PERMEABLE FRACTURES IN THE KAKKONDA GRANITE OF WELL WD-1B, JAPAN
- Key words
- Kakkonda, Japan
- Location
- Kakkonda, Japan; Sengan Geothermal Area
- Conference
- Stanford Geothermal Workshop
- Year
- 1999
- Session
- GEOLOGY
- Language
- English
Full text
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Abstract
The Kakkonda Granite (Quaternary intrusion) has some feedpoints, which contribute to the steam production for the Kakkonda geothermal power plant. FMI (Schlumberger's Fullbore Formation MicroImager) log, resistivity log, gamma ray log, spinner log and temperature logs from NEDO*s well WD-1b have supplied information for determination of rock name and have revealed distributions of fractures. In the Kakkonda Granite, the fracture density analyzed from FMI log is far less than the other formations and the strike and dip of permeable fractures is partly different from that of the other formations.
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