@blatham,
production wise george-ob is correct. Reserve wise, Im not sure because the middle east has not yet really identified its Silurian'Devonian; and Early Miss "Frackable gas and oil plays as of yet.
I suspect that th Russian fields will make us look teeny. So theres a reason to go for renewables eaven faster,because we have anywhere from 100 to 200 years of frackable fuel in reserve (we are still going deeper into our Ordovician an Cambrian Formations(maybe even pre cambrian Grenville stuff. Once we are done, the other parts of the world will be the production giants again Ive been told (hypotheses only).
I feel that we will be in a bigger crunch for lithium an some RRE's that will be used in advanced battery technology. (Until iron lattice batteries are perfected as a hybrid).
3D solr pnels are getting so good that collector sizes and , hence, overall outputs are becoming smaller (collectore) and more powerful and long lasting.