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《Journal of Jilin University(Earth Science Edition)》 2012-04
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Elastic Impedance in Fractured HTI Media

Dou Xi-ying1,Han Li-guo1,Liu Chun-cheng2,Yang Xiao-chun2 1.College of GeoExploration Science & Technology,Jilin University,Changchun 130026,China 2.China Offshore Oil Corporation Research Institute,Beijing 100027,China  
The fillings property and distribution density of cracks and vs/vp of wall rocks are introduced into P-wave and converted SV-wave elastic impedance equations in cracked horizontal transversely isotropic media,and normalization response characteristic of elastic impedance is simulated.The subsequent numerical simulation results show that elastic impedances in fractured media are azimuthally anisotropic and increase with the crack distribution densities;the range of elastic impedance for P-wave and converted SV-wave are in great differences;the elastic impedance differences may be considered as an identification of gas or water of crack fillings for the typical sandstones.
【Fund】: 国家科技重大专项项目(2011ZX05025-001-07)
【CateGory Index】: P631
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