Geophysical exploration and resource potential analysis of dry hot rocks in southeast Guangxi

OU Xiaoyi; YANG Fuqiang; MO Yajun; LI Yefei; KANG Zhiqiang; SUN Minghang; LI Jinghe

doi:10.12097/gbc.2023.05.003

2025 Vol. 44, No. 6

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OU Xiaoyi, YANG Fuqiang, MO Yajun, LI Yefei, KANG Zhiqiang, SUN Minghang, LI Jinghe. 2025. Geophysical exploration and resource potential analysis of dry hot rocks in southeast Guangxi. Geological Bulletin of China, 44(6): 993-1006. doi: 10.12097/gbc.2023.05.003

Citation:

OU Xiaoyi, YANG Fuqiang, MO Yajun, LI Yefei, KANG Zhiqiang, SUN Minghang, LI Jinghe. 2025. Geophysical exploration and resource potential analysis of dry hot rocks in southeast Guangxi. Geological Bulletin of China, 44(6): 993-1006. doi: 10.12097/gbc.2023.05.003

Geophysical exploration and resource potential analysis of dry hot rocks in southeast Guangxi

1.
Guangxi Geophysical Investigation Institute, Liuzhou 545005, Guangxi, China
2.
China University of Geosciences(Wuhan), Wuhan 430074, Hubei, China
3.
Guangxi Bureau of Geology & Mineral Prospecting & Exploitation, Nanning 530023, Guangxi, China
4.
Guangxi Institute of Geological Survey, Nanning 530023, Guangxi, Ghina
5.
College of Earth Sciences, Guilin University of Technology, Guilin 541004, Guangxi, China

Fund Project: Supported by Key Research and Development Program of the Department of Science and Technology of Guangxi Zhuang Autonomous Region (No. Guike AB24010021) and Scientific Research Projects for Preparatory Work of Departmental Budget of Guangxi Zhuang Autonomous Region Bureau of Geology, Mineral Resources Exploration and Development (No. Guidi Kuang Han [2024] 67) and Guangxi Talent Highland for Deep Geophysical Detection Technology and Experimental Research (No. Guidi Kuang Ban [2023] 55)

More Information

Author Bio: OU Xiaoyi, male, born in 1986, master's degree, senior engineer, mainly engaged in the application and research of electromagnetic methods; E−mail: 15594097@qq.com
Corresponding author: YANG Fuqiang, male, born in 1984, Ph.D., senior engineer, mainly engaged in the application and research of regional gravity and magnetics; E−mail: 1120179016@qq.com

Received Date: 04 May 2023

Revised Date: 12 December 2023

Publish Date: 15 June 2025

Abstract

Abstract

Objective
In response to the current situation of insufficient exploration and research on dry hot rock resources in Guangxi, this study focuses on carrying out comprehensive geophysical exploration and comprehensive research in the southeastern Guangxi region to explore its dry hot rock resource potential, further improve the research work level in this field in the region, and assist in the transformation and upgrading of Guangxi's energy structure.
Methods
Based on the characteristics of the geophysical field in the study area, magnetotelluric methods are comprehensively used to carry out deep exploration work. Combined with the geological research achievements of dry hot rocks, the regional faults and deep heat source channels are systematically analyzed. Through the coupling analysis of geophysical and geothermal geological data, the burial depth of deep structural planes and the possibility of the existence of hidden rock masses are discussed.
Results
Through research and analysis, multiple deep and large faults are identified as deep heat source channels, and hidden rock masses are found at the bottom of the Xichang Basin, with a burial depth of 3~5 km and a scale of hundreds of square kilometers. According to the thermal reservoir method estimation, the dry hot rock resource amount in the Xichang Basin is 182.48×10¹⁵ J, equivalent to 622.63×10⁴ tons of standard coal. Calculated based on a 20% recovery rate, the recoverable amount of dry hot rock resources is 36.5×10¹⁵ J, equivalent to 124.53×10⁴ tons of standard coal, accounting for 3.31% of the total energy production in Guangxi in 2018.
Conclusions
The geothermal resources of dry hot rocks in the southeastern Guangxi region have a superior prospect, and the Xichang Basin is an ideal favorable remote exploration area, with the value of carrying out further investigation, exploration, and development and utilization.
- southeastern Guangxi /
- hot dry rock /
- exploration geophysics /
- forward fitting /
- NLCG inversion /
- potential analysis /
- clean energy survey project

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References

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