Based on an analysis and summary of the physical properties of the gas-bearing shale layer in Zhongmu area of Henan Province, the authors used the wide-area electromagnetic exploration technology to detect shale gas in the low-resistance coverage area of the Nanhua Basin, obtained the distribution regularity and characteristics of the stratigraphic resistivity within 5km under the work area, and ascertained the structural distribution of the work area. In addition, the development characteristics of gas-bearing shales were revealed, with the main target layers being the Permian Taiyuan Formation, Shanxi Formation, Upper Shihezi Formation and Lower Shihezi Formation. The results show that, in the low-resistance coverage area, the wide-field electromagnetic method is an effective detection method to obtain the buried depth and distribution range of deep gas-bearing shale in the Nanhua Basin, providing geophysical parameters for the evaluation of favorable zones in the later period and the optimization of shale gas layers in the block.
田红军, 尹文斌, 刘光迪, 蒋永芳, 游文兵. 广域电磁法在低阻覆盖区的应用与评价——以河南中牟为例[J]. 物探与化探, 2020, 44(5): 1025-1030.
TIAN Hong-Jun, YIN Wen-Bin, LIU Guang-Di, JIANG Yong-Fang, YOU Wen-Bing. The application and evaluation of the wide field electromagnetic method in the low resistance coverage area-Exemplified by Zhongmu area of Henan Province. Geophysical and Geochemical Exploration, 2020, 44(5): 1025-1030.
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