Damien,
Campbell gets credibility for being the leader of the peak oil movement. This is different from saying his predictions for the date of peak have credibility. He has cried wolf about imminent peak, and thus, his calculations have lost credibility. However, he personally gets the credit for bringing this issue and keeping this issue in the public debate.
Was is wrong for Campbell to constanly be crying imminent peak for the last 20 years? No. Here's why - according to the Hirsh report to the DOE, it would take the United States 20 years to avoid serious economic repercussions associated with world oil peak, and thats if the U.S. started an immediate crash program. So, for 20 years the world has done nothing to prepare. Therefore, I think its fair for Campbell to be trying to get the world's attention.
More and more people are now agreeing with Campbell that a world oil peak is likely, probably within the next 10 years. PFC Energy, for example, forecast a world oil peak between 2012 and 2015. Saudi Aramco, just last week, said world oil production would peak at 95 mbpd in about 2015.
EnergyBulletin Exxon and BP, two world oil majors, are running websites devoted to the transition to sources of fuel other than oil. Greenspan, just this week, in a speech in Japan, said the world would begin transitioning to a new energy source. So, after all these years, Campbell is finding good company. However, if world oil does peak before 2015, the world should have listened to Campbell back in 1990.
All that being said, there have been some areas where Campbell has been pretty accurate in his predictions. For example, he predicted light sweet to peak in 2004. That probably happened.
Light Sweet Peak
NonOpec Majors Peaked
Also, I did a summary of some of Campbell's earlier predictions in a previous thread. Here they are:
In short, Campbell has been more accurate in predicting some political/economic events than he has been in calculating reserves or estimating daily production of oil. As Lynch points out, Campbell's calculations of reserves keeps going up. For example, 1996, Campbell calculated world oil production would peak at less than 70mbpd. His 1996 # for world oil was 1750 gb. The world now pumps about 84 bpd and ASPO now calculates about 1850 gb (ASPO April 2005 newsletter).
However, here are some of Campbell's previous predictions of fallout from rising oil, which he says are caused by depletion issues. These are summarized, with my comments in parenthesis as to the accuracy:
1996 Campbell states:
(1) North Sea would peak in 1998 and then have about 8% depletion rate(peaked in 99 and has depletion rate of about 5-6%);
(2) Iraq will be needed, meaning "embargo relaxed", to produce all out beginning in "about" 2000. (Iraq attacked in 2003, but can't get it pumping all out).
(3) Graph shows 2005 oil at $30pb (price is now over $50);
(4) Graph shows total world oil at 1750 (he now says 1850);
(5) Graph shows maximum daily output of less than 70 bpd (world is pumping about 84 bpd);
1999 - Campbell's Speech to House of Commons
(1) Oil price shock around 2001 which will trigger a stock market crash (oil prices jumped in early 2000 followed by stock market crash);
(2) predicts hedge funds will manipulate the market (sound familiar?);
(3) Economic tension as Europe, America, Japan vie for access to ME oil, more missiles (what we had was tension over Iraq invasion, wars in Afghanistan and Iraq, Japanese troops in Iraq, EU tension with each other, some deploying troops, some not);
(4) Oil plateau around $30 pb (way off, now $50+);
March 23, 2000 Campbell wrote:
(1) OPEC will make conciliatory noise about raising quotas to maintain their illusion (sound familiar?);
(2) People finally realize no spare capacity (March 16th, 2005?, Goldman Sachs? Bank of Montreal? EIA updated monthly report of April 2005?);
(3) Upward momentum drives oil through $40 pb (past that);
(4) World, Opec, finally realize losing battle to offset depletion (not quite there yet);
(5) Opec will be 50% of world production capacity by 2009 (non opec oil is expected to be in decline by 2009 as per Peter Wells, writing an article for Oil and Gas Journal, Feb 21, 2005);
(6) calls to send in Marines (Iraq?);
(7) conventional oil peak around 2005 (he has modified this in ASPO April newsletter to 2006, however, EIA April Monthly Update expects a 700,000 bpd shortfall between estimated world oil production and estimated world demand);
(Cool All oil peak by 2010 (latest ASPO newsletter lowers this to 2007, see also Petroleum Review of Mega Projects, nothing coming online after 2007);
(9) 2008 swing share production will be gone and thereafter expect 3% decline rates (we'll see).
All in all, his calculations on oil and estimated daily production have been off, but many of his political/economic predictions have been fairly accurate.