Abstract

For around past three decades continuous efforts were taken for upgrading the Vindhyan basin to a Category II basin. In this period several exploratory wells have been drilled in the area and presence of gas has been proven without doubt. The thermogenic gas discovered from here with upto 90% Methane having high calorific value (865-970 BTU/cubic feet in Rohtas play) has driven explorationist to keep looking for better prospect in the basin. Several challenges were resolved and new innovative techniques and exploration strategies have been applied in the basin. This paper outlines the exploratory works carried out in the basin by ONGC and the outcome associated with them.