Government rejected Vedanta Cairn Oil & Gas’ application for extension of its Cambay basin CB-OS/2 oil and gas block contract.
ONGC, holding 50% stake, has been directed to take interim control of operations, assets, and data.
Vedanta Cairn had a 40% stake, with Invenire Energy holding 10%.
The block produces about 3,400 barrels of oil per day and 3.4 lakh cubic metres of gas daily.
The PSC, signed in 1998, expired in June 2023; Vedanta-led consortium continued operations while awaiting decision.
Ministry’s rejection comes amid disputes with Vedanta over profit petroleum calculations and objections to its demerger plan.
Vedanta said the block contributed less than 0.3% to its EBITDA.