A study of production/injection data from slim holes and large-diameter wells at the Takigami Geothermal Field, Kyushu, Japan
- Maxwell Federal Div., Inc., San Diego, CA (United States)
- Geo-Hills Associates, Los Altos Hills, CA (United States)
- Idemitsu Kosan Co. Ltd., Tokyo (Japan)
- Idemitsu Oita Geothermal Co. Ltd., Oita (Japan)
Production and injection data from nine slim holes and sixteen large-diameter wells at the Takigami Geothermal Field, Kyushu, Japan were analyzed in order to establish relationships (1) between injectivity and productivity indices, (2) between productivity/injectivity index and borehole diameter, and (3) between discharge capacity of slim holes and large-diameter wells. Results are compared with those from the Oguni and Sumikawa fields. A numerical simulator (WELBOR) was used to model the available discharge rate from Takigami boreholes. The results of numerical modeling indicate that the flow rate of large-diameter geothermal production wells with liquid feedzones can be predicted using data from slim holes. These results also indicate the importance of proper well design.
- 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:
- 446319
- Report Number(s):
- SAND-96-2555; ON: DE97004362; TRN: AHC29706%%25
- Resource Relation:
- Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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