Structural Features Controls of Coalbed Methane (CBM) Accumulation in the Weibei CBM Field, Southeastern Ordos Basin

Abstract:

Based on the structural interpretation of seismic data, we analyzed the gas controlling effects of folds and faults on CBM accumulation qualitatively. Meanwhile, we discussed the lateral sealing ability of the major overthrust faults quantificationally by bringing in “Shale Gouge Ratio (SGR)”, which is proved to be applicable in analyzing the gas controlling effects of faults. The results of the theoretical analysis show that overthrust faults have better sealing effects than normal faults, and synclines are more conducive to CBM accumulation than anticlines. The SGR computed results show a high consistency with the distribution characteristics of the CBM gas content. In all, the folds have little controlling on CBM accumulation, and the faults play a major role in the gas controlling on CBM accumulation in the Weibei CBM field.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 79-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.79
• Online since: June 2014
• Authors: Ya Dong Bai*, Tao Tao Yan, Jian Guo Wu, Yong Luo
• Keywords: Coalbed Methane (CBM), Folds and Faults, Shale Gouge Ratio (SGR), Structural Features

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