Development of a geothermal resource in a fractured volcanic formation: Case study of the Sumikawa Geothermal Field, Japan
- Maxwell Federal Div., Inc., San Diego, CA (United States)
- Geo-Hills Associates, Los Altos, CA (United States)
The principal purpose of this case study of the Sumikawa Geothermal Field is to document and to evaluate the use of drilling logs, surface and downhole geophysical measurements, chemical analyses, and pressure transient data for the assessment of a high temperature volcanic geothermal field. The work accomplished during Year 1 of this ongoing program is described in the present report. A brief overview of the Sumikawa Geothermal Field is given. The drilling information and downhole pressure, temperature, and spinner surveys are used to determine feedzone locations, pressures and temperatures. Available injection and production data from both slim holes and large-diameter wells are analyzed to evaluate injectivity/productivity indices and to investigate the variation of discharge rate with borehole diameter. Finally, plans for future work are outlined.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 446314
- Report Number(s):
- SAND-96-2556; ON: DE97004318; TRN: AHC29706%%20
- Resource Relation:
- Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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