Numerical Investigation of Pressure Transient Responses of a Well Penetrating a Deep Geothermal Reservoir at Super-critical Conditions PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Numerical simulations were carried out to predict pressure transients in a hypothetical deep geothermal well which penetrates a reservoir at super-critical conditions. Production at about 4000 m depth was assumed. In many cases, two-phase conditions develop due to high temperature and production-induced pressure decrease. Several cases in which single-phase conditions are maintained were studied in detail. Pressure transients are influenced by the reservoir temperature distribution - in particular, a temperature distribution with subcritical conditions at the well but supercritical conditions farther away causes a characteristic nonlinear pressure response whlch is influenced by the large compressibility and small kinematic viscosity near the critical point.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Numerical simulations were carried out to predict pressure transients in a hypothetical deep geothermal well which penetrates a reservoir at super-critical conditions. Production at about 4000 m depth was assumed. In many cases, two-phase conditions develop due to high temperature and production-induced pressure decrease. Several cases in which single-phase conditions are maintained were studied in detail. Pressure transients are influenced by the reservoir temperature distribution - in particular, a temperature distribution with subcritical conditions at the well but supercritical conditions farther away causes a characteristic nonlinear pressure response whlch is influenced by the large compressibility and small kinematic viscosity near the critical point.
Author: Sadiq J Zarrouk Publisher: Academic Press ISBN: 9780128149461 Category : Languages : en Pages : 420
Book Description
An introduction to the different types of geothermal systems both conventional and non-conventional (EGS) is given, with reference to the relevant well design. The book provides a comprehensive review of geothermal pressure transient analysis methodology, and the similarities and differences with petroleum and ground water well test analysis. Also discussed are the different tests undertaken in geothermal wells during completion testing, output/production testing and the interpretation of the data. Attention is given to the practical aspects of undertaking testing in geothermal wells, some of the common problems encountered and possible solutions. The major content and most novel part of the book focuses on pressure transient analysis by numerical simulation and inverse methods, coupled with the use of the familiar pressure derivative plot. Non-standard geothermal pressure transient behaviors are analysed and interpreted by numerical techniques for cases beyond the limit of existing analytical techniques. Throughout the book, well testing concepts are illustrated with field data from real geothermal wells. A guide to analysis of well test data in geothermal wells, including pressure transient analysis, completion testing and output testing. Provides practical information on how to avoid common issues with data collection in geothermal wells. Uses SI units, converting existing equations and models found in literature to this unit system, instead of oilfield units.
Author: Wentao Feng Publisher: Cuvillier Verlag ISBN: 3736961707 Category : Technology & Engineering Languages : en Pages : 204
Book Description
Hydraulic fracturing in combination with horizontal well is playing a key role in the efficient development of unconventional gas/oil reservoirs and deep geothermal resources. However, the integral operation, especially from the perspective of THM (Thermal-Hydraulic-Mechanic) interactions have not been studied systematically. In this thesis, targeted improvements were achieved through developing a series of mathematical/physical models, and their implementation into the existing numerical tools (FLAC3Dplus and TOUGH2MP-FLAC3D), including: (a) a new thermal module for FLAC3Dplus based entirely on the finite volume method (FVM), which is especially developed for the fracturing process and can also achieve the modeling of gel breaking; (b) a rock damage module of TOUGH2MP-FLAC3D, which also considers the impacts of rock damaging process on evolution of permeability; (c) an in-depth improved FLAC3Dplus simulator that obtains the ability to simulate a 3D fracture propagation with arbitrary orientation. After the corresponding verifications, the improved tools were applied in different case studies to reveal: a) influences of the fluid’s viscosity on the fracturing results in tight sandstone reservoirs; b) the induced seismicity during the fracturing operation and the reactivation of the natural faults; and c) the fracture propagation with arbitrary orientation.
