| Title | HDR Reservoir Evaluation by Tracer Test with Circulation Condition |
|---|---|
| Authors | Norio Yanagisawa, Isao Matsunaga, Peter Rose, Doone Wyborn |
| Year | 2010 |
| Conference | World Geothermal Congress |
| Keywords | HDR, EGS, Tracer Test, Fluorescein, Reservoir Evaluation, Geochemistry, Optical fiber |
| Abstract | In the Hijiori HDR test field and the Habanero EGS field, tracer tests were carried out with circulation test progress using an optical fiber system and laboratory analysis. At the Habanero site, the breakthough volume was found to be 4000 m3, and the peak volume was found to be 9000 m3 at a 560 m distance from the injection well to the production well. These values were compared to those of the Hijiori site. If a similar fracture pattern can be assumed, the volume is proportional to the cubic of the distance. The Habanero fracture pattern seems to be similar as early stage of Hijiori test site due to the fact that the tracer peak volume of Habanero is 300 times larger than HDR-2 and 90 times larger than HDR-3. With respect to progressing circulation in Hijiori, the volume tended to be smaller at shorter flow paths, but from HDR-1 to HDR-3, the volume became larger. |