Anisotropic Analysis and Processing of ALBA 4C OBC Data

L-16 ANISOTROPIC ANALYSIS AND PROCESSING OF ALBA 4C OBC DATA H. DAI 1 X-Y. LI 1 and M. MACLEOD 2 Summary 1 In this paper we present the anisotropic analysis and processing results from the Alba 3D-4C OBC data. The results show strong evidence of both azimuthal and polar anisotropies. For the azimuthal anisotropy 20ms time-delay was identified from a shallow PS event at PS two-way time 1.4s and the principal direction is about 40 0 from the inline direction. The polar anisotropy estimated from a non-hyperbolic moveout analysis indicates an average 30% converted-wave anisotropy which yields about 2.0% P-wave