Evaluation of fluid flow in enhanced geothermal reservoirs based on induced microseismic multiplets

Hirokazu Moriya, Hiroaki Niitsuma, Roy Baria

研究成果: Conference contribution

抄録

The relationship between induced microseismic multiplets and fluid injection during hydraulic stimulation of geothermal reservoirs is a possible technique for monitoring fluid flow in fractures and identifying major fluid flow paths in reservoirs. We have identified induced microseismic multiplets in a reservoir zone where preexisting fractures were enhanced by fluid injection to be major fluid flow paths. Analysis of the time intervals of microseismic events shows that the occurrence of multiplet events is quasi-periodic rather than random and is inferred to be related to fluid flow rate in fractures. Our analysis shows that the energy of multiplet events per unit volume of injected fluid and time tends to be larger at the fractures near the outlet zone, where fluid flow rates in fracture are expected to be higher. We derived and evaluated a parameter comprising the event energy, injection fluid volume, and timing of multiplet occurrence that shows promise as an indication of fluid flow rate in fractures.

本文言語English
ホスト出版物のタイトルGeothermal Resources Council Annual Meeting 2010, Geothermal 2010
ページ371-374
ページ数4
出版ステータスPublished - 2010 12 1
イベントGeothermal Resources Council Annual Meeting 2010, Geothermal 2010 - Sacramento, CA, United States
継続期間: 2010 10 242010 10 27

出版物シリーズ

名前Transactions - Geothermal Resources Council
34 1
ISSN(印刷版)0193-5933

Other

OtherGeothermal Resources Council Annual Meeting 2010, Geothermal 2010
国/地域United States
CitySacramento, CA
Period10/10/2410/10/27

ASJC Scopus subject areas

  • 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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