Having two times set free the occasion to grab Cairn India, state-managed Oil and Natural Gas Corp is improbable to work out its pre-emption privileges to discontinue UK's Cairn Energy Plc from vending bulk bet in its Indian wing to Vedanta Resources, according to company source.

ONGC selected not to work out its pre-emption privileges when in the year 2002 Cairn Energy purchased out Royal Dutch Shell's bet in the productive Rajasthan block for only USD 11 million. In 2004-05, it once more set free a chance to obtain the group that by then had exposed the colossal Mangala oil field in the Rajasthan block, for approximately USD 4 billion.

According to extremely placed source, ONGC believes that Vedanta is shelling out too high a cost. It shall not wish to match up it. On the inside, ONGC have determined not to work out its pre-emption right however it wishes that Cairn Energy to be familiar with its rights as an associate.

ONGC posses 30 per cent interest in the Rajasthan chunk, which is at the hub of the USD 9.6 billion Cairn-Vedanta agreement. Cairn India holds the outstanding of the 70 per cent.