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Home > Archive>Volume 48, Issue 2, 2021 >16-28. DOI:10.12143/j.ztgc.2021.02.003
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Numerical simulation of seepage and heat transfer in single fractured rock mass of geothermal reservoirs
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1.Faculty of Engineering, China University of Geosciences, Wuhan Hubei 430074, China;2.National Center for International Research on Deep Earth Drilling and Resource Development,Wuhan Hubei 430074, China;3.Department of Earth Sciences, University of Sargodha, Sargodha 40100, Pakistan

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TK529;P634

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    Abstract:

    Study of the percolation and heat transfer in fractured rock mass of geothermal reservoirs is of great significance to the exploitation of geothermal resources in hot dry rocks. In this paper， based on a hot rock dry geothermal project， the numerical simulation software of COMSOL Multiphysics is used to study the mechanism of seepage and heat transfer in single fractured rock mass of geothermal reservoirs， with analysis made of the influence of fluid injection velocity and temperature on the temperature field of rock mass and on the geothermal project of hot dry rocks. It is found that the influence of fluid parameters on the rock mass temperature field is mainly reflected in two aspects： influence on the disturbed region and amplitude of the rock mass temperature field， and influence on the time needed for the rock mass temperature field to reach the steady state. Increase of the fluid injection rate will reduce the system service life and the total outlet normal heat value during the service life. When considering the total outlet normal heat flux， there exists an optimal fluid injection rate， which is 0.011m/s in this study. Increase of fluid injection temperatures will increase the service life of the system and the total normal heat flux and total heat at the system outlet. This study provides a theoretical basis for the development and utilization of hot dry rock self-heating resources and a reference basis for the design of engineering operation parameters.

