Iranian Minister of Petroleum Mohsen Paknejad stated that Russian firms are collaborating with Tehran to develop Iran's oil fields .

EghtesadOnline: Managing Director of National Iranian Oil Company (NIOC) Ali Kardor said oil fields of the country would be developed with three models of agreement.

EghtesadOnline: Deputy Petroleum Minister Ali Kardor said on Tuesday that the ministry have signed seven 'confidentiality' contracts with international oil companies to carry out exploration about the oil fields .