"billion barrels of oil"). 2. LOF = large oil fields (>100 million barrels of oil equivalent): GOF = giant oil fields (>500 million barrels of oil equivalent). Notes References Stuart D. Goldman (2006) CRS Report for Congress Bernard A. Gelb (2006) Russian Oil and Gas Challenges Energy Information Administration (EIA). Russia Country Analysis Brief, Yukos Receives Bill for Nearly $1 Billion in Back Taxes October 2004 External links Rosneft site - English language Oil companies of Russia Natural gas companies of Russia Oil companies of the Soviet Union Natural gas companies of the Soviet Union Yukos Rosneft