Abstract
The Yishu fault zone in Shandong Province, China, exhibits favorable conditions for medium- and high-temperature geothermal storage. However, its geothermal occurrence patterns and heat storage model remain unclear. Recognizing the importance of deep heat sources and heat channels in unraveling the formation mechanisms of medium- and high-temperature geothermal systems, we conducted a magnetotelluric survey along the Yishu fault zone, which contained 10 survey lines and 119 usable points. Using two-dimensional and three-dimensional nonlinear conjugate gradient inversion, the deep electrical structure was obtained, and the three-dimensional geothermal reservoir model in the study area was constructed for the first time. The results show that the deep low-resistance anomaly in the Yishu fault zone moves upward through the channel with slightly higher resistivity, forming a relatively low-resistance layer and a low-resistance layer in the shallow part, corresponding to the heat source, thermal conduction fault, heat reservoir, and overburden layer, respectively. The fault structure primarily controls regional geothermal anomalies, influencing atmospheric precipitation, surface water infiltration, and geothermal water migration pathways. The results of this study have a certain guiding significance for the study of the formation mechanism and distribution law of geothermal resources in the middle and deep strata of the Yishu fault zone. Additionally, the results provide valuable insights for the exploration and assessment of geothermal resources in the area.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Agemar, T., 2022. Bottom hole temperature correction based on empirical correlation. Geothermics, 99: 102296.
Berdichevsky, M.N. and Weaver, J.T., 1999. Marginal notes on magnetotellurics. Surveys in geophysics, 20(3–4): 341–375.
Chen, H., Xie, X., Liu, E., Zhou, L. and Yan, L., 2021. Application of Infrared Remote Sensing and Magnetotelluric Technology in Geothermal Resource Exploration: A Case Study of the Wuerhe Area, Xinjiang. Remote Sensing, 13(24): 4989.
Deng, Q. et al., 2021. Evaluation of favourable hot dry rock areas in the east of the Yishu fault zone in China. Australian Journal of Earth Sciences, 68(2): 245–261.
Dmitriev, V.I. and Berdichevsky, M.N., 1979. The fundamental model of magnetotelluric sounding. Proceedings of the IEEE, 67(7): 1034–1044.
Egbert, G.D., 1997. Robust multiple-station magnetotelluric data processing. Geophysical journal international, 130(2): 475–496.
Egbert, G.D. and Kelbert, A., 2012. Computational recipes for electromagnetic inverse problems. Geophysical Journal International, 189(1): 251–267.
Groom, R.W. and Bailey, R.C., 1989. Decomposition of magnetotelluric impedance tensors in the presence of local three-dimensional galvanic distortion. Journal of Geophysical Research: Solid Earth, 94(B2): 1913–1925.
Kelbert, A., Meqbel, N., Egbert, G.D. and Tandon, K., 2014. ModEM: A modular system for inversion of electromagnetic geophysical data. Computers & Geosciences, 66: 40–53.
Kun, Z. et al., 2020. Magnetotelluric evidence for the multi-microcontinental composition of eastern South China and its tectonic evolution. Scientific Reports, 10(1).
Kunetz, G., 1972. PROCESSING AND INTERPRETATION OF MAGNETOTELLURIC SOUNDINGS. GEOPHYSICS, 37(6): 1005–1021.
Lee, T.J., Han, N. and Song, Y., 2018. Magnetotelluric survey applied to geothermal exploration: An example at Seokmo Island, Korea. Exploration Geophysics, 41(1): 61–68.
Li, X. et al., 2022. Magnetotelluric signatures of Neoproterozoic subduction, and subsequent lithospheric reactivation and thinning beneath central South China. Tectonophysics, 833: 229365.
Liao, Y. et al., 2023a. A high geothermal setting in the Linyi geothermal field: Evidence from the lithospheric thermal structure. Energy Exploration & Exploitation, 41(6): 1899–1918.
LIU Chunhua, WANG Wei and Zhengrun, W., 2018. Analysis of hydrothermal geothermal resources and its prospect of development and utilization in Shandong. Geological Survey of China, 2(5): 51–53.
Liu, Y. et al., 2023. Characteristics of the stratigraphic reservoirs and caprocks of the geothermal resources in the Northwestern Shandong region. Energy Exploration & Exploitation, 41(5): 1519–1538.
Maithya, J. and Fujimitsu, Y., 2019. Analysis and interpretation of magnetotelluric data in characterization of geothermal resource in Eburru geothermal field, Kenya. Geothermics, 81: 12–31.
Mekkawi, M.M., Abd-El-Nabi, S.H., Farag, K.S. and Abd Elhamid, M.Y., 2022. Geothermal resources prospecting using magnetotelluric and magnetic methods at Al Ain AlSukhuna-Al Galala Albahariya area, Gulf of Suez, Egypt. Journal of African Earth Sciences, 190: 104522.
Newman, G.A. and Alumbaugh, D.L., 2000. Three-dimensional magnetotelluric inversion using nonlinear conjugate gradients. Geophysical journal international, 140(2): 410–424.
Ogawa, Y. and Junge, A., 2002. On two-dimensional modeling of magnetotelluric field data. Surveys in Geophysics, 23(2–3): 251–272.
Patro, P.K., 2017. Magnetotelluric Studies for Hydrocarbon and Geothermal Resources: Examples from the Asian Region. Surveys in Geophysics, 38(5): 1005–1041.
Ritter, O., Junge, A. and Dawes, G., 1998. New equipment and processing for magnetotelluric remote reference observations. Geophysical Journal International, 132(3): 535–548.
Rodi, W. and Mackie, R.L., 2001. Nonlinear conjugate gradients algorithm for 2-D magnetotelluric inversion. GEOPHYSICS, 66(1): 174–187.
Siripunvaraporn, W., Egbert, G. and Uyeshima, M., 2005. Interpretation of two-dimensional magnetotelluric profile data with three-dimensional inversion: synthetic examples. Geophysical Journal International, 160(3): 804–814.
Travassos, J.M. and Beamish, D., 1988. Magnetotelluric data processing— a case study. Geophysical Journal International, 93(2): 377–391.
Vozoff, K., 1972. THE MAGNETOTELLURIC METHOD IN THE EXPLORATION OF SEDIMENTARY BASINS. GEOPHYSICS, 37(1): 98–141.
Yang, H., Sun, Y. and Jiang, T., 2020. Study on geothermal genesis in Juxian area, Shandong Province. IOP Conference Series: Earth and Environmental Science, 558(3): 032014.
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by LUMEIDIKE202326.
Du Wenlong, Engineer, graduated from Shandong University of Science and Technology with a Bachelor’s degree in Geophysics. He is currently an engineer in the Third Exploration Team of Shandong Coalfield Geological Bureau. He is engaged in electromagnetic data acquisition, processing and interpretation.
Zhou Xingyu, Senior engineer, graduated from China University of Geosciences (Wuhan) in Resource Exploration Engineering. He is currently a senior engineer in the Third Exploration Team of Shandong Coalfield Geological Bureau. His main interests are coal mine goaf exploration, geological disaster investigation and evaluation, geothermal investigation, and metal exploration.
Rights and permissions
About this article
Cite this article
Du, W., Zhou, X., Sun, Y. et al. Three-dimensional geothermal reservoir model using the magnetotelluric method in medium and deep strata of Yishu fault zone, Rizhao Section. Appl. Geophys. (2024). https://doi.org/10.1007/s11770-024-1106-7
Received:
Revised:
Published:
DOI: https://doi.org/10.1007/s11770-024-1106-7