United States remains largest producer of petroleum and natural gas hydrocarbons

http://www.eia.gov/todayinenergy/detail.cfm?id=26352

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i/ По данным bp statistical review of world energy 2015
Oil Production (Includes crude oil, shale oil, oil sands and NGLs (natural gas liquids – the liquid content of natural gas where this is recovered separately). Excludes liquid fuels from other sources such as biomass and derivatives of coal and natural gas) в 2014 г.
США - 519.9 mln toe (11.644 mbd)
Россия - 534.1 mln toe (10.838 mbd)

ii/ Видимо в США приплюсовали еще биотпливо