U.S. production of hydrocarbon gas liquids (HGLs) reached 5 million barrels per day (b/d) in 2018, an increase of more than 0.5 million b/d (13%) over 2017 levels. HGLs accounted for over a quarter of total U.S. petroleum products output in 2018.
The increase in HGL production since 2010 is largely a result of growing domestic natural gas production. In 2018, U.S. natural gas production, measured as gross withdrawals, averaged 101.3 billion cubic feet per day (Bcf/d), a 38% increase over 2010 levels and the highest volume on record. As natural gas production has grown, an increasing share of HGLs are produced at natural gas processing plants, from about 75% in 2010 to nearly 90% in 2018.