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| STUDY ON THE P-WAVE CHARACTERS OF MEDIA WITH TILTED ALIGNED FRACTURE |
| LIU Bai-hong, ZHOU Wei, MA Zhong-gao |
| Nanjing Institute of Geophysical Prospecting, SINOPEC, Nanjing 210014, China |
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Abstract According to Schoenberg's linear-slip model and Bond transform, the elatica tensor of tilted transform isotropic (TTI) media is getted. Consider the media that contains tilted aligned fracture as TTI media, and then the P-wave phase velocity, PP-wave reflection coefficients and anisotropic elastic impedance of the media with fracture are studied based on the approximate analysis formula of the P-wave phase velocity, PP-wave reflection coefficients and anisotropic elastic impedance of TTI media. P-wave phase velocity, PP-wave reflection coefficients and elastic impedance of the media with fracture are all display stronger anisotropy with bigger incidence angle, but PP-wave reflection coefficients is more sensitive to the incidence angle.
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Received: 28 February 2011
Published: 10 June 2012
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