Application of wide-field electromagnetic method in shale gas survey in Eastern Kunlun, Qinghai province, China

Abstract

In order to study the distribution of shale gas reservoir in the Babaoshan Basin of Eastern Kunlun, the wide-field electromagnetic (WFEM) survey was carried out to obtain the spatial distribution characteristics of the underground electrical volume resistivity based on the delineation of the scope of the Babaoshan Basin by regional gravity data. The basic characteristics of the basement, basin framework, and extension, vertical change, burial depth of dark mud shale in this area were identified, and the electrical distribution of the Babaoshan mud shale horizon was revealed, which has been proved to be a good geological effect by drilling. The exploration results show that the WFEM has significant effects on the exploration of shale gas occurrence strata, which meets the needs of investigation and evaluation of multi-layered and large-scale shale gas, and plays a good demonstration role in the follow-up shale gas exploration.

Keywords

wide field electromagnetic method / shale gas / Eastern Kunlun / Babaoshan Basin

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