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Control of Geothermal Reservoirs Consisting of Multiple Cracks

Research Project

Project/Area Number 05232103
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionTohoku University

Principal Investigator

HAYASHI Kazuo  Tohoku University, Institute of Fluid Science, Professor, 流体科学研究所, 教授 (30111256)

Co-Investigator(Kenkyū-buntansha) MATSUKI Kohji  Tohoku University Faculty of Engineering, Professor, 工学部, 教授 (10108475)
SATO Kazuhiko  Muroran University of Technology, Faculty of Engineering, Professor, 工学部, 教授 (30002009)
NIITSUMA Hiroaki  Tohoku University Faculty of Engineering, Professor, 工学部, 教授 (90108473)
MIZUTA Yoshiaki  Yamaguchi University, Faculty of Engineering, Professor, 工学部, 教授 (20107733)
OGINO Fumimaru  Kyoto University, Faculty of Engineering, Professor, 工学部, 教授 (50026069)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥132,300,000 (Direct Cost: ¥132,300,000)
Fiscal Year 1995: ¥34,100,000 (Direct Cost: ¥34,100,000)
Fiscal Year 1994: ¥40,600,000 (Direct Cost: ¥40,600,000)
Fiscal Year 1993: ¥57,600,000 (Direct Cost: ¥57,600,000)
KeywordsGeothermal Reservoir / Artificial Crack / Fluid Flow in a Crack / Heat Transfer in a Crack / Characteristic of a Crack Surface / Acoustic Emission / Fractal Crack Surface / Crack Stiffness
Research Abstract

The main objective of the present project is to clarify the mechanical response of geothermal engineered reservoirs, such as HDR/HWR reservoirs, within a rock mass with many planes of weakness. To this end, we have constructed models for the case that the reservoir consists of innumerable joints and for the case that the reservoir consists of predominant reservoir cracks. We have clarified the basic characteristics of such reservoirs. Then, we have applied them successfully to the results of massive hydraulic fracturing/stimulation conducted at the Fenton Hill HDR field and at the Yunomori HWR field. It is preferable that the basic characteristics of the models can be estimated by using the geometrical and mechanical characteristics of fracture surfaces of fractures within core samples retrieved from the depth of boreholes. Therefore, we developed new methods for estimating the hydraulic properties of fractures from the fractal characteristics of fracture surfaces based on the laborato … More ry experiments under tri-axial stress conditions. Furthermore, we conducted mini-hydraulic fracturings in a driftway at the Kamioka mine to make a man-made fracture and to characterize the fractal characteristics of the surfaces created by hydraulic fracturing to find that the fractal characteristics are different from those of surfaces of fractures made by explosion and of slicken sides which are the surfaces subjected to shear movements. We have also developed new techniques on crosshole seismic measurement, borehole radar measurement and precise AE measurement for estimating the structure of multicrack geothermal reservoirs and the in-situ stress state of surrounding rocks. We have analyzed data sets observed at geothermal fields and have estimated reservoir characteristics by using these new techniques. It was found that it is highly probable that man-made reservoir cracks are accompanied by many-small secondary cracks generally. The hydraulic and heat transfer properties have been investigated for reservoir cracks accompanied by the secondary cracks by conducting laboratory experiments, where the rock with secondary cracks is simulated by a packed cube bed. Less

Report

(4 results)
  • 1996 Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (61 results)

All Other

All Publications (61 results)

