Separation of Diffraction Objects in Post-Stack Reverse Time Depth Migration

This paper proposes a new method for imaging small- scale diffraction objects. Its basis is separation of specular reflection and diffraction components of the total wavefield in the migrated domain. Reverse-time migration has been utilized to produce surface dip-angle common image gathers. One uses continuity of diffractions in the dip-angle CIGs as a criterion for separating reflections from diffractions. Synthetic and data examples illustrate efficient application of the method.