Seismic Processing in the Inverse Data Space, Removal of Surface–Related and Internal Multiples

摘要

Considering the dominant role of multiple scattering in seismic data, it is proposed to replace data matrix P by its inverse P-1 before starting seismic processing. Making use of the feedback model for seismic data, it is shown that surface-related multiple scattered energy is mapped onto the zero time axis of the inverse data space. The practical consequence of this property may be significant: multiple elimination in the inverse data space simplifies to removing data at zero time only. After a wavefield redatuming step towards the next important multiple generating boundary, the process can be repeated for internal multiples. Thus, moving to the inverse data space may lead to a fundamental change in the way we solve the surface-related and internal multiple problem.