Obamot wrote:Of course he could not "stay more" in 2008 than 1998 ...
Well so right .... the proven reserves of 2008 are higher than that of 1998 themselves higher than those of 1988 ...
It's the number in the middle ...
The explanation is simple: technological evolution allowing to drill deeper (deepwater in the 80s it was Science Fiction !!) ... and cost of the barrel which goes up and which makes "provable" reserves which do not. were not before (well considered not economically exploitable).
The calculation must finally be quite clever because mix between geology and economy ...
Finally I think that's it ...