Oil Minister Dharmendra Pradhan said bidding for the Discovered Small Fields Bid Round will open on July 15 and last date of bidding is October 31.
The fields offered hold 625 million barrels of in-place oil and gas reserves.
Last exploration licensing round concluded in March 2012. That was the Ninth round of bidding under the New Exploration Licensing Policy (NELP). A total of 256 block were awarded in the nine rounds of NELP.
As many as 10 discoveries in the Assam shelf.
The government took away these discoveries from ONGC as it could not develop them because of small size and unviable price.
But in the bidding round, the government is offering complete pricing freedom and ONGC too can bid to get back its discoveries.
The biggest discovery among the lot is the D-18 in Mumbai Offshore that alone holds 14.78 million tonnes of in-place oil reserves.
Among the gas discoveries, the largest is ONGC's B-9 find in the offshore Kutch basin that has an in-place reserve of 14.67 bcm.
Spelling out salient features of the Marginal Field Policy, UP Singh sources said the auction will be done on a new revenue sharing model where bidders will be asked to quote the revenue they will share with the government at low and high end of price and production band.
The PSC regime allowed all their investments to be recovered from sale of oil and gas before profits are shared with the government. This model was criticised by CAG which said it encouraged companies to keep raising cost so as to postpone higher share of profits to the government.
Also, single licence for exploration and exploitation of conventional and non-conventional hydrocarbons will be issued and operators will have freedom to sell oil and gas on arms on arms length market price, he said, adding that there would be no cess on crude oil.
