Azimuthally Anisotropic AVO and Sand-Shale Content

l azimuthal AVO from logs using Ruger’s approach and compare it to observed azimuthal AVO in seismic data. This forward modelling method shows that certain (but not all) fault blocks exhibit the same azimuthal AVO trend as those modeled from log data, whilst others have a more isotropic trend. We derive a relationship that predicts the Thomsen Parameter Gamma solely as a function of the shale volume, and then use this relationship to explain variations in the azimuthal anisotropy observed in the seismic data at Stybarrow.