Qatargas is the world's largest liquefied natural gas (LNG) company. It annually produces and supplies the globe with 42 million metric tons of LNG from across its four ventures (Qatargas 1, Qatargas 2, Qatargas 3, and Qatargas 4). It is headquartered in Doha, Qatar, and maintains its upstream assets in Ras Laffan, Qatar. Natural gas is supplied to Qatargas's LNG trains from Qatar's massive North Field, by far the world's largest non-associated gas field. Together with RasGas, it reached a record LNG production of 77 million tones per annum in December 2010.