U.S. crude oil production, particularly from light sweet crude oil grades, has rapidly increased since 2011. Much of the recent growth has occurred in areas such as the Permian region in western Texas and eastern New Mexico, the Federal Offshore Gulf of Mexico, and the Bakken region in North Dakota and Montana.

The oil price decline in mid-2014 resulted in U.S. producers reducing their costs and temporarily scaling back crude oil production. However, after crude oil prices increased in early 2016, investment and production began increasing later that year. By comparison, Russia and Saudi Arabia have maintained relatively steady crude oil production growth in recent years.

Saudi Arabia's crude oil and other liquids production data are EIA internal estimates. Russian data mainly come from the Russian Ministry of Oil, which publishes crude oil and condensate numbers. Other sources used to inform these estimates include data from major producing companies, international organizations (such as the International Energy Agency), and industry publications, among others.