Abstract

Imaging the subsurface in the fold belt area is a difficult task. The structures, near the surface have varied lithologies and difference of weathering degrees causing ambiguity in static corrections. In such area crestal portions are devoid of reflections events associated with poor signal to noise ratio. The authors carried out extensive studies to resolve the issues by applying precision static corrections obtained through stage wise calculation, surface consistent deconvolution which is suitable in such geologically complex areas and coherency based velocity picking with an objective of better imaging of subsurface. This methodology was adopted and applied in Khubal area of Assam Arakan Fold Belt. The study gave encouraging results in compare to conventionally processed sections, which will give more confidence to the interpreter in deciphering a reliable geological model.