Using P- and SV-Wave VSP Data for Estimating Local Seismic Anisotropy Parameters, δ And ƞ, In VTI Media With Lateral Heterogeneity in the Overburden

Tamimi, Naser (Colorado School of Mines) | Davis, Thomas L. (Colorado School of Mines)

OnePetro 

Summary

Anisotropy parameters provide vital information for surface and borehole seismic data processing, imaging and interpretation. The objective of this research is to introduce a reliable technique, for estimating local seismic anisotropy using both P- and SV-wave from VSP data in VTI media where the overburden is heterogeneous.

The technique uses P- and SV-wave vertical slowness components and polarization angles in VTI media to estimate Thomsen parameter δ and anellipticity parameter ƞ. The proposed method is applied to a synthetic VSP data with anisotropic properties. The estimated δ and ƞ parameters, using both P- and SV-wave data, show better correlation with anisotropy parameters in the model compared to the technique that only uses P- wave data.