Fracture characterization by using resonance of penny-shaped fluid-filled crack model in Australian HDR field - Initial results

Shin Ito, Kazuo Hayashi, Hideshi Kaieda, Yasuhira Aoyagi

研究成果: Conference article査読

抄録

Fracture characterization was attempted using the pennyshaped fluid-filled crack model in the Australian Hot Dry Rock field. For the characterization, a seismic event observed during drilling was used. This event was a weak attenuation event and continued over 100 seconds. The characterization method, which is based on the dynamics of a penny shaped crack filled with fluid, allows the estimation of crack aperture, radius and interfacial stiffness due to partial contact between upper and lower crack surfaces. A comparison of peak frequencies detected from field data with eigen frequencies suggested by the crack modelindicates that crack radius and aperture are about 160m and 17mm. The latter result needs additional consideration since the intensity of attenuation predicted by the computed model parameters is greater than that observed in the field data.

本文言語English
ページ(範囲)223-226
ページ数4
ジャーナルTransactions - Geothermal Resources Council
28
出版ステータスPublished - 2004 12 1
イベントGeothermal Energy: The Reliable Renewable - Geothermal Resources Council 2004 Annual Meeting, GRC - Indian Wells, CA, United States
継続期間: 2004 8 292004 9 1

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

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