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Investigation on Heat Extraction Performance of Fractured Geothermal Reservoir Using Coupled Thermal-Hydraulic-Mechanical Model Based on Equivalent Continuum Method

Author

Listed:
  • Tong Wang

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Zhixue Sun

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Kai Zhang

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Chuanyin Jiang

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Ying Xin

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

  • Qiangqiang Mao

    (School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China)

Abstract

Natural fractures and artificial fractures in a tight rock matrix of an enhanced geothermal system make flow and heat transfer become seriously anisotropic. In this paper, a field-scale fractured heterogeneous geothermal reservoir model is built to study the heat transfer process. Based on an equivalent continuum method and local thermal non-equilibrium model, an equivalent permeability tensor is mapped from discrete fractures and a coupled thermal-hydraulic-mechanical mathematical model is adopted in which logarithmic stress sensitivity model is used to couple effective stress and permeability. From numerical simulation results at different injection rates, the contour results show the heterogeneity of flow, heat transfer and stress sensitivity are dominated by fractures distribution. Temperature contours reveal that the heat convection between water and rock in a fracture is more intense than the heat conduction between rock under different temperatures. The predicted power generation of a geothermal plant reveals the adverse effect on heat conversion efficiency, which is caused by the temperature drop at high injection rates.

Suggested Citation

  • Tong Wang & Zhixue Sun & Kai Zhang & Chuanyin Jiang & Ying Xin & Qiangqiang Mao, 2018. "Investigation on Heat Extraction Performance of Fractured Geothermal Reservoir Using Coupled Thermal-Hydraulic-Mechanical Model Based on Equivalent Continuum Method," Energies, MDPI, vol. 12(1), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:12:y:2018:i:1:p:127-:d:194071
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    References listed on IDEAS

    as
    1. Jiang, Fangming & Chen, Jiliang & Huang, Wenbo & Luo, Liang, 2014. "A three-dimensional transient model for EGS subsurface thermo-hydraulic process," Energy, Elsevier, vol. 72(C), pages 300-310.
    2. Lu, Shyi-Min, 2018. "A global review of enhanced geothermal system (EGS)," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 2902-2921.
    3. Yari, Mortaza, 2010. "Exergetic analysis of various types of geothermal power plants," Renewable Energy, Elsevier, vol. 35(1), pages 112-121.
    4. Zhao, Yangsheng & Feng, Zijun & Feng, Zengchao & Yang, Dong & Liang, Weiguo, 2015. "THM (Thermo-hydro-mechanical) coupled mathematical model of fractured media and numerical simulation of a 3D enhanced geothermal system at 573 K and buried depth 6000–7000 M," Energy, Elsevier, vol. 82(C), pages 193-205.
    5. Xu, Chaoshui & Dowd, Peter Alan & Tian, Zhao Feng, 2015. "A simplified coupled hydro-thermal model for enhanced geothermal systems," Applied Energy, Elsevier, vol. 140(C), pages 135-145.
    6. Zhang, Yan-Jun & Li, Zheng-Wei & Guo, Liang-Liang & Gao, Ping & Jin, Xian-Peng & Xu, Tian-Fu, 2014. "Electricity generation from enhanced geothermal systems by oilfield produced water circulating through reservoir stimulated by staged fracturing technology for horizontal wells: A case study in Xujiaw," Energy, Elsevier, vol. 78(C), pages 788-805.
    7. Sun, Zhi-xue & Zhang, Xu & Xu, Yi & Yao, Jun & Wang, Hao-xuan & Lv, Shuhuan & Sun, Zhi-lei & Huang, Yong & Cai, Ming-yu & Huang, Xiaoxue, 2017. "Numerical simulation of the heat extraction in EGS with thermal-hydraulic-mechanical coupling method based on discrete fractures model," Energy, Elsevier, vol. 120(C), pages 20-33.
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