I bet you some conservation group will claim that an endangered frog lives in the region so it will be untappable.
Just like diamonds, manufactured scarcity will keep prices high.
GAO: Recoverable Oil in Colorado, Utah, Wyoming ‘About Equal to Entire World’s Proven Oil Reserves’ … The Green River Formation – an assemblage of over 1,000 feet of sedimentary rocks that lie beneath parts of Colorado, Utah, and Wyoming – contains the world’s largest deposits of oil shale. USGS estimates that the Green River Formation contains about 3 trillion barrels of oil. At the midpoint of this estimate, almost half of the 3 trillion barrels of oil would be recoverable. This is an amount about equal to the entire world’s proven oil reserves.