The Mangala, Bhagyam and Aishwariya (MBA) fields have gross recoverable oil reserves and resources of over one bn boe.

In January 2004, Cairn added Mangala oil field in Rajasthan to its assets and this, along with the other discoveries in Rajasthan, will form the core of future developments in India. So far 38 discoveries have been made in Rajasthan, showcasing a magnificent growth in Cairn's portfolio.

Mangala, Bhagyam, Aishwariya and other Fields

The Mangala, Bhagyam and Aishwariya (MBA), among others, constitute Cairn, Oil & Gas vertical of Vedanta Limited’s key fields in Rajasthan. These are the three largest finds in Rajasthan. The Mangala field — considered to be the largest onshore hydrocarbon finds in India in more than two decades — was discovered in January 2004. This was followed by discoveries of the Aishwariya and Bhagyam fields. Till date 38 discoveries have been made in the Rajasthan block. Studies indicate that the block has further potential for growth.

As on 31 March 2017, the gross proved & probable Hydrocarbons Initially In Place (HIIP) for the block stands at 6 bnboe. The MBA fields have gross ultimate oil recovery of over 1 bnbbls from primary, secondary and Enhanced Oil Recovery (EOR) methods.


The Mangala field is a world-class asset and has continued to outperform expectations in terms of resource growth and production performance. It has produced at designated peak rates for more than three years. A full field EOR polymer flood has been implemented which has helped in maintaining field’s plateau production. A full field ASP flood is being planned for Mangala, based on successful ASP pilot.


Bhagyam is the second largest field in Rajasthan. The field's oil-in-place volumes have proved better than initial prognosis but deliverability of individual wells has been below expectations. The plan for EOR has been optimized to improve the economics and allow Cairn to undertake polymer flood recovery in the near term.


Aishwariya, the third largest discovery in Rajasthan, commenced production in March 2013. It is the fifth oil producing field from the block. To date, the reservoir performance under waterflood has been in line with prognosis. A revised FDP to commence polymer flood is currently under discussion with JV. The necessary preparations for this programme are underway.

Mangala Processing Terminal

Mangala Processing Terminal (MPT) is spread over an area of 1.6 km2 and is a core asset. The MPT processes crude oil produced from Rajasthan assets. After processing, the crude oil is transported to refineries through an insulated pipeline which continuously heated.

MPTs integrated production facilities support the FDP approved production, which is in line with Cairn's unified Rajasthan block off-take capability.

MPT saw the installation of additional pumps and conversion of a power fluid pump to an injection water pump. A new pipeline was laid from Thumbli saline aquifer to the MPT to further enhance the water injection capabilities.

asset map

The map shows Cairn's assets – one block in Rajasthan, two on the west coast and four on the east coast of India and one in South Africa.