Estimation of Thomsen's anisotropy parameter, delta, using CSP gathers

Pavan Elapavuluri and John C. Bancroft

ABSTRACT

In order to extend the seismic processing techniques to anisotropic media, a measure of the different parameters of anisotropy is required. The purpose of this study is to estimate the Thomsen.s parameter, δ (delta), for transversely isotropic (TI) media. Thomsen.s anisotropic normal moveout equation (NMO) is used to determine δ (delta). It is also shown that δ estimated using common Scatter Point (CSP) gathers is more accurate than those estimated from common mid point (CMP) gathers.

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