According to the displacement theory,authors derived the exact scattering coefficients of reflected P wave,reflected S wave,transverse P wave and transverse S wave when P and S waves travel up and down through the boundary between the two HTI media. This expression can solve the problem of the inaccurate coefficient caused by the formation with great physical differences and the large offset. Through the derived formula,drew the AVO scattering curves of HTI coalbed. Crack density,aspect aperture and crack f...
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