory to practice. Going a step further, other applications such as CO2 sequestration in coal seam or shale gas reservoirs are explained to illustrate how unconventional reservoir geomechanics can be extended to solve related and even more complex challenges. Combining both theoretical and practical models backed by data, Unconventional Reservoir Geomechanics gives reservoir engineers a smarter and more sophisticated tool to approach today's more complex geomechanical modeling challenges. Provides a foundation of solutions for the extraction of unconventional resources and other related areas Introduces a completely new theoretical framework of coupled multi-spatial and multi-temporal multi-physics in rocks with significant contracts of physical properties among components Focuses on understanding and inclusion of four characteristics of unconventional rocks with applications to areas such as shale gas, coal seam, and CO2 sequestration

Reservoir Geomechanics

Reservoir Geomechanics PDF

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Author:
Publisher:
ISBN: 9789386372765
Size: 68.59 MB
Format: PDF, ePub
Category :
Languages : en
Pages : 320
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Use Of Streamline Simulation In Large Scale Reservoir Geomechanical Modeling Of Reservoirs

Use of Streamline Simulation in Large Scale Reservoir geomechanical Modeling of Reservoirs PDF

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Author: Behrooz Koohmareh Hosseini
Publisher:
ISBN:
Size: 44.98 MB
Format: PDF, Mobi
Category : Hydrocarbons
Languages : en
Pages : 240
View: 3576


The increasing demand for hydrocarbons and decreasing reserves have created the necessity to produce oil and gas more efficiently and economically. Increasingly, oil and gas companies are focusing on unconventional hydrocarbons; oil sands, shales and CBM. For this class of reservoir materials, the geomechanical response of the reservoir can play an important role in the recovery process. For naturally fractured, stress sensitive reservoirs or thermal recovery processes, geomechanical processes play an even greater role in efficient, economic recovery. For simulations of these processes, most research efforts have been focused on reservoir geomechanical simulations using conventional reservoir simulators coupled to geomechanical codes. While coupled reservoir-geomechanics modeling has been recently widely studied in the literature, there is no applicable methodology implemented or proposed to mitigate the challenging computational cost involved with the inclusion of geomechanics in large multimillion-cell reservoirs. Past studies so far have focused on different coupling schemes, but not on the efficient and robust simulation workflows. This research was conducted with the aim of development and application of various different strategies to include geomechanics into reservoir simulation workflows in large scale reservoirs and in a timely fashion process. The research was performed to allow the future simulators to perform high resolution reservoir-geomechanical simulations in a large scale (near field and far field) with long simulation time windows and lowest computational cost. Initially, analytical proxies were developed and recommending for implementation in lieu of complex reservoir simulations. The analytical model was for prediction of heavy oil geomechanical responses everywhere in the reservoir. The model adopted the use of the mathematical domain decomposition technique and a novel temperature front tracking developed in the very early stage of the research. As opposed to classical analytical models, the proxy predicted reservoir flow and mechanical behavior (on a synthetic case geometry with real hydraulic data) everywhere in the reservoir and in dynamic and transient flow regimes. Subsequent research was aimed at reservoir-geomechanics coupled model order reduction by use of a numerical proxy. The proxy took advantage of streamline linear space behavior and power in decomposition of the reservoir domain into sub-systems (delineation/drainage areas). The combination of localization and linearization allowed predicting both mechanical and fluid flow responses of the reservoir with only solving the pressure equation in Cartesian underlying 3D grids and the solution of saturation transport equation along only one streamline. Following this, a streamline-based reservoir-geomechanics coupling was proposed and was implemented within a Fortran-C++ based platform. The new developed technique was compared in terms of computational cost and results accuracy with the conventional hydromechanical coupling strategy that was developed on a C++ based platform by use of collocated FV-FEM discretization scheme. One of the final stages of the research explored different streamline-based reservoir-geomechanics coupling strategies for full-field reservoir simulations. Various coupling strategies including sequential coupling schemes and a semi-fully coupling scheme to embed geomechanics into streamline simulation workflow was developed and performed. Numerical software with advanced GUI was coded on QT programming language (C++ based) developed to couple mechanical simulator to streamline simulation engine. While streamline simulations were the center of the research, the last stage of research was conducted on numerical and physical stability, convergence and material balance errors of SL-based reservoir-geomechanics class of couplings. The results provided a solid foundation for proper selection of time-steps in SL-based coupling to ensure a numerically stable and physically robust hydromechanical simulation. As a result we showed that use of streamline simulation in both proxy forms and simulator forms have significant added value in full-field reservoir-geomechanics simulations.

