Abstract

Seismic prestack depth imaging is widely applied to compensate for distortions caused by complex overburden. Comparing to the prestack time imaging it is capable to correct recorded wave fronts for nonhyperbolic deformations caused by local, mid to short wavelength size, anomalies in overburden. That is accomplished by tracing rays, usually bent at interfaces, for individual offsets with account for VTI anisotropy. However, the need for seismic imaging of complex fault pattern reservoirs forced the next step of advancing the imaging technology: account for azimuthal anisotropy.