地质学报（英文版）2000，Vol.74Issue(2)：425-428,4.
Application of Seismic Anisotropy Caused by Fissures in Coal Seams to the Detection of Coal-bed Methane Reservoirs
Application of Seismic Anisotropy Caused by Fissures in Coal Seams to the Detection of Coal-bed Methane Reservoirs
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作者信息
- 1. Research Institute of Coal Geophysical Exploration, Zhuozhou 072750, Hebei;Research Institute of Coal Geophysical Exploration, Zhuozhou 072750, Hebei;Research Institute of Coal Geophysical Exploration, Zhuozhou 072750, Hebei;Research Institute of Coal Geophysical Exploration, Zhuozhou 072750, Hebei
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摘要
Abstract
Coal-bed methane is accumulated in micro-fissures and cracks in coal seams. The coal seam is the source terrace and reservoir bed of the coal-bed methane (Qian et al., 1996). Anisotropy of coal seams is caused by the existence of fissures. Based on the theory of S wave splitting: an S wave will be divided into two S waves with nearly orthogonal polarization directions when passing through anisotropic media, i.e. the fast S wave with its direction of propagation parallel to that of the fissure and slow S wave with the direction of propagation perpendicular to that of the fissure.This paper gives the results of laboratory research and field test on the S wave splitting caused by coal-seam fissures. The results show that it is feasible to detect fissures in coal seams by applying the converted S wave and finally gives the development zone and development direction of these fissures.关键词
coal-bed methane/coal-seam fissure/anisotropy/splitting of S waveKey words
coal-bed methane/coal-seam fissure/anisotropy/splitting of S wave分类
天文与地球科学引用本文复制引用
..Application of Seismic Anisotropy Caused by Fissures in Coal Seams to the Detection of Coal-bed Methane Reservoirs[J].地质学报（英文版）,2000,74(2):425-428,4.
