Title:

PERMEABLE FRACTURES IN THE KAKKONDA GRANITE OF WELL WD-1B, JAPAN

Authors:

Osamu KATO, Yukihiro SAKAGAWA, Nobuo DOI, Kohei AKAKU, Yasukuni OHKUBO

Key Words:

Kakkonda, Japan

Geo Location:

Kakkonda, Japan; Sengan Geothermal Area

Conference:

Stanford Geothermal Workshop

Year:

1999

Session:

GEOLOGY

Language:

English

File Size:

29KB

View File:

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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