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Numerical modeling of the seismic wave-field in cracked media with liquid

CHENG Bing-jie1,LI Xiao-fan1,XU Tian-ji2(1.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;2.Deyang Branch Institute,Exploration & Production Research Institute,Southwest Branch Co.,SINOPEC,Deyang 618000,China)  
The practice of oil exploration proved that the cracks are space of the oil and gas and channels of them to move,thereby the wave-field of cracked anisotropic media draw more and more attention.Many rock physicists and geophysicists proposed many theories and technique to describe the information of cracks.According to the theory of the Eshelby-Cheng anisotropic cracked models,we obtain the elastic parameters of the anisotropic cracked media,and establish the wave equation of the Eshelby-Cheng anisotropic cracked media,apply time-staggered Pseudo-Spectral method to modeling the cracked media with liquid,and study the propagation law and characters of the seismic waves in cracked media with liquid.The results proved that it's efficient to modeling the wave-field by time-staggered Pseudo-Spectral method.And the wave-field is more complex in anisotropic media than in isotropic media.
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