REVERSE TIME MIGRATION AND MULTIPLE MIGRATION BASED METHODS

摘要

A device, medium and method for generating an optimal image of a subsurface of the earth. The method includes receiving (702) measured seismic data D related to the subsurface of the earth, wherein the measured seismic data D includes primary data D_p and multiple data D_m; calculating (704) estimated multiple seismic data d_m based on (i) a reverse time multiple demigration operator M_m and (ii) an initial image r of the subsurface; generating (706) an objective function E that includes a first term defined by a cross-correlation of the measured multiple data D_m with the estimated multiple seismic data d_m; and calculating (708) the optimal image of the subsurface by maximizing or minimizing the objective function E.