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Application Of Thermal Depletion Model To Geothermal Reservoirs With Fracture And Pore Permeability
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Book Synopsis Application of Thermal Depletion Model to Geothermal Reservoirs with Fracture and Pore Permeability by :
Download or read book Application of Thermal Depletion Model to Geothermal Reservoirs with Fracture and Pore Permeability written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: If reinjection and production wells intersect connected fractures, it is expected that reinjected fluid would cool the production well much sooner than would be predicted from calculations of flow in a porous medium. A method for calculating how much sooner that cooling will occur was developed. Basic assumptions of the method are presented, and possible application to the Salton Sea Geothermal Field, the Raft River System, and to reinjection of supersaturated fluids is discussed. (JGB).
Book Synopsis Application of Thermal Depletion Model to Geothermal Reservoirs with Fracture and Pore Permeability by : P. W. Kasameyer
Download or read book Application of Thermal Depletion Model to Geothermal Reservoirs with Fracture and Pore Permeability written by P. W. Kasameyer and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Depletion of a Geothermal Reservoir with Both Fracture and Pore Permeability by :
Download or read book Thermal Depletion of a Geothermal Reservoir with Both Fracture and Pore Permeability written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for estimating the useful lifetime of a reservoir in porous rock where the injection and production wells intersect a fracture system is presented. Equations were derived for the pore-fluid and fracture-fluid temperatures averaged over large regions of the geothermal field. Problems such as incomplete areal sweep and interfingering of cool and hot fluids are ignored. Approximate equations relating average temperatures to the heat flowing from rock to fluid were developed, and their use is justified by comparing the results with solutions of the exact equations. The equations for the temperature decline can be solved quickly. In the model, fractures are characterized by three parameters: aperture w, permeability k/sub fr/, and spacings between fractures D. For certain values of these parameters, cool reinjected fluid in fractures may reach the production wells long before all the warm pore fluid has been tapped, shortening the useful lifetime of the field. The traditional (and important) problems of reservoir engineering, flow rate determination, drawdown, sweep patterns, etc. were ignored. Thus the results are most useful in providing a correction factor which can be applied to lifetime estimates obtained from a detailed simulation of a field assuming porous rock. That correction factor is plotted for clean fractures (k/sub fr/ = w2/12) as a function of w and D for several lifetime ranges. Small-scale fractures seen in cores from the Salton Sea Geothermal Field are too closely spaced to reduce lifetime estimates. However, large-scale fault systems exist within that field, and they are attractive drilling targets because they produce large flow rates. If large scale faults communicate between injection and production wells, they may reduce the useful lifetime of those wells.
Book Synopsis Thermal Depletion of a Geothermal Reservoir with Both Fracture and Por Permeability by : P. W. Kasameyer
Download or read book Thermal Depletion of a Geothermal Reservoir with Both Fracture and Por Permeability written by P. W. Kasameyer and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Energy Research and Development Administration. Technical Information Center Publisher : ISBN 13 : Total Pages :1066 pages Book Rating :4.3/5 (129 download)
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration. Technical Information Center
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geothermal Energy Update written by and published by . This book was released on 1976 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1978 with total page 1780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Reservoir Engineering by : Malcolm Alister Grant
