Laboratory study of hydraulic fracturing on hot dry rock
XU Tianfu1, ZHANG Yanjun1,2, YU Ziwang2, HU Zhongjun2, GUO Liangliang2
1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130000, China;
2. College of Construction Engineering, Jilin University, Changchun 130026, China
Abstract：Hot dry rock (HDR), which contains abundant geothermal energy, is a new type of geothermal resources and has become the worldwide focus in new energy utilization and development. The field test of enhanced geothermal engineering for development of HDR resources is costly, risky, and time-consuming. Therefore, it is necessary to carry out laboratory test for investigating the property of HDR before field fracturing and construction of artificial geothermal reservoir. The most urgent and essential problem is the research on hydraulic fracturing and micro seismic monitoring technology in the process of utilizing HDR. To further explore this issue to provide parameters and technical support for field fracturing and reservoir stimulation, Jilin University established a HDR laboratory simulation system that can carry out hydraulic fracturing of large-sized samples under high temperature and pressure. This paper focuses on the testing instrument, testing conditions and research results of the simulation system.
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