by Typhoon » Thu 27 Oct 2005, 13:14:09
1. No, they aren't likely to change that assessment this year.
2. It's very easy to come to different conclusions. The IEA has a much higher estimate of undiscovered oil, which has no basis in reality given that oil discoveries have been steadily declining since the 1960's, without a meaningful trend reversal ever occurring. We started finding less than we consumed in the 1980's. Even in the last few years, there is a noticeable trend. The number of giant fields (>500 million bbl reserves) found declined in the years after 1999 and 2000 until we found none of them in 2004.
Reserves have always increased or stayed steady during the last few decades for two reasons. Number one is that it was found that more oil could be extracted from existing fields than originally thought. This happens when there is a transfer of probable and possible reserves into the proven category, and more possible reserves are added from oil originally in place (OOIP). In some cases, OOIP itself can be expanded based on further knowledge about fields. Number two is that many reserves, particularly in the Middle East, do not exist. Saudi Arabia's 260 billion barrels is massively overstated, and other OPEC countries probably have significantly overstated reserves. There were huge and sudden reserves increases in the 1980's, known as "paper barrels". OPEC countries were practically in a reserves arms race to get a greater share of output quotas.
Simmons has a more realistic idea of decline rates, and how these will soon more than offset the amount added by new projects. In summary, Simmons knows what he is talking about when he shows that an increasingly limited amount of countries are able to increase their production. Speaking of the world resource base generally, optimists like the EIA, IEA, and the USGS count on far more than a 2000 gb URR, largely because they think that technology, like multilateral intelligent wells and 3-D seismic, will allow a much higher percentage of OOIP to be recoverable. In reality, technology like has created a big illusion. In most cases, it temporarily allows higher well flow rates, but this drains the fields more quickly, so that when the declines come, they are very steep. (Remember the North Sea, or the Yibal field in Oman.)
There is at least a 25% chance that we have already passed Peak Oil, and odds are that if it hasn't already happened, it will happen by 2007. Think it's impossible that Peak Oil has happened? Think again. Bad data can obscure the peak until later when the effects are being felt. An example of bad data was the supposed oil glut in 1998. There was a huge "Missing Barrels" fiasco. The IEA was trying to hypothesize where the Missing Barrels could be. In reality, there was no glut, just a glut of bad data. Oil prices tripled in the following two years.