You picked up on the same part of the article that jumped out at me: The Saudis are basing their estimates of undiscovered reserves on the USGS. I was flabbergasted at the absurdity of the whole thing.

And if the USGS estimate of 87bbl undiscovered wasn't bad enough, the Saudis upped it to 150bbl, just because everyone knows the USGS estimates are way conservative. This is one of those situations that treads the sometimes fine line between tragedy and comedy.

Re: "The Saudis are basing their estimates of undiscovered reserves on the USGS."

Jesus wept.
Yes - the irony of that is very rich indeed.
I love it--pretending to be able to put a number on something you haven't even discovered yet. (Not to mention invoking abstract dieties like "Tech.")

We still a bunch of superstitious apes, ain't we?