Prestack slant stack migration with PSPI produces good migration sections with both synthetic and field datasets. The slant events and diffractors are migrated to their original positions. This algorithm performs migration well even when there are lateral velocity variations present.
When, after the prestack slant stack migration, the seismic events are lined up at the correct position in the CMP gathers, we can do AVO analysis more precisely by using linear regression in the domain, and no NMO correction is necessary. This prestack slant stack migration collapses diffractions, and focuses bright spots, thus increasing confidence in selecting drilling locations.