Interwell Tracer Analyses of a Hydraulically Fractured Granitic Geothermal Reservoir PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Field experiments using fluorescent dye and radioactive tracers (Br82 and I131) have been employed to characterize a hot, low-matrix permeability, hydraulically-fractured granitic reservoir at depths of 2440 to 2960 m (8000 to 9700 ft). Tracer profiles and residence time distributions have been used to delineate changes in the fracture system, particularly in diagnosing pathological flow patterns and in identifying new injection and production zones. The effectiveness of one- and two-dimensional theoretical dispersion models utilizing single and multiple porous, fractured zones with velocity and formation dependent effects are discussed with respect to actual field data.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Field experiments using fluorescent dye and radioactive tracers (Br82 and I131) have been employed to characterize a hot, low-matrix permeability, hydraulically-fractured granitic reservoir at depths of 2440 to 2960 m (8000 to 9700 ft). Tracer profiles and residence time distributions have been used to delineate changes in the fracture system, particularly in diagnosing pathological flow patterns and in identifying new injection and production zones. The effectiveness of one- and two-dimensional theoretical dispersion models utilizing single and multiple porous, fractured zones with velocity and formation dependent effects are discussed with respect to actual field data.
Author: Jefferson W. Tester
Publisher:
ISBN:
Category : Geothermal reservoirs
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Geothermal engineering
Languages : en
Pages : 650
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Book Description
Author: S. Nemat-Nassar
Publisher: Springer Science & Business Media
ISBN: 9400968841
Category : Science
Languages : en
Pages : 519
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Book Description
Hydraulic fracturing has been and continues to be a major techno logical tool in oil and gas recovery, nuclear and other waste disposal, mining and particularly in-situ coal gasification, and, more recently, in geothermal heat recovery, particularly extracting heat from hot dry rock masses. The understanding of the fracture process under the ac tion of pressurized fluid at various temperatures is of fundamental scientific importance, which requires an adequate description of thermomechanical properties of subsurface rock, fluid-solid interaction effects, as well as degradation of the host rock due to temperature gradients introduced by heat extraction. Considerable progress has been made over the past several years in laboratory experiments, analytical and numerical modeling, and in-situ field studies in various aspects of hydraulic fracturing and geothermal energy extraction, by researchers in the United States and Japan and also elsewhere. However, the results have been scattered throughout the literature. Therefore, the time seemed ripe for bringing together selected researchers from the two countries, as well as observers from other countries, in order to survey the state of the art, exchange scientific information, and establish closer collaboration for further, better coordinated scientific effort in this important area of research and exploration.
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 1740
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Book Description
Author:
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ISBN:
Category :
Languages : en
Pages :
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Book Description
Tracer tests have been an important technique for determining the flow and reservoir characteristics in various rock matrix systems. While the interwell tracer tests are aimed at the characterization of the regions between the wells, single-well injection-backflow tracer tests may be useful tools of preliminary evaluation, before implementing long term interwell tracer tests. This work is concerned with the quantitative evaluation of the tracer return profiles obtained from single well injection-backflow tracer tests. First, two mathematical models of tracer transport through fractures, have been reviewed. These two models are based on two different principles: Taylor Dispersion along the fracture and simultaneous diffusion in and out of the adjacent matrix. Then the governing equations for the transport during the injection-backflow tests have been solved. Finally the results were applied to field data obtained from Raft River and East Mesa geothermal fields. In order to determine the values of the parameters of the models that define the transport mechanisms through fractures a non-linear optimization technique was employed. 26 refs., 10 figs.
Author: B. Zemel
Publisher: Elsevier
ISBN: 0080543146
Category : Science
Languages : en
Pages : 515
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Book Description
This book is concerned with the application of tracers to a wide variety of oil field operations. It provides the necessary nuclear concepts and techniques which are basic to oil field tracer applications. Laboratory and field techniques are explained and illustrated as are the associated regulatory and safety aspects. Within the book, each area of oil field use is considered separately and specific applications of tracers discussed and relevant literature reviewed. The use of non-radioactive tracers is pointed out wherever it is applicable.Due to the nature of this competitive industry, much research is poorly documented, thus Tracers in the Oil Field aims to make the technology more available to current users in the oil field.
Author: Los Alamos National Laboratory
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 348
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Book Description
Author: E. Okandan
Publisher: Springer Science & Business Media
ISBN: 9400936915
Category : Technology & Engineering
Languages : en
Pages : 327
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Book Description
During the oil crisis of 1973, we suddenly became aware that fossil fuel resources are limited and will be exhausted soon if new alternatives are not put into use immediately. Conservation measures and extensive research on new sources of energy has eased the demand on fossil fuels, especially crude oil. Geothermal energy as an alternative; source had its share in this devel opment and electricity producing capacity increased from 700 to 4700 MWe during 1970 to 1985. Geothermal reservoir engineering emerged as an impor tant field in the assessment of geothermal sources. During the 25 years of its development, several areas were identified that needed further at tention for the correct description and interpretation of reservoir be havior. This fact as accepted by all operators is vital for the steady and continuous operation of power plants. During this NATO ASI, a detailed review of theory and field case his tories on geothermal reservoir engineering was presented. In understanding .the reservoir, conceptual models, natural state models, well bore measure ments, transient and tracer testing provide data which are indispensable. They are powerful tools in understanding reservoir behavior provided we know how to interpret them. During lectures the theory and practical applications of these interpretive methods were discussed.
Author: D. Mader
Publisher: Elsevier
ISBN: 0080868843
Category : Technology & Engineering
Languages : en
Pages : 1277
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Book Description
Many aspects of hydraulic proppant fracturing have changed since its innovation in 1947. The main significance of this book is its combination of technical and economical aspects to provide an integrated overview of the various applications of proppants in hydraulic fracturing, and gravel in sand control. The monitoring of fractures and gravel packs by well-logging and seismic techniques is also included.The book's extensive coverage of the subject should be of special interest to reservoir geologists and engineers, production engineers and technologists, and well log analysts.
