Discussion on the key technology for fracture identification in hot dry rock reservoir

TAN Xianfeng; LIU Xiao; MA Zhemin; LIN Wenjing and WANG Guiling; ${author.authorNameEn}

doi:10.12143/j.ztgc.2023.02.007

2023 Vol. 50, No. 2

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TAN Xianfeng, LIU Xiao, MA Zhemin, LIN Wenjing and WANG Guiling, . 2023. Discussion on the key technology for fracture identification in hot dry rock reservoir. DRILLING ENGINEERING, 50(2): 48-57. doi: 10.12143/j.ztgc.2023.02.007

Citation:

TAN Xianfeng, LIU Xiao, MA Zhemin, LIN Wenjing and WANG Guiling, . 2023. Discussion on the key technology for fracture identification in hot dry rock reservoir. DRILLING ENGINEERING, 50(2): 48-57. doi: 10.12143/j.ztgc.2023.02.007

Discussion on the key technology for fracture identification in hot dry rock reservoir

1.Shandong Provincial Lunan Geology and Exploration Institute （Shandong Provincial Bureau of Geology and;Mineral Resources No.2 Geological Brigade）, Jining Shandong 272100, China;
2. Shandong Geothermal Clean Energy Exploration and Development Engineering Research Center,Jining Shandong 272100, China;
Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang Hebei 050061, China

Received Date: 28 April 2022

Revised Date: 13 September 2022

Abstract

Abstract

Hot dry rock resource is a kind of renewable clean energy with huge reserves， the development of hot dry rock needs to inject high-pressure water into deep strata through deep wells， and make it penetrate into the crack of rock stratum and absorb geothermal energy. As the migration channel of fluid， fracture network is very important in the exploitation and utilization of thermal energy in hot dry rock. While the high heterogeneity of reservoir fracture distribution， and the diversity of control and influence factors lead to difficulties on the research work. In this paper， geophysical exploration technology and seismic exploration are used to delineate the target area and drill hole positioning， vertical accurate positioning of fractures during drilling， comprehensive logging to judge the location of thermal reservoir and thermal reservoir quality evaluation； and micro seismic to judge the fracture space distribution during fracturing. The key technologies for accurate identification of fractures in hot dry rock reservoirs are systematically summarized and analyzed， which has guiding significance for improving the exploitation and utilization efficiency of hot dry rock.
- hot dry rock /
- reservoir fracture /
- reservoir fracturing /
- geophysical prospecting technology /
- drilling technology /
- comprehensive logging /
- microseismic

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References

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