An Analysis of the Response of the Raft River Monitor Wells to the 1979 Injection Tests PDF Download
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Author: Susan G. Spencer
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 27
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Author: Susan G. Spencer
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 27
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The geothermal resource for the Department of Energy's (DOE) Raft River Geothermal 5 MWe Power Project is located in a closed ground water basin in southcentral Idaho. Chemical analyses indicate the existence of natural communication along fractures between the geothermal reservoir and the shallower aquifers developed for irrigation. Much of the ground water that is presently used for irrigation is of poor quality. Injection of geothermal fluids at intermediate depths may increase communication between the reservoir and the aquifer, resulting in further degradation of shallow ground water quality over time. Seven monitor wells, ranging in depth from 150 m to 400 m, were drilled to evaluate the potential for this degradation. Monitoring of these wells during two 21-day injection tests at the Raft River Geothermal Injection Well-6 (RRGI-6) indicates two types of response in the shallow aquifer system. First, the water level in Monitor Well-4 (MW-4) increased an average of 0.4 m/week during injection, indicating direct fracture connection between the injection zone and the aquifer penetrated by MW-4. Second, water levels in MW-5, MW-6, and MW-7 showed a step function decrease which coincided with the period of the injection tests. Analyses indicate that this response may be caused by elastic deformation in the aquifer matrix.
Author:
Publisher:
ISBN:
Category : Geothermal engineering
Languages : en
Pages : 750
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 332
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Author: Malcomm Grant
Publisher: Elsevier
ISBN: 0323152910
Category : Technology & Engineering
Languages : en
Pages : 384
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Book 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: Herbert Simon Stephens
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 392
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 932
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1182
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1040
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Author:
Publisher:
ISBN:
Category : Geothermal engineering
Languages : en
Pages : 532
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