Download or read book Geothermal Reservoir Engineering written by Malcolm Alister Grant and published by Academic Press. This book was released on 2011-04-01 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: As nations alike struggle to diversify and secure their power portfolios, geothermal energy, the essentially limitless heat emanating from the earth itself, is being harnessed at an unprecedented rate. For the last 25 years, engineers around the world tasked with taming this raw power have used Geothermal Reservoir Engineering as both a training manual and a professional reference. This long-awaited second edition of Geothermal Reservoir Engineering is a practical guide to the issues and tasks geothermal engineers encounter in the course of their daily jobs. The book focuses particularly on the evaluation of potential sites and provides detailed guidance on the field management of the power plants built on them. With over 100 pages of new material informed by the breakthroughs of the last 25 years, Geothermal Reservoir Engineering remains the only training tool and professional reference dedicated to advising both new and experienced geothermal reservoir engineers. - The only resource available to help geothermal professionals make smart choices in field site selection and reservoir management - Practical focus eschews theory and basics- getting right to the heart of the important issues encountered in the field - Updates include coverage of advances in EGS (enhanced geothermal systems), well stimulation, well modeling, extensive field histories and preparing data for reservoir simulation - Case studies provide cautionary tales and best practices that can only be imparted by a seasoned expert
Book Synopsis Hot Dry Rock Geothermal Reservoir Model Development at Los Alamos by : Bruce A. Robinson
Download or read book Hot Dry Rock Geothermal Reservoir Model Development at Los Alamos written by Bruce A. Robinson and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hot Dry Rock Geothermal Reservoir Model Development at Los Alamos by :
Download or read book Hot Dry Rock Geothermal Reservoir Model Development at Los Alamos written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete fracture and continuum models are being developed to simulate Hot Dry Rock (HDR) geothermal reservoirs. The discrete fracture model is a two-dimensional steady state simulator of fluid flow and tracer transport in a fracture network which is generated from assumed statistical properties of the fractures. The model's strength lies in its ability to compute the steady state pressure drop and tracer response in a realistic network of interconnected fractures. The continuum approach models fracture behavior by treating permeability and porosity as functions of temperature and effective stress. With this model it is practical to model transient behavior as well as the coupled processes of fluid flow, heat transfer, and stress effects in a three-dimensional system. The model capabilities being developed will also have applications in conventional geothermal systems undergoing reinjection and in fractured geothermal reservoirs in general. 15 refs., 7 figs.
Book Synopsis Development of coupled THM models for reservoir stimulation and geo-energy production with supercritical CO2 as working fluid by : Jianxing Liao
Download or read book Development of coupled THM models for reservoir stimulation and geo-energy production with supercritical CO2 as working fluid written by Jianxing Liao and published by Cuvillier Verlag. This book was released on 2020-07-28 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, two specific numerical models have been developed to address the issues associated with utilization of supercritical CO2, like fracture creation, proppant placement and fracture closure in unconventional gas reservoirs, reservoir stimulation, heat production and CO2 sequestration in deep geothermal reservoirs, respectively. In unconventional gas reservoir, the model consisting of classic fracture model, proppant transport model as well as temperature-sensitive fracturing fluids (CO2, thickened CO2 and guar gum) has been integrated into the popular THM coupled framework (TOUGH2MP-FLAC3D), which has the ability to simulate single fracture propagation driven by different fracturing fluids in non-isothermal condition. To characterize the fracture network propagation and internal multi fluids behavior in deep geothermal reservoirs, an anisotropic permeability model on the foundation of the continuum anisotropic damage model has been developed and integrated into the popular THM coupled framework (TOUGH2MP-FLAC3D) as well. This model has the potential to simulate the reservoir stimulation and heat extraction based on a CO2-EGS concept.
