Muting the primary and multiple reflections

In order to estimate the multiples we need to eliminate the primaries as much as possible, even if that implies underestimating the multiples. On the other hand, since the estimate of the primaries is only used as a weight function for the adaptive matching of the multiples, in estimating the primaries we would prefer to overestimate the multiples. The choice of the mute pattern is obviously important and requires careful examination of the SODCIGs.

 

cmp_comp
Figure 5 Comparison between a CMP of the original data (a) and the corresponding CMP after migration-adjoint migration with the exact velocity (b).