Ha...you need to get out of Texas a bit more....
213 billion barrels is small potatoes....
The USGS report from January gives our Green River Formation 3TRILLION barrels of oil....with 1 Trillion barrels recoverable with today's technology.
As a side comment...the worlds known reserves of oil weigh in at about a Trillion barrels......we just trebled it.
The problem with the Green River Formation is: Will our wonderful leaders ever let even 10% be extracted?