Residual migration

Image enhancement is one of the most critical operations of the entire technique. Several methods can in theory be used to enhance the migrated image, for example, residual moveout and residual migration. The major difference between the two is that residual moveout does not allow energy to move among neighboring horizontal locations, while residual migration does. Sava (1999) shows how prestack Stolt residual migration can be employed to enhance migrated images described as angle-domain common-image gathers. In this paper, we use residual migration for image enhancement, but concentrate more on the results related to inversion and slowness update.