Abstract

In a conventional migration ray-tracing is done from the surface and it collects whatever arrives at each depth point but in case of single arrival migration approach, the illumination of certain depth points may be limited. Common reflection angle migration is multi arrival technique that operates in the depth-angle domain and raytracing is performed from image points up to the surface. It integrates all the seismic data points that are reflected/diffracted at the same angle. All possible ray paths are used. By performing a uniform illumination of image points all arrivals are included, hence, both amplitudes and phases are preserved.