It's a global commodity. The reason there likely won't be a shortage in the U.S. has little to do with our production volumes, and has more to do with the fact that we're rich enough to be able to afford the higher prices when many other countries will have to forgeo using oil.
But if we weren't a rich country and we couldn't afford to pay a higher price for oil than many other nations on earth, we would produce and export oil to people that can pay more.
Ireland during the famine produced enough food to feed every person. But much of it was exported to other places, that could afford to pay a higher dollar amount to survive.