The azimuthal analysis after OVT-PSTM can include both azimuthal NMO (AzNMO) and azimuthal amplitudes (AVAZ). Performing azimuthal NMO produces several velocity attributes (vfast, vslow, azimuth vfast, vfast-vslow) which provide information about stress and fractures. Mathematical components of these velocity attributes can produce “direct fracture indicators” within the reservoir. These attributes can be co-rendered and mapped on a horizon basis to streamline interpretation. In addition, they can be integrated with additional attributes (curvature, etc.) and physical data (wells, production, cores, FMI logs, etc.).
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Correcting and measuring anisotropy (VTI, HTI) in wide-azimuth recorded seismic data can provide valuable information to drilling engineers regarding natural fracture systems, in-situ stress fields, and geomechanical rock properties. Calibrating anisotropy attributes with reservoir properties can improve the completion process and hydraulic fracture stimulation.