Abstract

Cauvery Basin is a Pericratonic rift basin, on the East Coast of India. The basic architecture consists of en- echelon asymmetric half-grabens, separated by basement horsts. It has 7-8 km thick syn-rift and post rift stratigraphic succession deposited as a consequence of basin evolution since Late Jurassic (145Ma). An understanding of basin evolution and the related petroleum system is an essential step in hydrocarbon exploration and exploitation. In Tranquebar sub-basin, the flanks are HC rich locales but other prospects drilled within the sub-basin are dry, in spite of having good TOC and porosity retention even on deep burial. 2D- Petroleum System Modeling study along a geological cross section was the basis for paleohistory reconstruction and to assess hydrocarbon prospectivity. It traces the GME cycle through geologic time and leads to better understanding of hydrocarbon proclivity of the area.