| Title | An HDR Experiment at Ogachi, Japan |
|---|---|
| Authors | H. Kaieda, K. Kitano, K. Kiho, H. Ito, K. Suzuki, H. Suenaga & Y. Hori |
| Year | 2000 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | |
| 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. |