Analysis of energy extraction in the 1995 Hijiori 25-day circulation test
- Stanford Univ., CA (United States)
- NEDO, Tokyo (Japan)
- GERD, Tokyo (Japan)
A 25-day circulation test was carried out in the summer of 1995 to characterize the two-production wells in the deeper reservoir of the Hijiori HDR resource. The test protocol included two stimulations of the injection well and two short step-rate injection tests during the circulation period. The test data showed that the flow in the two production wells originated from both the deeper reservoir at 2200 m and the original upper reservoir at 1800 m. For analysis of thermal extraction, the test data for the two production wells were treated as independent zonal sectors, as described by Kruger and Yamaguchi for the Hijiori 90-day circulation test of the upper reservoir and Kruger and Yamamoto for the Ogachi 151-day circulation test. Temperature cross-sections were calculated across each zonal sector. The two methods provide an estimation of the thermal energy extracted from the two reservoir zonal sectors during the circulation period and an estimate of the reservoir lifetime to the selected abandonment temperature.
- OSTI ID:
- 494391
- Report Number(s):
- CONF-960913-; TRN: 97:002642-0068
- Resource Relation:
- Conference: Annual meeting of the Geothermal Resources Council, Portland, OR (United States), 29 Sep - 2 Oct 1996; Other Information: PBD: 1996; Related Information: Is Part Of Geothermal development in the Pacific rim. Transactions, Volume 20; PB: 886 p.
- Country of Publication:
- United States
- Language:
- English
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