The Panna-Mukta (mostly an oil industry) and Mid & South Tapti (gas discipline) are shallow-drinking water fields situated in the offshore Bombay basin. Uncovered by point out-owned Oil and Normal Gasoline Corp (ONGC), they were bid out in 1994 to a consortium of ONGC (40%), Reliance (30%) and Enron Oil & Fuel India Ltd (30%).

In February 2002, BGEPIL obtained Enron’s 30% stake in the joint venture. BGEPIL was subsequently taken over by Shell.