High-resolution Moveout Transform; a robust technique for modeling stackable seismic events

Hassan Masoomzadeh, Anthony Hardwick
2012 SEG Technical Program Expanded Abstracts 2012   unpublished
We propose a time-domain approach to transform a gather of pre-stack seismic data into an ensemble of highlyresolved traces in the transformed domain. Using a range of various velocity functions in a standard NMO correction routine, we iteratively search for those velocity functions corresponding to the highest ratio of stackable seismic energy among their neighbouring functions, and remove the corresponding energy while updating a stacked trace in the transformed domain. Application of
more » ... out functions helps to avoid the NMO stretching distortions. Application to synthetic and real data shows improvements in resolution and performance. Compared with existing high-resolution Radon techniques, a superior resolution is achieved, resulting in less ambiguous aperture compensation and more accurate reconstruction of stackable seismic events, particularly multiples in the near offset zone. Combinations of the above varieties can also be used in order to merge the advantages of both: 3) Mixed Functionality:  Every other p nmo -trace is obtained using either constantvelocity or constant-moveout function alternatively  Both primaries and multiples may appear more focused  Leakage of energy into the alternative group may be observed © 2012 SEG
doi:10.1190/segam2012-0658.1 fatcat:wswfpv3jojgfhfokcxgs5xrgoi