And this article speaks solely of conventional oil. There's a heck of a lot of non-conbventional stuff too that is presently being worked, such as the huge oil sands deposits up in Canada. There are a few hundred billion barrels worth, of which easily 10% is economically recoverable right now. That's why there's been a huge boom in Calgary/Alberta/Ft McMurray, as Suncor, Syncrude, RD, BPA, et al are investing billions there. Cost of mining/extracting the hydrocarbon has dropped to where it makes economic sense.
Australia too has some 20-30 billion barrels worth of oil shale that is beginning to be worked... and that has the nincompoops at Greenpiss busting a gut.
.........Australia too has some 20-30 billion barrels worth of oil shale .......
Many barrels within a 100 miles of Rifle CO. when and if the price gets correct.