    Reference
    [1] 王贵玲，张薇， 梁继运，等.中国地热资源潜力评价[J].地球学，2017，38（4）：448-459.WANG Guiling， ZHANG Wei， LIANG Jiyun， et al. Evaluation of geothermal resources potential in China[J]. Acta Geoscientica Sinica， 2017，38（4）：448-459.
    [2] 郑敏.全球地热资源分布与开发利用[J].国土资源，2007（2）：56-57.ZHENG Min. The distribution， development and utilization of global geothermal resources[J]. Land & Resources， 2007（2）：56-57.
    [3] 贺凯.二氧化碳开发干热岩技术展望[J].现代化工，2018，38（6）：56-58，60.HE Kai. Prospects for developing hot dry rock by carbon dioxide[J]. Modern Chemical Industry， 2018，38（6）：56-58，60.
    [4] 张驰.干热岩单裂隙渗流-传热实验与数值模拟研究[D].长春：吉林大学，2017.ZHANG Chi. Experiment and numerical study of seepage heat transfer in a single fracture of hot dry rock[D]. Changchun： Jilin University， 2017.
    [5] 翟海珍，苏正，凌璐璐，等.平行多裂隙模型中换热单元体对EGS釆热的影响[J].地球物理学进展，2016，31（3）：1399-1405.ZHAI Haizhen， SU Zheng， LING Lulu， et al. Impact of heat transfer unit on EGS heat extraction in the multi-parallel fracture model [J]. Progress in Geophysics， 2016，31（3）：1399-1405.
    [6] 张万鹏.用近接型相似微小地震对判明干热岩热储层主要裂隙方位的研究[D].焦作：河南理工大学，2012.ZHANG Wanpeng. The azimuth determination research of the main fractures in hot dry rock reservoir by proximity similar microseismic doublets[D]. Jiaozuo： Henan Polytechnic University，2012.
    [7] Zhang L.， Jiang P.， Wang Z.， et al. Convective heat transfer of supercritical CO2 in a rock fracture for enhanced geothermal systems[J]. Applied Thermal Engineering， 2017，115：923-936.
    [8] 孙致学，徐轶，吕抒桓，等.增强型地热系统热流固耦合模型及数值模拟[J].中国石油大学学报（自然科学版），2016，40（6）：109-117.SUN Zhixue， XU Yi， Shuhuan LÜ， et al. A thermo-hydro-mechanical coupling model for numerical simulation of enhanced geothermal systems[J]. Journal of China University of Petroleum （Edition of Natural Science）， 2016，40（6）：109-117.
    [9] Brown D.， DuTeaux R.， Kruger P.， et al. Fluid circulation and heat extraction from engineered geothermal reservoirs[J]. Geothermics， 1999，28（4）：553-572.
    [10] 李正伟，张延军，张驰，等.花岗岩单裂隙渗流传热特性试验[J].岩土力学，2018，39（9）：3261-3269.LI Zhengwei， ZHANG Yanjun， ZHANG Chi， et al. Experiment on convection heat transfer characteristics in a single granite fracture[J]. Rock and Soil Mechanics， 2018，39（9）：3261-3269.
    [11] 白兰兰，陈建生，王新建，等.裂隙岩体热流模型研究[J].人民黄河，2007，29（5）：61-63.BAI Lanlan， CHEN Jiansheng， WANG Xinjian， et al. Study on cracked rock thermal current model[J]. Yellow River， 2007， 29（5）：61-63.
    [12] Ma Y.， Zhang Y.， Yu Z.， et al. Heat transfer by water flowing through rough fractures and distribution of local heat transfer coefficient along the flow direction[J]. International Journal of Heat and Mass Transfer， 2018，19：139-147.
    [13] Ma Y.， Zhang Y.， Huang Y.， et al. Experimental study on flow and heat transfer characteristics of water flowing through a rock fracture induced by hydraulic fracturing for an enhanced geothermal system[J]. Applied Thermal Engineering， 2019，154：433-441.
    [14] Huang Y.， Zhang Y.， Yu Z.， et al. Experimental investigation of seepage and heat transfer in rough fractures for enhanced geothermal systems[J]. Renewable Energy， 2019，135：846-855.
    [15] Jiang P.， Zhang L.， Xu R. Experimental study of convective heat transfer of carbon dioxide at supercritical pressures in a horizontal rock fracture and its application to enhanced geothermal systems[J]. Applied Thermal Engineering， 2017，117：39-49.
    [16] Kohl T.， Evansi K.F.， Hopkirk R.J.， et al. Coupled hydraulic， thermal and mechanical considerations for the simulation of hot dry rock reservoirs[J]. Geothermics， 1995，24（3）：345-359.
    [17] Rutqvist J.， Wu Y.S.， Tsang C.F.， et al. A modeling approach for analysis of coupled multiphase fluid flow， heat transfer， and deformation in fractured porous rock[J]. International Journal of Rock Mechanics and Mining Sciences， 2002， 39（4）：429-442.
    [18] 孙健.裂隙岩体热-水-力三场耦合米级尺度模型试验及数值模拟研究[D].北京：北京交通大学，2012.SUN Jian. Meter-scale experimental and numerical study of the thermal-hydrological-mechanical coupling fractured rocks[D]. Beijing： Beijing Jiaotong University， 2012.
    [19] Asai P.， Panja P.， McLennan J.， et al. Effect of different flow schemes on heat recovery from Enhanced Geothermal Systems （EGS）[J]. Energy， 2019，175：667-676.
    [20] Jiang F.， Luo L.，Chen J. A novel three-dimensional transient model for subsurface heat exchange in enhanced geothermal systems[J]. International Communications in Heat and Mass Transfer， 2013，41：57-62.
    [21] Kolditz O. Modelling flow and heat transfer in fractured rocks： dimensional effect of matrix heat diffusion[J]. Geothermics，1995，24（3）：421-437.
    [22] Zeng Y.-C.， Wu N.-Y.， Su Z.，et al. Numerical simulation of electricity generation potential from fractured granite reservoir through a single horizontal well at Yangbajing geothermal field[J]. Energy， 2014，65：472-487.
    [23] Zeng Y.， Zhan J.， Wu N.， et al. Numerical investigation of electricity generation potential from fractured granite reservoir by water circulating through three horizontal wells at Yangbajing geothermal field[J]. Applied Thermal Engineering， 2016，104：1-15.
    [24] Zeng Y.-C.， Wu N.-Y.， Su Z.，et al. Numerical simulation of heat production potential from hot dry rock by water circulating through a novel single vertical fracture at Desert Peak geothermal field[J]. Energy， 2013，63：268-282.
    [25] Zeng Y.-C.， Zhan J.-M.， Wu N.-Y.，et al. Numerical investigation of electricity generation potential from fractured granite reservoir through a single vertical well at Yangbajing geothermal field[J]. Energy， 2016，114：24-39.
    [26] Zeng Y.-C.， Zhan J.-m.， Wu， N.-Y.，et al. Numerical simulation of electricity generation potential from fractured granite reservoir through vertical wells at Yangbajing geothermal field[J]. Energy， 2016，103：290-304.
    [27] 郑鑫，郭春，徐建峰，等.单裂隙岩体的热流固耦合数值模拟与分析[J].现代隧道技术，2018，55（S2）：1263-1268.ZHENG Xin， GUO Chun， XU Jianfeng， et al. Numerical simulation and analysis of coupled heat-fluid-solid in single fractured rock mass[J]. Modern Tunnelling Technology， 2018，55（S2）：1263-1268.
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History
  • Received:June 29,2020
  • Revised:October 30,2020
  • Adopted:November 12,2020
  • Online: March 10,2021
  • Published: February 10,2021
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