I'm going to post and link a few informational tidbits..but the best response would probably be to have Colin Campbell refute them...
These dates are predicted upon the URR, or Ultimate Recoverable Reserves, or ultimate reserves...IEA, relied upon USGS data that had no basis in reality...purely fanciful...
EnergyBulletin - On Ultimate Reserves
APSONewsletter016
EIALongTermOilEstimate(2000)
TableofForecastsofWorldOilSupply
$this->bbcode_second_pass_quote('', 'T')he Age of Oil
The total current reported reserves of these five Middle East countries is 696 billion bbl, and production to date is 255 billion bbl (including Neutral Zone and war loss in Kuwait).
But if the 696 billion bbl represents total discovered reserves as the foregoing argument suggests, it means that the real reserves are only 441 billion bbl.
OGJ estimates world reserves for 2004 at 1,278 billion bbl. If we remove the Middle East anomaly discussed above and the 170 billion bbl that were added in respect to Canadian oil sands in 2003, we arrive at a new, more realistic world total of 853 billion bbl.
Some 65 published estimates of the ultimate recovery of conventional oil—many by major oil companies and legitimate government institutions—give an average of 1,930 billion bbl.
The world has so far produced 944 billion bbl, and realistic reserves on the above basis stand at 853 billion bbl, meaning that there are 133 billion bbl yet-to-find if we accept the ultimate estimate.
New discoveries, especially of critical giant fields, have been falling for 40 years, as confirmed by ExxonMobil Corp. being down to less than 10 billion in reserves last year. It suggests that this calculation is not altogether unreasonable.
It sounds as if the world has used about 49% of its endowment of conventional oil, meaning that it is now close to the midpoint of depletion, which normally corresponds with peak production. Peak itself is not a particular significant event but the relentless downward slope that follows it most certainly is.
We can say, in other words, that the world has reached the end of the First Half of the Age of Oil, which lasted 150 years since the first wells were drilled in Pennsylvania and on the shores of the Caspian Sea.
ASPOApr2005