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| The application of magnetotelluric sounding method to locating of Ciye No. 1 well in the limestone area |
| GAO Yuan, DONG Xu, SHEN Jian-Ping |
| Coal Geological Exploration Institute of Hunan Province, Changsha 410014, China |
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Abstract Drilling in limestone areas often meets karst caves, which may be a big risk. For the purpose of reducing the risk, the magnetotelluric sounding method can be used to detect the karst cave so as to determine the right drilling location. This paper describes the selection of right location of Ciye No. 1 well. By conducting magnetotelluric sounding in the well site, the area containing karst cave under the well site can be detected. Ciye No. 1 well was placed in the area without karst cave, and hence it doesn't meet karst cave during drilling. So, the place of Ciye No. 1 well selected by magnettelluric sounding is right. The right place ensures the safety of the drilling.
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Received: 22 July 2016
Published: 20 August 2017
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