Proven Oil Reserves at current consumption rates...I don't make up these numbers...they are from the best sources we have and you should know this...the U.S. "Energy Information Agency" (EIA) is THE SOURCE that everyone relies on...also British Petroleum (BP) is another very trusted source...btw, the estimates for Alaska's 'ANWR' field range from 4 to 11 Billion Barrels of oil...given our ~7 BB/yr consumption, that gives us a few months to a little over a year "Extra"...any other numbers for "Unproven Reserves" get more and more speculative.
The Billionaire Oil Baron's comments are not unexpected...his ox is being gored and he doesn't like it...totally understandable...BUT, the facts remain as I just stated...
Link: https://www.worldometers.info/oil/us-oil/