Even with conventional oil, though, 11th place worldwide seems reasonable, particularly compared to neighboring countries (behind Nigeria and ahead of Kazakhstan, China, and Qatar). Don't forget that the U.S. still has very active oil production in Alaska, Southern California, Texas/Oklahoma, and the offshore Gulf of Mexico.
https://en.wikipedia.org/wiki/Oil_shale_reserves
https://en.wikipedia.org/wiki/Oil_shale_economics
Even with conventional oil, though, 11th place worldwide seems reasonable, particularly compared to neighboring countries (behind Nigeria and ahead of Kazakhstan, China, and Qatar). Don't forget that the U.S. still has very active oil production in Alaska, Southern California, Texas/Oklahoma, and the offshore Gulf of Mexico.