Evolution of pore fluid pressures in a stimulated geothermal reservoir inferred from earthquake focal mechanisms

DOI Web Site Web Site 被引用文献11件 参考文献30件 オープンアクセス
  • Toshiko Terakawa
    Earthquake and Volcano Research Center, Graduate School of Environmental Studies Nagoya University Nagoya Japan

書誌事項

公開日
2014-11-06
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2014gl061908
公開者
American Geophysical Union (AGU)

この論文をさがす

説明

<jats:title>Abstract</jats:title><jats:p>This paper proposes an inversion method to estimate the evolution of pore fluid pressure fields from earthquake focal mechanism solutions. Application of the method to induced seismicity in the Basel enhanced geothermal system in Switzerland shows the evolution of pore fluid pressure in response to fluid injection experiments. The pore fluid pressure in the reservoir was less than the minimum principal stress at each depth, indicating that hydraulic fracturing did not occur during the stimulation. This suggests that seismic events may play an important role in promoting the development of permeable channels, particularly southeast of the borehole where the largest seismic event (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> 2.95) occurred. This is not directly related to a drastic decrease in fault strength at the hypocenter but rather to positive feedback between permeability enhancement and elastic/poroelastic stress loading from slipping interfaces.</jats:p>

収録刊行物

被引用文献 (11)*注記

もっと見る

参考文献 (30)*注記

もっと見る

関連プロジェクト

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