Common Azimuth Wavefield Extrapolation Migration

In areas where seismic acquisition is characterized by limited-azimuth geometries (for example, with regular towed-streamer marine acquisition), it may not be necessary to use a no-compromise azimuth compliant WEM solution to generate final images or gathers for model updating.

WesternGeco offers a Common-Azimuth (CAz) implementation of WEM that outputs both full volume angle gathers and final images, and incorporates VTI anisotropy.

CAz WEM enables the efficient generation of images and angle gathers for surveys characterized by a limited-azimuth acquisition footprint. It helps provide the benefits of complex imaging using shot-profile WEM in a cost effective and accessible manner for geological provinces around the world.