An HDR Experiment at Ogachi, Japan
- Location
- Ogachi, Japan
- Conference
- New Zealand Geothermal Workshop
- Year
- 2000
- Session
- Reservoir Engineering (Measurements, Injection)
- Language
- English
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Abstract
CRIEPI has conducted a Hot Dry Rock (HDR) experiment at Ogachi in northern Japan. In this experiment, using an injection well (OGC-1) which was drilled into granodiorite to a depth of 1000 m, two separate HDR reservoirs were created by the CRSP hydraulic fkacturing method. A production well (OGC-2) was drilled to penetrate the two HDR reservoirs to a depth of 1,100 m. Water circulation tests were conducted between the injection and production wells. In the 1995 circulation test, hot water and steam at 165 "C was produced at a water recovery rate of 25 %. In 1999 a third well (OGC-3) was drilled to increase water recovery and confirm fluid flow in the reservoirs.
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