Modelling Studies Of The Evolution Of Vapour Dominated Geothermal Systems Download Ebook PDF Epub Online

Author : Irene Pestov
Victoria University of Wellington. Mathematics Department
Publisher :
Release : 1995
Page : 12
Category : Geothermal engineering
ISBN 13 :
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Author :
Publisher :
Release : 1995
Page :
Category :
ISBN 13 :
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Numerical experiments, based on linear stability results, are invoked to model the evolution of two-phase vapor-dominated zones within geothermal systems. A reservoir model with all boundaries impermeable to fluid flow and a uniform heat flux at the bottom boundary is used. The results obtained show that different steady-states are accessible along different quasi-static paths from the same initial vapor-dominated steady-state. Thus, the realization of a steady-state with a two-phase vapor-dominated zone overlying a single-phase hot water region can indicate that the geothermal system undergoes a process of slow cooling. A steady-state with a two-phase vapor-dominated zone overlying a single-phase vapor region can be formed either as a result of slow heating or as a result of a reduction in permeability. A steady-state with an upper vapor-dominated part and a lower liquid-dominated part can occur if permeability of the system has been gradually increased.


Author : M. P. Hochstein
J. Brotheridge
Publisher :
Release : 1995
Page : 275
Category : Geothermal engineering
ISBN 13 : 9780868690087
Description :



Author : Malcomm Grant
Publisher : Elsevier
Release : 2013-02-07
Page : 384
Category : Technology & Engineering
ISBN 13 : 0323152910
Description :


Geothermal Reservoir Engineering offers a comprehensive account of geothermal reservoir engineering and a guide to the state-of-the-art technology, with emphasis on practicality. Topics covered include well completion and warm-up, flow testing, and field monitoring and management. A case study of a geothermal well in New Zealand is also presented. Comprised of 10 chapters, this book opens with an overview of geothermal reservoirs and the development of geothermal reservoir engineering as a discipline. The following chapters focus on conceptual models of geothermal fields; simple models that illustrate some of the processes taking place in geothermal reservoirs under exploitation; measurements in a well from spudding-in up to first discharge; and flow measurement. The next chapter provides a case history of one well in the Broadlands Geothermal Field in New Zealand, with particular reference to its drilling, measurement, discharge, and data analysis/interpretation. The changes that have occurred in exploited geothermal fields are also reviewed. The final chapter considers three major problems of geothermal reservoir engineering: rapid entry of external cooler water, or return of reinjected water, in fractured reservoirs; the effects of exploitation on natural discharges; and subsidence. This monograph serves as both a text for students and a manual for working professionals in the field of geothermal reservoir engineering. It will also be of interest to engineers and scientists of other disciplines.


Author :
Publisher :
Release : 1981-12
Page :
Category : Geothermal engineering
ISBN 13 :
Description :



Author : Jochen Bundschuh
Mario César Suárez A.
Publisher : CRC Press
Release : 2010-07-05
Page : 522
Category : Mathematics
ISBN 13 : 0203848101
Description :


This book provides an introduction to the scientific fundamentals of groundwater and geothermal systems. In a simple and didactic manner the different water and energy problems existing in deformable porous rocks are explained as well as the corresponding theories and the mathematical and numerical tools that lead to modeling and solving them. This


Author : Jochen Bundschuh
Michael Zilberbrand
Publisher : CRC Press
Release : 2011-12-23
Page : 332
Category : Technology & Engineering
ISBN 13 : 0415668107
Description :


Geochemical modeling is an important tool in environmental studies, and in the areas of subsurface and surface hydrology, pedology, water resources management, mining geology, geothermal resources, hydrocarbon geology, and related areas dealing with the exploration and extraction of natural resources. The book fills a gap in the literature through its discussion of geochemical modeling, which simulates the chemical and physical processes affecting the distribution of chemical species in liquid, gas, and solid phases. Geochemical modeling applies to a diversity of subsurface environments, from the vadose zone close to the Earth’s surface, down to deep-seated geothermal reservoirs. This book provides the fundamental thermodynamic concepts of liquid-gas-solid phase systems. It introduces the principal types of geochemical models, such as speciation, reaction-path or forward, inverse- and reactive-transport models, together with examples of the most common codes and the best-practices for constructing geochemical models. The physical laws describing homogeneous and heterogeneous chemical reactions, their kinetics, and the transport of reactive solutes are presented. The partial differential or algebraic equations representing these laws, and the principal numerical methods that allow approximate solutions of these equations that can provide useful solutions to model different geochemical processes, are discussed in detail. Case studies applying geochemical models in different scientific areas and environmental settings, conclude the book. The book is addressed to students, teachers, other professionals, and to the institutions involved in water, geothermal and hydrocarbon resources, mining, and environmental management. The book should prove useful to undergraduate and graduate students, postgraduates, professional geologists and geophysicists, engineers, environmental scientists, soil scientists, hydrochemists, and others interested in water and geochemistry.


Author :
Publisher :
Release : 1993
Page :
Category : Power resources
ISBN 13 :
Description :


Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.


Author : Harry C. Hardee
Publisher :
Release : 1980
Page : 19
Category : Geothermal resources
ISBN 13 :
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Author :
Publisher :
Release : 1979
Page :
Category : Fuel
ISBN 13 :
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Author :
Publisher :
Release : 1980
Page :
Category : Fuel
ISBN 13 :
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Author : Futures Group
National Science Foundation (U.S.)
Publisher :
Release : 1975
Page : 554
Category : Energy policy
ISBN 13 :
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Author : Ardyth M. Simmons
John S. Stuckless
Publisher :
Release : 1984
Page : 194
Category : Geological repositories
ISBN 13 :
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Author :
Publisher :
Release : 1989
Page :
Category : Aeronautics
ISBN 13 :
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Author :
Publisher :
Release : 1979
Page :
Category : Water
ISBN 13 :
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Author : Geological Survey (U.S.)
Publisher :
Release : 1982
Page : 402
Category : Geology
ISBN 13 :
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Author :
Publisher : DIANE Publishing
Release :
Page :
Category :
ISBN 13 : 142896066X
Description :



Author : Geological Survey (U.S.)
Publisher :
Release : 1971
Page :
Category : Geology
ISBN 13 :
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Author :
Publisher :
Release : 1991
Page : 313
Category : Hydrology
ISBN 13 :
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Author :
Publisher :
Release : 1990
Page :
Category : Geothermal resources
ISBN 13 :
Description :