Estimation of dynamics in a subsurface fracture reservoir by means of proximity microseismic doublets analysis

• Project/Area Number: 20560753
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Earth system and resources enginnering
• Research Institution: Muroran Institute of Technology
• Principal Investigator: NAGANO Koji Muroran Institute of Technology, 大学院・工学研究科, 教授 (90212109)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 再生可能資源 / エネルギー / 地熱エネルギー / 地下計測 / アコースティック・エミッション / 地下き裂 / 相似地震 / ケプストラム

Research Abstract

Proximity microseismic doublets are similar microseismic events that occur with overlapping waveforms. Analysis of such similar, overlapping microseismic events can provide precise relative source locations of those events because their relative location is not affected by change of velocity structure. I developed time-quefrency analysis that can detect precise interval between P-waves. MUSIC analysis is applied to detect their interval. MUSIC analysis provides interval between proximity similar events in high resolution.
I analyzed proximity microseismic doublets that were measured during a hydraulic fracturing at the Soultz hot dry rock field. I located nine proximity microseismic doublets. I determined relative location between their sources of the proximity microseismic doublets.
A multiple interface visualization system for hypocenters and relative locations of AE sources are developed. The visualization system shows simultaneously the whole image of the reservoir and fine structures between AE sources so that we can analyze characteristic properties of the geothermal reservoir.

