OJSC Gazprom, (Russian: Газпром; long version: Открытое Aкционерное Oбщество Газпром; sometimes transcribe as Gasprom) is the largest Russian company. Gazprom is publicly traded as RTS:GAZP MICEX:GAZP LSE: OGZD; Russian: ОАО Газпром. Gazprom is the largest extractor of natural gas in the world. With sales of US$31 billion in 2004, it 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 (as of 2004, including the Shtokman field.) After acquisition of the oil company Sibneft, Gazprom, with 119 billion barrels (18,900,000,000 m³) of reserves, ranks behind only Saudi Arabia, with 263 billion barrels (41,800,000,000 m³), and Iran, with 133 billion barrels (21,100,000,000 m³), as the world's biggest owner of oil and oil equivalent in natural gas.