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标题:Hydromechanical insight of fracture opening and closure during in-situ hydraulic fracturing in crystalline rock
时间:2021-01-13 22:33:57
DOI:10.1016/j.ijrmms.2020.104450
大小:15943 kb
页数:18 PAGES
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目录:
  • Hydromechanical insight of fracture opening and closure during in-situ hydraulic fracturing in crystalline rock
    • 1 Introduction
      • 1.1 Background on transient pressure analysis (TPA)
      • 1.2 Hydromechanics
      • 1.3 Research objectives
    • 2 Rock mass characterization and experimental setup
      • 2.1 Rock mass characterization
      • 2.2 Experimental setup
      • 2.3 Injection protocol
    • 3 Methods
      • 3.1 DFIT
      • 3.2 Pressure-controlled step tests
    • 4 Results and interpretations
      • 4.1 DFIT
        • 4.1.1 Test comparison
        • 4.1.2 Contact pressure from the G*dp/dG versus G method
        • 4.1.3 ISIP from the pressure-decay-rate method
        • 4.1.4 Effective ISIP from the dp/dG versus G method
      • 4.2 Pressure-controlled step tests
      • 4.3 Comparison of methods
    • 5 Discussion
      • 5.1 Transient pressure effects: geology and fluid rheology
      • 5.2 Best estimate of the minimum principal stress magnitude
      • 5.3 Implication for the stress field
    • 6 Conclusions
    • Declaration of competing interest
    • Acknowledgement
    • Appendix D Supplementary data
    • Appendix A.1 Change in pressure and derivative
    • Appendix A.2 G-function
    • Appendix A.3 DFIT from experiment HF2 and HF8
    • References

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