“…The migrated images will then be pictures of the true in-situ subsurface reflectivity -albeit bandlimited by an implied filter which embodies the wavelet we seek to extract. Since modern inversion/migration methods are closely related to Bayesian updates for the subsurface velocity model based on common image gathers (Tarantola, 1984;Gouveia and Scales, 1998;Jin et al, 1992;Lambare et al, 1992Lambare et al, , 2003, it would be desirable if well log data were directly incorporated into the migration formula. This is not commonly done, for reasons that may relate primarily to the segregation of workflows, but also technical difficulties.…”