thompsonx -> RE: So, when will industrial civilization collapse? (5/18/2010 7:05:28 PM)
|
quote:
ORIGINAL: Dubbelganger quote:
ORIGINAL: MichiganHeadmast We've always been a few years away from peak oil. In the 1800's it was predicted oil would run out in a decade or two, maximum. There are known reserves of shale oil that dwarf the known reserves of crude. As crude goes up in price, and as new technologies come online, it will become economical to extract oil from shale. And then of course there are those refrigerator-sized nuclear generators that are under development. I suspect the lights will stay on a bit longer. Assume a midpoint value for EROEI of 5; that is, it takes 1bbl of oil to recover 5 bbl. http://en.wikipedia.org/wiki/Shale_oil_extraction Assume approx 3 trillion bbl of technically feasible shale oil. Extraction uses 20% of that, leaving net 2.4 trillion bbl. Current world daily oil consumption is 84 million bbl. Assuming demand is static, that would give about an 82 year supply for the world. But demand is not static. Demand is estinated to grow by about 3.5% per annum; it will double to 168 million bbl per day in 20 years. That's about 1 billion bbl in only 6 days. 10 billion in 60 days. 100 billion in 600 days. 1 trillion in 6000 days, or 16.8 years. There's a formula for calculating exponential decline, but I don't have a natural log function on my little solar calculator. But it's obvious that, with a modest 3.5% annual consumption rate, that 3 trillion barrels would last much less than 82 years. Here's a well-footnoted treatise on post Peak Oil. http://www.lifeaftertheoilcrash.net/ And here's a quote about oil shale: "The average citizen . . . is led to believe that the United States really has no oil supply problem when oil shales hold "recoverable oil" equal to "more than 64 percent of the world's total proven crude oil reserves." Presumably the United States could tap into this great oil reserve at any time. This is not true at all. All attempts to get this "oil" out of shale have failed economically. Furthermore, the "oil" (and, it is not oil as is crude oil, but this is not stated) may be recoverable but the net energy recovered may not equal the energy used to recover it. If oil is "recovered" but at a net energy loss, the operation is a failure. " Do you understand, or no? Pearls before swine
|
|
|
|