Magnetotelluric exploration of geothermal resources at Takigami area in Japan

Enjang Jaenal Mustopa, Hisashi Jotaki, Hideki Mizunaga, Keisuke Ushijima

研究成果: Contribution to journalConference article査読

2 被引用数 (Scopus)

抄録

A magnetotelluric (MT) survey has been carried out in Takigami geothermal area to determine resistivity structures and the locations of electrical discontinuities that may reflect a possible fault or fracture correlating with promising geothermal reservoir. The MT measurements have been conducted with irregular grid stations covering the Takigami area. The two-dimensional (2-D) inversion results of the MT data show that the resistivity structures in Takigami area are composed mainly of three layers, that is, high resistivity in the first layer overlying low resistivity in the second layer and resistive electrical basement in the third layer. The results are also in a good agreement with electrical resistivity logs, temperature distribution and lost circulation zone during the course of drilling. It is revealed from the interpretation of MT data that the geothermal reservoir of Takigami field is located at two different depths separated by Noine fault zone, which divides the subsurface of the area into eastern and western parts according to the characteristics of resistivity, permeability, temperature and depth of reservoir. The reservoir in the east of Noine fault zone is shallower than that in the west.

本文言語英語
ページ(範囲)245-248
ページ数4
ジャーナルTransactions - Geothermal Resources Council
27
出版ステータス出版済み - 12 1 2003
イベントInternational Collaboration for Geothermal Energy in the Americas - Geothermal Resources Counsil: 2003 Annual Meeting - Morelia, Michoacan, メキシコ
継続期間: 10 12 200310 15 2003

All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 地球物理学

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