Gazprom, the biggest extractor of natural gas in the world and the largest company in Russia, accounts for about 93 percent of Russian natural gas production. With reserves of 28,800 km3, it controls 16 percent of the world's gas reserves. With 119 billion barrels of reserves, Gazprom ranks behind only Saudi Arabia, with 263 billion barrels, and Iran, with 133 billion barrels, as the world's biggest owner of oil and oil equivalent in natural gas. http://fuelstudies.org/gazprom_opec_gecf.html