We know that the US pays $ for oil, that is her currency of course. The point at issue relates to other peoples' use of the "petrodollar", and I believe that many commentators - not to mention many conspiracy theorists - are labouring under a misapprehension as to the importance of the $ for denominating oil prices.

That having been said, an unHoly Trinity of:

(a) US massive over consumption of oil;
(b) continuing growth of non-US global oil demand; and
(c) the fact of a maximum level of global oil production (whether it is called a "peak" or a "plateau" is semantics);

will IMHO lead to a breakdown (slow motion crash if we are lucky), in the current global financial system and arising out of a discontinuity in the Dollar/Oil relationship. Within 2 to 5 years, I believe.

I don't think that the charts you have kindly supplied are inconsistent with that thesis.

"Any economic unit can emit money. The serious problem is to get it accepted" Hyman Minsky