The drilling engineering for shale gas in carbonate areas in China is facing prominent carbonate karst. It is necessary to carry out near-surface geophysical prospecting before drilling and reasonably select the well locations in order to ensure the safety of the well site and reduce the drilling engineering risks. Taking the siting of Well Guirongye-1 in Rong'an County, Liuzhou City, Guangxi Province as an example, this study conducted the application research of well siting before drilling comprehensively using three geophysical prospecting methods, namely the high-density resistivity method, the audio-frequency magnetotellurics method, and radon survey, achieving satisfactory results. Well Guirongye-1 did not encounter a fault fracture zone near the surface, which is basically consistent with the interpretation results of comprehensive geophysical prospecting. This result indicates that the comprehensive geophysical prospecting method is feasible and effective in the siting of shale gas exploration wells in the carbonate areas in south China. This study will provide a certain reference for the well siting before drilling in similar areas in the future.
罗卫锋, 胡志方, 甘伏平, 张庆玉, 康海霞, 张云枭. 南方碳酸盐岩地区页岩气钻探井位选址中的综合物探方法应用[J]. 物探与化探, 2022, 46(4): 824-829.
LUO Wei-Feng, HU Zhi-Fang, GAN Fu-Ping, ZHANG Qing-Yu, KANG Hai-Xia, ZHANG Yun-Xiao. Application of comprehensive geophysical prospecting method in well siting for shale gas exploration in carbonate areas in east China. Geophysical and Geochemical Exploration, 2022, 46(4): 824-829.
Wang J L, Di B Y, Zhang B S, et al. The application of audio frequency magnetotelluric method to the geothermal exploration: A case study of Huangniqiao area, Ninghua County, Fujian Province[J]. Geophysical and Geochemical Exploration, 2021, 45(3): 576-582.
Zhao G X, Ruan S, Wu S Y. Researches on the selection of key parameters in AMT 2D nonlinear conjugate inversion for railway tunnel exploration[J]. Geophysical and Geochemical Exploration, 2021, 45(2): 480-489.
Yang J, Li H, Wang Q, et al. Rapid acquisition of shallow 3D geological features of undeveloped area in city by comprehensive Geophysical exploration:a case study on the Unicorn Island in Tianfu New District,Chengdu City[J]. Progress in Geophysics, 2021, 36(4): 1751-1759.
Meng Q W. The application effect of comprehensive geophysical method in karst cave investigation of Qingshan Provincial Geopark in Jiaxiang County[J]. Geophysical and Geochemical Exploration, 2020, 44(6): 1464-1469.
Ye L, Li F, Huang X N. Application andr esearch of comprehensive geophysical prospecting technology in permafrost exploration of northeast highway project[J]. Journal of Catastrophology, 2018, 33(S1): 25-29.
Gao J H, Cai Y J, Wei Y J, et al. The application of comprehensive geophysical prospecting to karst detection in South-to-North water diversion middle rroute projiect[J]. Chinese Journal of Engineering Geophysics, 2014, 11(4): 533-536.
Meng F S, Zhang G, Chen M J, et al. 3D inversion of high density resistivity method based on 2D high density electrical prospecting data and its engineering application[J]. Geophysical and Geochemical Exploration, 2019, 43(3): 672-678.
Ma J J. Anomaly identification and inference of high density resistivity method:take karst cave exploration and groundwater exploration as an example[J]. Progress in Geophysics, 2019, 34(4): 1489-1498.
尚彦军, 金维浚, 肖刚, 等. AMT 和高密度电法结合探测稻城LHAASO 项目区隐伏断层和基岩埋深[J]. 地球物理学进展, 2021, 36(1):250-257.
Shang Y J, Jin W J, Xiao G, et al. Combination of AMT and high-density electrical method to detect buried fault and bedrock depth in the LHAASO field of Daocheng,Sichuan Province[J]. Progress in Geophysics, 2021, 36(1): 250-257.
陈乐寿, 王光锷. 大地电磁测深法[M]. 北京: 地质出版社, 1990.
Chen L S, Wang G E. Magnetotelluric Sounding Method[M]. Beijing: Geological Publishing House, 1990.
张启生. 音频大地电磁法原理及数据处理[J]. 内蒙古石油化工, 2010(19):26-28.
Zhang Q S. AMT principles and data processing[J]. Inner Mongolia Petrochemical Industry, 2010 (19): 26-28.
Li F, Zhou H F, Tang W Q, et al. Comprehensive study of geophysical and geochemical methods in detecting buried active faults: taking the Yangcaigou fault in Anning River as an example[J]. Progress in Geophysics, 2019, 34(3): 1199-1205.
Gan F P, Lyu Y, Yu L P, et al. The utilization of combined radon and CSAMT methods to detect underground geological structures: a case study of detection in Palian and Fapa profiles, Luxi area, western Yunnan Province[J]. Geological Bulletin of China, 2012, 31(2): 389-395.