Abstract

The primary reflections in onshore seismic data in KGPG basin are always masked by the presence of interbed/ peg-leg multiples. The subsurface imaging in the area has always been a challenging task, especially when multi-vintage pre-stack merging is considered. (Amit Kumar Bhakta et. al. SPG 2017). The basaltic Razole trap and other shallower primary reflectors act as multiple generators in this area. These peg-leg multiples masks the events in Raghavapuram and Synrift sediment sequences and sometimes extends its presence within the basement also. The presence of Razole trap is seen from 500 ms to 2500 ms TWT. Regardless of the type of multiples, they have two common properties that can be exploited to attenuate them with varying degree of success