Research Products

• [Journal Article] Estimation of Permeability of the Aartificial Subsurface Fracture in Higashi-Hachimantai, Iwate, Japan, by the Dynamics of Fluid in a Fracture (2010)
  • Author(s): S.Ito, K.Hayashi, K.Nagano
  • Journal Title: GeoNZ 2010(Auckland,October 2010) Pages: 139-139
  • Peer Reviewed
• [Journal Article] Multiple interface visualization system for a geothermal reservoir (2010)
  • Author(s): K.Nagano, D. Konishi
  • Journal Title: Joint Seminar on Environmental Science and Disaster Mitigation 2010, Muroran(March 10) Pages: 64-65
• [Journal Article] An application of the multiple signal classification method for detection of intervals between proximity acoustic emission doublets (2009)
  • Author(s): K. Nagano, K. Tomohiro
  • Journal Title: The 9th Society of Exploration Geophysicists of Japan International Symposium, Sapporo(October 12-14) Pages: 64-64
  • Peer Reviewed
• [Journal Article] Time-quefrency analysis for detection of intervals between proximity similar events (2009)
  • Author(s): K.Nagano, K. Itakura
  • Journal Title: The 2009 IEEE International Geoscience & Remote Sensing Symposium, Cape town(July 12-17) Pages: 28-28
  • Peer Reviewed
• [Journal Article] Computer simulation of the multiple signal classification (MUSIC) method for proximity AE doublets (2009)
  • Author(s): K.Nagano, K.Tomohiro
  • Journal Title: Joint Seminar on Environmental Science and Disaster Mitigation 2009, Muroran(March, 10) Pages: 79-80
• [Journal Article] 地下き裂の相対座標を推定するための近接型AEダブレットの自動検出法 (2008)
  • Author(s): 永野宏治, 江原大輔
  • Journal Title: 電気学会論文誌電子・情報・システム部門誌 128 Pages: 1005-1010
  • NAID: 10021132866
• [Presentation] Multiple Interface Visualization System for a Geothermal Res ervoir (2010)
  • Author(s): K.Nagano, D.Konishi
  • Organizer: Joint Seminar on Environmental Science and Disaster Mitigation 2010
  • Place of Presentation: Muroran Institute of Technology, Japan
  • Year and Date: 2010-03-10
• [Presentation] 地下き裂のAE源の分布・相対座標同時表示システム (2010)
  • Author(s): 永野宏治,小西大輔
  • Organizer: 第42回計測自動制御学会北海道支部学術講演会論文集, pp.7-8
  • Place of Presentation: 札幌
  • Year and Date: 2010-02-22
• [Presentation] 地下き裂のAE源の分布・相対座標同時表示システム (2010)
  • Author(s): 永野宏治, 小西大輔
  • Organizer: 第42回計測自動制御学会北海道支部学術講演会
  • Place of Presentation: 北海道大学,札幌
  • Year and Date: 2010-02-22
• [Presentation] 近接型相似微小地震対の入力時間差検出におけるARスペクトル推定法の検討 (2010)
  • Author(s): 山田勇人,永野宏治
  • Organizer: 日本地熱学会 平成22年学術講演会講演論文集,p.P02
  • Place of Presentation: つくば
• [Presentation] 1993年Soultz地熱フィールドで観測した近接型相似微小地震対の相対震源標定 (2010)
  • Author(s): 朝魯蒙,山田勇人,友廣寿理,Roy Baria,永野宏治
  • Organizer: 日本地熱学会 平成22年 学術講演会講演論文集,p.B26
  • Place of Presentation: つくば
• [Presentation] 1993年Soultz地熱フィールドで観測した近接型相似微小地震対の解析 (2010)
  • Author(s): 朝魯蒙,山田勇人,友廣寿理,Roy Baria,永野宏治
  • Organizer: 平成22年度物理探査学会秋季学術講演会講演論文集,pp.50-53
  • Place of Presentation: 仙台
• [Presentation] Estimation of Permeability of the Aartificial Subsurface Fracture in Higashi-Hachimantai, Iwate, Japan, by the Dynamics of Fluid in a Fracture. (2010)
  • Author(s): S.Ito, K.Hayashi, K.Nagano
  • Organizer: GeoNZ 2010
  • Place of Presentation: Auckland, New Zealand
• [Presentation] 1993年Soultz地熱フィールドで観測した近接型相似微小地震対の解析 (2010)
  • Author(s): 朝魯蒙, 山田勇人, 友廣寿理, Roy Baha, 永野宏治
  • Organizer: 平成22年度物理探査学会秋季学術講演会講演論文集
  • Place of Presentation: 仙台
• [Presentation] 1993年Soultz地熱フィールドで観測した近接型相似微小地震対の相対震源標定 (2010)
  • Author(s): 朝魯蒙, 山田勇人, 友廣寿理, Roy Baha, 永野宏治
  • Organizer: 日本地熱学会平成22年学術講演会講演論文集
  • Place of Presentation: つくば
• [Presentation] 近接型相似微小地震対の入力時間差検出におけるARスペクトル推定法め検討 (2010)
  • Author(s): 山田勇人, 永野宏治
  • Organizer: 日本地熱学会平成22年学術講演会講演論文集
  • Place of Presentation: つくば
• [Presentation] 近接型AEダブレットのP波とS波を分離するケプストラム解析 (2009)
  • Author(s): 永野宏治,山口徹
  • Organizer: 第41回計測自動制御学会北海道支部学術講演会論文集, pp.91-92
  • Place of Presentation: 札幌
  • Year and Date: 2009-02-26
• [Presentation] 近接型AEダブレットの入力時間差を検出するMUSIC法の相関行列の検討 (2009)
  • Author(s): 友廣寿理,永野宏治
  • Organizer: 第41回計測自動制御学会北海道支部学術講演会論文集, pp.93-94
  • Place of Presentation: 札幌
  • Year and Date: 2009-02-26
• [Presentation] 近接型AEダブレットのMUSIC解析における相関行列の統一的解釈 (2009)
  • Author(s): 友廣寿理,永野宏治
  • Organizer: 資源・素材2009企画発表・一般発表(A)(S)講演資料,pp. 229-230
  • Place of Presentation: 札幌
• [Presentation] 時間窓を使ったケプストラム解析による近接型AEダブレットのP波の入力時間差の推定 (2009)
  • Author(s): 永野宏治,山口徹
  • Organizer: 平成21年度物理探査学会春季学術講演会講演論文集, pp.117-120
  • Place of Presentation: 東京
• [Presentation] An application of the multiple signal classification method for detection of intervals between proximity acoustic emission doublets (2009)
  • Author(s): K.Nagano, K.Tomohiro
  • Organizer: The 9th Society of Exploration Geophysicists of Japan International Symposium
  • Place of Presentation: Hokkaido University, Japan
• [Presentation] Time-quefrency analysis for detection of intervals between proximity similar events (2009)
  • Author(s): K.Nagano, K.Itakura
  • Organizer: The 2009 IEEE International Geoscience & Remote Sensing Symposium
  • Place of Presentation: Cape Town, Sounth Africa
• [Presentation] 時間窓を使ったケプストラム解析による近接型AEダブレットのP波の入力時間差の推定 (2009)
  • Author(s): 永野宏治, 山口徹
  • Organizer: 平成21年度物理探査学会春季学術講演会
  • Place of Presentation: 早稲田大学,東京
• [Presentation] 近接型AEダブレットのMUSIC解析における相関行列の統一的解釈 (2009)
  • Author(s): 友廣寿理, 永野宏治
  • Organizer: 資源・素材2009
  • Place of Presentation: 北海道大学,札幌
• [Presentation] Proximity AE doublet analysis for subsurface fracture measurement (2008)
  • Author(s): K. Nagano
  • Organizer: Western Division of the Canadian Association of Geographers Annual Meeting
  • Place of Presentation: Western Washington University, USA
• [Remarks] ホームページ等
  • URL: http://wsp.csse.muroran-it.ac.jp/
• [Remarks]
  • URL: http://wsp.csse.muroran-it.ac.jp/