Production Induced Changes In Reservoir Geomechanics

Production induced Changes in Reservoir Geomechanics PDF

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Author: Sunday O. Amoyedo
Publisher:
ISBN:
Size: 21.13 MB
Format: PDF, Mobi
Category : Oil reservoir engineering
Languages : en
Pages : 300
View: 2477



Coupled Chemo Mechanical Processes In Reservoir Geomechanics

Coupled Chemo mechanical Processes in Reservoir Geomechanics PDF

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Author: Igor Shovkun
Publisher:
ISBN:
Size: 77.63 MB
Format: PDF, ePub, Mobi
Category :
Languages : en
Pages : 354
View: 4761


Reservoir geomechanics investigates the implications of rock deformation, strain localization, and failure for completion and production of subsurface energy reservoirs. For example, effective hydraulic fracture placement and reservoir pressure management are among the most important applications for maximizing hydrocarbon production. The correct use of these applications requires understanding the interaction of fluid flow and rock deformations. In the past a considerable amount of effort has been made to describe the role of poroelastic and thermal effects in geomechanics. However, a number of chemical processes that commonly occur in reservoir engineering have been disregarded in reservoir geomechanics despite their significant effect on the mechanical behavior of rocks and, therefore, fluid flow. This dissertation focuses on the mechanical effects of two particular chemical processes: gas-desorption from organic-rich rocks and mineral dissolution in carbonate-rich formations. The methods employ a combination of laboratory studies, field data analysis, and numerical simulations at various length scales. The following conclusions are the results of this work: (1) the introduced numerical model for fluid flow with effects of gas sorption and shear-failure-impaired permeability captures the complex permeability evolution during gas production in coal reservoirs; the simulation results also indicate the presence non-negligible sorption stresses in shale reservoirs, (2) mineral dissolution of mineralized fractures, similar to pore pressure depletion or thermal cooling/heating can increase stress anisotropy, which can reactivate critically-oriented natural fractures; in-situ stress chemical manipulation can be used advantageously to enlarge the stimulated reservoir volume, (3) semicircular bending experiments on acidized rock samples show that non-planar fractures follow high porosity regions and large pores, and that fracture toughness correlates well with local porosity. Numerical modeling based on the Phase-Field approach shows that a direct relationship between fracture toughness and porosity permits replicating fracture stress intensity at initiation and non-planar fracture propagation patterns observed in experiments, and (4) numerical simulations based on a novel reactive fluid flow model coupled with geomechanics show that mineral dissolution (i) lower fracture breakdown pressure, (ii) can bridge a transition from a toughness-dominated regime to uncontrolled fracture propagation at constant injection pressures, and (iii) can increase fracture complexity by facilitating propagation of stalled fracture branches. The understanding of these chemo-mechanical coupled processes is critical for safe and effective injection of CO2 and reactive fluids in the subsurface, such as in hydraulic fracturing, deep geothermal energy, and carbon geological sequestration applications.

Reservoir Geomechanics And Casing Stability X1 3area Daqing Oilfield

Reservoir Geomechanics and Casing Stability  X1 3Area  Daqing Oilfield PDF

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Author: Hongxue Han
Publisher:
ISBN:
Size: 72.21 MB
Format: PDF, Mobi
Category :
Languages : en
Pages :
View: 3483



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