Abstract

This paper describes contemporaneous efforts undertaken in the seismic imaging of sub-basalt features offshore the southwest coast of India particularly focused in the Kerala-Konkan Basin. Data for this basin study originates from a modern 3D seismic survey integrated with long regional 2D seismic lines and with joint regional investigations comprising gravity, magnetic, electro-magnetic and MT data to form the basis for the geological assessment of the key components of deep-water petroleum systems, both along the Tertiary overburden above basalt and, below it, the critical imaging of the Mesozoic lithology. The modern marine 3D Q-surveys conducted with long spreads and processed with state-of-art migration algorithms brought in remarkable improvements for the imaging resolution and coherence of sub -basalt structures these interpreted by pairing images of pre-stack time and depth migrated lines.