Gazprom Neft Board As of 31 December 2012, Gazprom Neft and its subsidiaries hold the mineral rights to 74 license areas located in 11 regions of Russia. In Serbia, the Gazprom Neft's subsidiary Naftna Industrija Srbije, holds 69 licenses. Based on an audit of reserves conducted by DeGolyer and MacNaughton and according to the Petroleum Resources Management System standards, the company's proven reserves at the end of 2012 totaled 1.2 billion tonnes of oil equivalent, and its reserve replacement ratio was over 286%. Most of the company's oil production operations in Russia are carried out by three subsidiaries: Gazpromneft-Noyabrskneftegaz, Gazpromneft-Khantos and Gazpromneft-Vostok.
Kovykta field the field to state-owned Rosneftegaz, but failed. On 1 March 2011, Gazprom bought Rusia Petroleum's assets, including rights for the Kovykta field, for $711 million. The reserves of Kovykta amount to 2 trillion cubic meters of natural gas and more than 83 million tons of gas condensate. The period of active gas production in the Kovykta field is expected to be 30 years, and the period of field development about 50 years. The field was developed by Rusia Petroleum, 62.9% of which is owned by TNK-BP. 24.99% is owned by the power generating company OGK-3. The Kovykta field is considered