Abstract

The objective of seismic data processing is to improve the S/N ratio so that a good seismic section can be provided to the interpreter for a meaningful interpretation of the subsurface geological features such as structural highs, lows, faults, pinchouts, etc., which are of paramount importance in Oil exploration. The accuracy of mapping in general decreases with increasing depth due to inelastic attenuation, wavefront spreading, etc., because of which, generally decrease seismic amplitudes and high frequencies, with increasing time. It is observed that the normal conventional processing may not always be able to bring out subtle features such as pay sands of 3-10 m thickness at large depths for a proper mapping. In this paper the results of the normal processing sequence and the iterative sequence will be presented. The iterative processing sequence shows the improvement in reflection quality of the deeper Eocene reflections.