Paper Summary
Creating an angle gather is a conceptually simple process of plotting reflection amplitudes along the angle. Reflection or opening angle can be directly calculated from source and receiver wave propagation directions or source propagation direction and dip of the reflector. We studied a cost effective approach to generate 3D Reverse Time Migration (RTM) angle gathers from source wave propagation direction and dip information. This is a mapping process of the shot image onto an angle and azimuth plane using the most energetic arrivals and their amplitudes and propagation directions.
