Application of the integrated geophysical exploration technology in the exploration of deep carbonate geothermal reservoirs: A case study of the Xiong'an New Area
ZHANG Zhao1(), YIN Quan-Zeng1, ZHANG Long-Fei1(), ZHANG Da-Ming1, ZHANG Shi-Hui2, HUANG Guo-Shu2, ZHAO Shi-Feng1, YANG Biao3, TAI Li-Xun1, ZHANG Deng-Liang1, WANG Jin-Chao1, DUAN Gang1
1. Geophysical Exploration Team, Hebei Coal Field Geology Bureau, Xingtai 054000, China 2. School of Geophysics and Geomatics,China University of Geosciences (Wuhan),Wuhan 430074,China 3. Hebei Coal Field Geology Bureau,Shijiazhuang 050085, China
Xiong'an New Area has great potential for geothermal resources. Carbonate rocks are favorable reservoirs for deep geothermal resources in this area. The integrated geophysical exploration technology is an effective way to ascertain the deep structures and the characteristic stratigraphic structure of carbonate geothermal reservoirs. Aiming at the exploration target of deep carbonate geothermal reservoirs, this study put forward a surface-line-point hierarchical and progressive geophysical exploration model. Using the high-precision gravity and aeromagnetic data, this model first investigated the distribution range of carbonate rocks, the thickness of carbonate strata, the distribution of deep-seated faults, and the fluctuation of bedrocks. Then, it analyzed the low-resistivity anomalies of geothermal reservoir strata using the magnetotelluric method. Finally, this model finely characterized the geothermal reservoir strata using two-dimensional seismic profiles and analyzed the velocity structure and regional structural characteristics of anomaly zones in the geothermal field. Based on the exploration precision and reliability of gravity, aeromagnetic, magnetotelluric, and seismic geophysical methods in the geothermal resource exploration of different stages, as well as other factors such as construction cost and efficiency, this study analyzed the economic applicability of geophysical methods in the exploration of deep karst geothermal reservoirs and suggested that the carbonate geothermal resources should be explored using the geophysical exploration technology combination of gravity, magnetic, and magnetotelluric methods.
张昭, 殷全增, 张龙飞, 张大明, 张世晖, 黄国疏, 赵石峰, 杨彪, 台立勋, 张灯亮, 王进朝, 段刚. 综合物探技术在深部碳酸盐岩热储探测中的应用研究——以雄安新区为例[J]. 物探与化探, 2023, 47(4): 926-935.
ZHANG Zhao, YIN Quan-Zeng, ZHANG Long-Fei, ZHANG Da-Ming, ZHANG Shi-Hui, HUANG Guo-Shu, ZHAO Shi-Feng, YANG Biao, TAI Li-Xun, ZHANG Deng-Liang, WANG Jin-Chao, DUAN Gang. Application of the integrated geophysical exploration technology in the exploration of deep carbonate geothermal reservoirs: A case study of the Xiong'an New Area. Geophysical and Geochemical Exploration, 2023, 47(4): 926-935.
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