| Popis: |
Building on previous work reported elsewhere [Zhou, 2001, 2002, O’brien, 2001], we present some new developments in our Prestack Wave Equation Depth Migration and the results obtained by applying it to both classic and newly acquired SEG/EAGE 3-D Salt Model datasets. The migration improvements include a new imaging condition that addresses amplitude and obliquity issues such as source ghosting and the requirements of “true-amplitude” imaging. The new dataset is composed of 63 OBC-like shots with higher frequency content and attenuated surface-related multiples. The coverage contains a full azimuthal range and 6.5km of offset. We believe the results represent a level of sub-salt imaging quality rarely seen from this model in the published literature. |
