by DantesPeak » Tue 12 Jun 2007, 21:17:35
$this->bbcode_second_pass_quote('shortonoil', 'Y')=20*(exp(-x-25)/10+2)+1);
the best fit for a curve from Cleveland & Kaufmans calculations of US oil’s ERoEI from 1954 to 1997 plus the generally accepted point of 100:1 for 1930. The .47% number is the slope of the straight line that best fits this equation from 2000 to 2030, extrapolated to world production, by comparison of points on its corresponding Logistics Curve.
Thanks, this is just about where I thought the US stood last year on EROEI, and I suppose the US is representative of energy use - since we use 25% of all oil consumed.
My WAG is that in 2007, EROEI is falling a little faster, but not much.
Probably it's holding up fairly well because most refineries haven't yet had to make major adjustments, and light sweet crude production while slipping, is falling slowly.
But as Gazzatrone says, after another year or two of falling EROEI, it's going to really sting.
It's already over, now it's just a matter of adjusting.