广域电磁法在我国南方海相页岩气勘探中的应用

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Bibliographic Details
Published in应用地球物理：英文版 Vol. 14; no. 3; pp. 441 - 448
Main Author 杨学立 李博 彭传圣 杨洋
Format Journal Article
LanguageEnglish
Published 2017
Subjects
广域电磁法（WFEM）
总有机碳含量（TOC）
极化率
电阻率
页岩气
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ISSN1672-7975
1993-0658

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Bibliography:Yang Xue-Li1, Li Bo1, Peng Chuan-Sheng1, and Yang Yang2（ 1. China Huadian Engineering Co., LTD, Beijing 100160, China. 2. School of Geoscience and Info-Physics, Central South University, Changsha 410083, China.）
wide-field electromagnetic method, shale gas, resistivity, induced polarization, total organic carbon
11-5212/O
In an effort to reduce the shale gas exploration risks and costs, we applied the wide-field electromagnetic method （WFEM）, because of its strong anti-interference capability, high resolution, ability to conduct exploration at large depths, and high efficiency, to the Bayan Syncline in the South Huayuan block, Hunan Province. We collected rock samples and analyzed their resistivity and induced polarization （IP） and built A series of two-dimensional models for geological conditions to investigate the applicability of WFEM to different geological structures. We also analyzed the correlation between TOC of shale and the resistivity and IP ratio to determine the threshold for identifying target formations. We used WFEM to identify the underground structures and determine the distribution, depth, and thickness of the target strata. Resistivity, IP, and total organic carbon were used to evaluate the shale gas prospects and select favorable areas （sweet spots） for exploration and development. Subsequently, drilling in these areas proved the applicability of WFEM in shale gas exploration.
ISSN:1672-7975
1993-0658