Cairn, Oil & Gas, a vertical of Vedanta Limited, contributed ~ 25 percent to India's domestic crude oil production in FY 2017-18. With its affiliates, the vertical has been operating for over 20 years, playing an active role in developing India's oil and gas resources. Till date, Cairn has opened 4 frontier basins with numerous discoveries, of which, 38 are in Rajasthan alone.
With a portfolio of 6 blocks, of which 5 blocks are in India and one in South Africa, Cairn has made over 50 hydrocarbon discoveries in the last decade and operates the largest producing oil field in the Indian private sector.
The Mangala field in Rajasthan, discovered in January 2004, is the largest onshore oil discovery in India in more than a decade. Mangala, Bhagyam and Aishwariya fields, the three major discoveries in the Rajasthan block, together have gross hydrocarbons in place of about 2.2 billion barrels of oil equivalent.
Oil and gas are currently being produced from Rajasthan, Ravva in Andhra Pradesh and Cambay in Gujarat.