Cairn India had written to the petroleum ministry about its plans for the block, said a person close to the development.
Of the 25 discoveries made by the company in Barmer, two are producing.
The Mangla field is producing 150,000 barrels, while another 25,000 is coming from the Bhagyam field.
Another field, Aishwarya, would be contributing 10,000 barrels in the coming years, while Bhagyam would add 15,000 barrels.
This would take the Barmer output to 200,000
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