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The blogger's commentary about the U.S. having "2 trillion barrels" of oil is incorrect. No credible data even remotely approaches that figure. For example, the USGS revealed, "The USGS estimate of 3.0 to 4.3 billion barrels of technically recoverable oil has a mean value of 3.65 billion barrels. Scientists conducted detailed studies in stratigraphy and structural geology and the modeling of petroleum geochemistry. They also combined their findings with historical exploration and production analyses to determine the undiscovered, technically recoverable oil estimates."
The most recent proved oil reserves data showed Saudi Arabia with just under 267 billion barrels of crude oil.
From the USGS web site: "The USGS estimates that there may be 3.0 to 4.3 billion barrels of undiscovered, technically recoverable oil in the Bakken Formation (with a mean estimate of 3.65 billion barrels). These are estimates of oil that has yet to be found, but if found, could be produced using currently available technology and industry practices. However, there is no way to know how much oil is in the Bakken Formation or any formation until the area is actually drilled and produced. "
So again, assuming that the EIA is correct at 503 billion barells, and that 50% is recoverable, this will serve US needs at its current rate of import for 69 years, or at its current level of use for 33 years. And that's just one oil field.