U.S. petroleum and natural gas production increased by 16% and by 12%, respectively, in 2018, and these totals combined established a new production record. The U.S. surpassed Russia in 2011 to become the world's largest producer of natural gas and surpassed Saudi Arabia in 2018 to become the world's largest producer of petroleum. According to the U.S. Energy Information Administration (EIA), last year’s increase in the U.S. was one of the largest absolute petroleum and natural gas production increases from a single country in history.
For the U.S. and Russia, petroleum and natural gas production is almost evenly split; Saudi Arabia's production heavily favors petroleum. Petroleum production is composed of several types of liquid fuels, including crude oil and lease condensate, natural gas plant liquids (NGPLs), and bitumen. The U.S. produced 28.7 quadrillion British thermal units (quads) of petroleum in 2018, which was composed of 80% crude oil and condensate and 20% NGPLs.