Identification of microseismic multiplets in the frequency domain and interpretation of reservoir structure at Basel, Switzerland

Hiroshi Asanuma, Yusuke Kumano, Hirokazu Moriya, Hiroaki Niitsuma, Ulrich Schanz, Markus Häring

研究成果: Conference contribution

抄録

Microseismic multiplets, which are groups of events showing highly similar waveform despite different origin time and magnitude, can be effectively used to determine relative location of the hypocenters with high accuracy. The authors clustered multiplets from microseismic events collected during a hydraulic stimulation in the Deep Heat Mining Project at Basel, Switzerland in 2006. The similarity of waveform was quantitatively evaluated in the frequency domain using the magnitude square coherence function, and this made it possible to cluster the events with different criteria which correlate to different physical phenomena associated with shear slip on fractures. We then interpreted the behavior of each multiplet cluster from the orientation and size of the multiplet seismic structure, fault plane solution, source radius, and hydraulic record. Multiplets which correlate to (a) identical shear slip on a macroscopic single fracture or thin fracture network, (b) repeating slip within a microscopic fracture, and (c) extension of rupture zone on a microscopic fracture, are identified and their response to the stimulation was also interpreted.

本文言語English
ホスト出版物のタイトル78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
出版社Society of Exploration Geophysicists
ページ1451-1455
ページ数5
ISBN(印刷版)9781605607856
出版ステータスPublished - 2018
イベント78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 - Las Vegas, United States
継続期間: 2008 11 92008 11 14

出版物シリーズ

名前78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008

Other

Other78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008
国/地域United States
CityLas Vegas
Period08/11/908/11/14

ASJC Scopus subject areas

  • 地球物理学

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