Book Synopsis Geothermal Energy by : United States. Dept. of Energy. Division of Geothermal Energy
Download or read book Geothermal Energy written by United States. Dept. of Energy. Division of Geothermal Energy and published by . This book was released on 1977 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation Into Fracture Network Permeability Evolution and Geothermal Reservoir Deformation in Response to Hydraulic Stimulation, Utilizing Coupled Thermo-hydro-mechanical Modeling by : Stefano Benato
Download or read book Investigation Into Fracture Network Permeability Evolution and Geothermal Reservoir Deformation in Response to Hydraulic Stimulation, Utilizing Coupled Thermo-hydro-mechanical Modeling written by Stefano Benato and published by . This book was released on 2014 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of hydraulic stimulations aimed at enhancing reservoir fracture-permeability were carried out in Desert Peak geothermal well 27-15 from September 2010 to March 2013. Fracture-permeability is controlled by the combined influence of induced thermal (T), hydrologic (H), and mechanical (M) processes, also known as THM. A hydro-mechanical (FLAC3D) model first, and a dual-porosity thermo-hydro-mechanical (TFReact) model second, are implemented to test if the proposed conceptual model is generally able to reproduce observations from the stimulation treatment. Numerical simulations are performed to determine: a) pore pressure diffusion and stress field modifications, b) development of mechanical deformation, and, above all c) relative impact of thermo-mechanical vs. shear deformation on reservoir permeability evolution. Both FLAC3D and TFReact coupled models display an evident cause-effect relation between stimulation of either the shallow or the extended intervals and shear deformation on a deep known structural feature, the STF ("Shearing Target Fault" - where most of the induced microseismicity is observed). Injection-induced thermo-mechanical and hydro-mechanical processes are found to govern permeability enhancement during stimulation of the shallow interval in well 27-15. Conversely, induced shear failure processes developing on a larger structural feature (STF) seem to control most of the permeability gain produced during the well 27-15 extended interval stimulation. Distinctive signatures at the well-head (pressure curve) are shown by the different permeability-change processes, and this is confirmed and matched by coupled THM simulation results.
Book Synopsis Physical Model Studies of Explosion-Fractured Geothermal Reservoirs by :
Download or read book Physical Model Studies of Explosion-Fractured Geothermal Reservoirs written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Large scale utilization of geothermal energy will require means for enhanced energy extraction from geothermal reservoirs since the higher quality hydrothermal resources adequate for commercial electricity generation represent only a small fraction of the estimated resource base. Technologies are being developed for artificial fracturing of hydrothermal and dry hot rock geothermal resources to obtain adequate permeability for water circulation and to expose new rock surface area. Non-isothermal processes such as in-place boiling or artificial circulation of cooler fluids can be used to extract the energy from the fractured formation. To evaluate non-isothermal heat transfer processes, physical model studies were conducted in the Stanford Geothermal Program fractured-rock reservoir model capable of operating at a maximum pressure of 800 psig at 500oF. The 17-ft3 physical model has been described previously [Hunsbedt, Kruger, and London (1975), Hunsbedt (1975), and Hunsbedt, Kruger and London (1976)]. A summary of the characteristics of the relatively large fracture-permeability rock systems tested in the model are summarized in Table 1. The porosity and permeability characteristics of these systems resembled those of fracture-stimulated ones created by high-energy explosives. 1 tab., 4 refs., 2 figs.
Book Synopsis Utilization of Thermal Potential of Abandoned Wells by : Younes Noorollahi
Download or read book Utilization of Thermal Potential of Abandoned Wells written by Younes Noorollahi and published by Academic Press. This book was released on 2022-03-30 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Utilization of Thermal Potential of Abandoned Wells: Fundamentals, Applications and Research is a lucid treatment of the fundamental concepts related to the energy harvesting of abandoned wells. The book provides a journey through recent technological developments to harvest energy from abandoned geothermal wells and allows the reader to view the process from a thermodynamic and numerical modeling perspective. Various applications and future prospects are also discussed to help inform reader's future work and research. Students, researchers and engineers will gain a thorough understanding on how to harvest energy from abandoned geothermal wells, particularly to make sound thermodynamic and economic evaluations. System designers and others engaged in the energy sector will understand how to design and choose the most appropriate technology, how to determine its efficiency, monitor the facility, and how to make informed physical and economical decisions for necessary improvements and environmental assessments. - Logically works through fundamentals, with various examples throughout - Provides instruction to simulate thermodynamic models and design efficient systems - Presents feasibility studies and applications
Book Synopsis Fractures in Geothermal Reservoirs by : Geothermal Resources Council
Download or read book Fractures in Geothermal Reservoirs written by Geothermal Resources Council and published by . This book was released on 1982 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petroleum Abstracts written by and published by . This book was released on 1986 with total page 1674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