Author: Wilson C Chin Publisher: Elsevier ISBN: 0443241120 Category : Science Languages : en Pages : 439
Book Description
Multiprobe Pressure Testing and Reservoir Characterization: Pressure Transient, Contamination, Liquid and Gas Pumping Analysis provides much-needed three-dimensional pressure transient simulators for job planning and data interpretation in well logging. Discussions cover fundamental concepts, present fluid sampling, pressure transient and contamination analysis; physical concepts and numerical approaches; and multiprobe model formulations and validations. Other sections cover four-probe algorithms, including conventional, overbalanced, and underbalanced drilling applications. The final section addresses triple-probe algorithms, which includes coupled models for pressure and contamination convergence acceleration. Notably, a further chapter explains how the multiprobe tool's focus on characterizing permeability will promote better use of the reservoir as well as assist with energy storage in underground rock, demonstrating how multiprobe tools also facilitate the energy transition from fossil fuels to sustainable geothermal energy. - Reviews present day needs, tool operations, and analysis methods, along with numerous practical examples and applications - Develops a suite of mathematical models, algorithms, and software from first principles - Explains, in detail, how multiprobe pressure logging is superior to using conventional sensors because direct, accurate reservoir characteristics support energy-efficient geothermal designs - Provides an alternative look at the investigation of unconventional reservoirs, not only in terms of hydrocarbon production, but also with carbon and energy storage in mind
Author: Fikri J. Kuchuk Publisher: Elsevier ISBN: 008093174X Category : Technology & Engineering Languages : en Pages : 416
Book Description
This reference presents a comprehensive description of flow through porous media and solutions to pressure diffusion problems in homogenous, layered, and heterogeneous reservoirs. It covers the fundamentals of interpretation techniques for formation tester pressure gradients, and pretests, multiprobe and packer pressure transient tests, including derivative, convolution, and pressure-rate and pressure-pressure deconvolution. Emphasis is placed on the maximum likelihood method that enables one to estimate error variances in pressure data along with the unknown formation parameters. - Serves as a training manual for geologists, petrophysicists, and reservoir engineers on formation and pressure transient testing - Offers interpretation techniques for immediate application in the field - Provides detailed coverage of pretests, multiprobe and packer pressure transient tests, including derivative, convolution, and pressure-rate and pressure-pressure deconvolution
Author: Djebbar Tiab Publisher: Elsevier ISBN: 044326497X Category : Technology & Engineering Languages : en Pages : 1074
Book Description
Pressure Transient Analysis: Pressure Derivative provides focuses on applications of pressure and derivative data for interpretation of pressure transient tests, offering alternatives to costly commercial software. Building from basics, this practical text spans: wells near single and multi-boundary systems, hydraulically fractured wells, naturally fractured reservoirs, interpretation of interference and pulse tests, gas well test analysis (including sources of emissions and decarbonizing strategies, geological sequestration, CCS risks and stress on CCS), multiphase flow, injectivity and falloff tests, rate transient and multi-rate tests, partially penetrated / perforated vertical and slanted wells, and horizontal wells in conventional and unconventional reservoirs.Many techniques and equations presented in this book can be found in the black box of commercial well-test analysis software packages – this practical text unlocks, unpacks, and makes critical, analytical tools accessible to core users. - Delivers an alternative technique to type-curve matching using the loglog analysis - Introduces simple analytical equations used in the step-by-step procedure for analyzing pressure transient tests - Presents common cases encountered by practicing engineers inspired by a robust literature review, boasting over 500 diverse, global sources - Includes (75) solved simulated exercises and field cases, along with (81) unsolved problems (simulated and field cases) to reinforce learning - Supports sustainability and the reduction of carbon emissions by addressing carbon footprints, emissions sources and decarbonizing strategies, carbon capture, storage, and CO2 storage
Author: Charles Sedwick Matthews Publisher: Society of Petroleum Engineers ISBN: Category : Business & Economics Languages : en Pages : 188
Book Description
Pressure Buildup and Flow Tests in Wells presents a comprehensive study of the creation and analysis of transient pressure responses in wells.
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Author: Penelope Kate (Katie) McLean
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Author: Sadiq J Zarrouk
Author: Wentao Feng
Author: Wilson C Chin
Author: Fikri J. Kuchuk
Author: Djebbar Tiab
Author: Charles Sedwick Matthews