  • [Publications] Kazuo Hayashi: "Transition of Fundamental Nature of a Reservoir System Consisting of Multiple Cracks Due to Hydraulic Stimulation with Aplication to a Model Field" Proc.3rd Inter.HDR Forum. 107-108 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kazuo Hayashi: "In Situ Stress Measurements by HydraulicFracturing for a Rock Mass with Many Planes of Weakness" Int.J.Rock Mech.Min.Sci.&Geomech.Abstr.accepted. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Fumimaru Ogino: "Pressure Drop of Water Flow Through Fracture Surrounded by Secondary Crack Network in Hot Dry Rock" Proc.of 9th Int.Symp.Trans.Pheno.Ther.Fluids Eng.2. 1042-1047 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Ken Kuriyama: "Three-dimensional Elastic Analysis by the Boundary Element Method with Analytical Integrations over Trianglar Leaf Elements" Int.J.Rock Mech.Min.Sci.&Geomech.Abstr.32-1. 77-83 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshiaki Mizuta: "In-Situ Measurement and Numerical Simulation of Rock Deformation Induced by Fluid Injection into Artificial Fracture" Proc.Korea-Japan Joint Symp.Rock Eng.383-388 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroshi Asanuma: "Triaxial Seismic Measurement while Drilling and Estimation of Subsurface Structure" Geother.Sci & Tech.5. 31-51 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirokazu Moriya: "Subsurface Stress Field Determination Using Multiplets in Downhole Three-component Microseismic Measurement" Proc.2nd North Am.Rock Mech.Symp.853-858 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kenichi Itakura: "Fractals on AE During Hydraulic Fracturing" Journal of Acoustic Emission. 13-3/4. S75-S82 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kohji Nagano: "Polarization of Crack Waves along an Artificial Subsurface Fracture" Geophysical Research Letters. 23-16. 2017-2020 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jong Jing Lee: "Simulation of Water Flow through a Closed Hydraulic Fracture in Granite" Proc.The Korea-Japan Joint Symp.on Rock Engineering. 473-479 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Katushiko Sugawara: "Evaluation of Initial Rock Stress by the Orthotropic Spherical Shell Model" Proc.2nd North Am.Rock Mech.Symp.905-912 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hidenori Yoshida: "Micromechanics-based Continuum Theory for Jointed Rock Mass and Analysis of Large-Scale Cavern Excavation" Proc.8th Int.Cong.Rock Mech.2. 689-692 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kazuo Hayashi: "Transition of Fundamental Nature of a Reservoir System Consisting of Multiple Cracks Due to Hydraulic Simulation with Application to a Model Field" Proc.3rd Inter.HDR Forum. 107-108 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kazuo Hayashi: "In Situ Stress Measurements by Hydraulic Fracturing for a Rock Mass with Many Planes of Weakness" Int.J.Rock Mech.Min.Sci.& Geomech.Abstr.(accepted). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Fumimaru Ogino: "Pressure Drop of Water Flow Through Fracture Surrounded by Secondary Crack Network in Hot Dry Rock" Proc.of 9th Int.Symp.Trans.Pheno.Ther.Fluids Eng.2. 1042-1047 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Ken Kuriyama: "Three-dimensional Elastic Analysis by the Boundary Element Method with Analytical Integrations over Trianglar Leaf Elements" Int.J.Rock Mech.Min.Sci.& Geomech.Abstr.32-1. 77-83 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshiaki Mizuta: "In-Situ Measurement and Numerical Simulation of Rock Deformation Induced by Fluid Injection into Artificial Fracture" Proc.Korea-Japan Joint Symp.Rock Eng.383-388 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroshi Asanuma: "Triaxial Seismic Measurement while Drilling and Estimation of Subsurface Structure" Geother.Sci & Tech.5. 31-51 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hirokazu Moriya: "Subsurface Stress Field Determination Using Multiplets in Downhole Three-component Microseismic Measurement" Proc.2nd North Am.Rock Mech.Symp.853-858 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kenichi Itakura: "Fractals on AE During Hydraulic Fracturing" Journal of Acoustic Emission. 13-3/4. S75-S82 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kohji Nagano: "Polarization of Crack Waves along an Artificial Subsurface Fracture" Geophysical Research Letters. 23-16. 2017-2020 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jong Jing Lee: "Simulation of Water Flow through a Closed Hydraulic Fracture in a Granite" Proc.The Korea-Japan Joint Symp.on Rock Engineering. 473-479 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Katsuhiko Sugawara: "Evaluation of Initial Rock Stress by the Orthotropic Spherical Shell Model" Proc.2nd North Am.Rock Mech.Symp.905-912 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hidenori Yoshida: "Micromechanics-based Continuum Theory for Jointed Rock Mass and Analysis of Large-Scale Cavern Excavation" Proc.8th Int.Cong.Rock Mech.2. 689-692 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Hayashi: "Transition of fundamental nature of a reservoir system consisting of multiple cracks due hydraulic stimulation with application to a model field" Proc.3rd International HDR Forum. (発表予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 林 一夫: "水圧破砕地殻応力計測法により得られた地殻応力成分の信頼性評価" 日本機械学会論文集(A編). 61. 79-84 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 荻野文丸: "き裂内を流れる流体の圧力損失" 化学工学会第60年会講演要旨集. 