The drilling, which will be carried out with the assistance of global oil and gas giant BP, will focus on the Andaman, Mahanadi, Saurashtra, and Bengal offshore sedimentary basins. BP's experience in deep water exploration, supported by new seismic technologies, would be of great assistance during the well design and well location for the stratigraphic drilling. The stratigraphic drilling will focus on understanding the geology of the offshore basins and identifying potential hydrocarbon resources which can be taken up for oil and gas exploration in the future. In a significant development, ONGC and Oil India Ltd (OIL) have launched an ambitious exploration campaign in the Andaman ultra-deepwater region. Oil India Ltd., on its part, has made seven oil and gas discoveries over the past four years, with reserves estimated at 9.8 million barrels of oil and 2,706.3 million standard cubic meters of gas.