Abstract

Flooding the datum overcomes some of the problems present in routine image processing while recording the seismic data on a rugged surface topography. The standard CDP processing algorithms assume that data are recorded on flat surface. The static correction applied routinely to compensate for topography assuming that wave propagation vertically down below and ray trace bending is minimum. The statics calculated with precision statics correction method which envisages stage wise computation of statics correction and its quality check at each stage and the statics applied to upward continue the data to a flat datum above the highest topography. This methodology was applied on 2D seismic data in over thrust area of Himalayan foothills. The image obtained after flooding the datum exhibits better reflector continuity and more accurately represents the true structural image.