3. 80 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 荻野文丸: "スリット状充てん層におけるトレーサ応答" 化学工学シンポジウムシリーズ45,化学工学における流れの数値シミュレーションの現状と課題. 7-12 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 石田 毅: "AEゾンデによる水圧破砕亀裂方向推定のための論理的・実験的検討" 土木学会論文集. III-33. 165-176 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] H.Asanuma: "Triaxial seismic measurement while drilling and estimation of subsurface structure" Geothermal Science & Technology. 5. 31-51 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] H.Moriya: "Characterization of subsurface crack system by combining triaxial doublets analysis and focal mechanism analysis" Geothermal Science & Technology. 5. 123-145 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Nagano: "Characterization of thermal cracking by AE time series analysis" Journal of Acoustic Emission. 13. S54-S59 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 松木浩二: "花崗岩中の小規模水圧破砕き裂の表面粗さと初期間隙分布" 日本地熱学会誌. 17. 213-232 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小島 隆: "花崗岩中の小規模水圧破砕き裂の垂直剛性と透水性に関する実験的研究" 日本地熱学会誌. 17. 285-295 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 菅原勝彦: "直交異方性球殻モデルによる初期応力解析" 資源と素材. III. 1001-1006 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 菅原勝彦: "等方性球殻理論による初期応力測定値の分析と考察" 資源と素材. III. 913-918 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] H.Yoshida: "Micromechanics-Based continuum theory for jointed rock mass and analysis of large-scale cavern excavation" Proceedings of Eighth International Congress on Rock Mechanics,Tokyo,Japan,1995,A.A.Balkema. 2. 689-692 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] P.Nanakorn: "A fracture mechaniscs-based design method for SFRC tunnel linings" Proc.of JSCE. 30. 221-233 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 林 一夫: "弱面群を有する岩体の水圧破砕と貯留層の形態" 施工管理と工程監視のための地下計測ワークショップ論文集. 88-93 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Okabe: "Case study of fracture detection logging and its evaluation in geothermal well" Proc.VII Int.Symp.on the Observation of the Continental Crust through Drilling. 308-311 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 林 一夫: "水圧破砕地殻応力計測法により得られた地殻応力成分の信頼性評価" 日本機械学会第72期全国大会講演論文集. I. 444-446 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 荻野 文丸: "き裂内を流れる流体の圧力損失" 化学工学会第60会講演要旨集. (発表予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 荻野 文丸: "スリット状充てん層におけるトレーサ応答" 化学工学会第27回秋季大会講演要旨集. I. 2- (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 荻野 文丸: "スリット状充てん層における物質移動" 第31回日本伝熱シンポジウム講演論文集. III. 1084-1086 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Mizuta: "Studies on hydraulic fracturing stress measurement mssisted by water jet borehole slotting" Shigen to Sozai. 110. 289-296 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 佐藤 嘉晃: "光ファイバによる探査ボーリング孔内の温度分布計測" 日本地熱学会誌. 16. 173-184 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 天満 則夫: "豊羽鉱山における天然亀裂を含む鉱脈を用いた熱抽出実験のモデル化" 日本地熱学会誌. 16. 185-202 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] H.Niitsuma: "Analysis of acoustic emission from hydraulically induced tensile fracture of rock" Journal of Acoustic Emission. 11. s1-s17 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] H.Moriya: "Determination of subsurface stress direction by means of AE doublet source location and focal mechanism analysis" Progress in Acoustic Emission,The Japanese Soc.for NDI. VI. 481-486 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Hisamatsu: "Downhole triaxial AE measurement during hydraulic fracturing test at Yunomori site and estimation of dynamic behavior of subsurface fracture" Progress in Acoustic Emission,The Japanese Soc.for NDI. VI. 425-430 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Ebihara: "Borehole radar signal identification with a time-frequency distribution" International Symposium on Electromagnetic Compatibility. 681-684 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 永野 宏治: "雄勝地熱フィールドにおけるAE発生時系列と地下き裂進展過程" 日本地熱学会誌. 16. 435-454 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Nagano: "Characterization of thermal cacking by AE time series analysis" Progress in Acoustic Emission,The Japanese Soc.for NDI. VII. 179-184 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Itakura: "Fractals on AE emanated during hydraulic fracturing" Progress in Acoustic Emission,The Japanese Soc.for NDI. VII. 255-260 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 松木 浩二: "水圧破砕き裂の接触のシミュレーション" 資源・素材学会平成7年度春季大会講演要旨集. (発表予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Hayashi,T.Ito: "In Situ Stress Measurement by Hydraulic Fracturing at the Kamasishi Mine" Int.J.Rock Mech.Min.Sci.& Geomech.Abstr.30. 951-958 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 荻野 文丸: "フラクチャ内熱伝達" 日本地熱学会誌. 15. 156-159 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 森谷 祐一,新妻 弘明: "3軸AEダブレット解析による地下き裂進展挙動の高精度推定" 物理探査学会第89回学術講演会講演論文集. 159-163 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Moriya et al.: "Precise Source Location of AE Doublets by Spectral Matrix Analysis of Triaxial Hodogram" Geophysics. 59. 36-45 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Nagano et al.: "Acoustic Emission Sequences Measured in Ogachi HDR Geothermal Field" Proc.1993 Int.Symp.Nonlinear Theory and Its Application. 3. 863-866 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小島 隆,村井 正,松木 浩二: "岩石のき裂面粗さと接触剛性ならびに透水性の関係" 資源・素材学会平成6年度春大会講演要旨集. (発表予定). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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