We know where all the large and easily-accessible fields are.
But not the less accessible ones. So, as I said, price and technological improvements (driven by price) have the potential to unlock other reserves.
The head of the IEA has said this year that the peak was in 2006.
If anyone doubts then listen: http://www.youtube.com/watch?v=k22q5KZibtI
You'll have to give me the speech details. I can't find a speech on the IEA site saying that, and the other reports contradict that. Unless we are using different definitions of peak.
Hubbert's theory is based on the simple truth that for any given area you will always end up finding the biggest fields first. It has to happen this way, because oil prospecting is a bit like a game of "Battleships" - if you just keep sticking wells in the ground then it is much easier to find large fields than small ones.
Good luck.
No. You are more likely to find the biggest, easily accesible fields first. Not the same thing as the biggest.