Friday, Jun 20, 2008 at 17:05
HI Kiwi Kia,
Its true that there are vast supplies of oil sands and shale oils all over the world. But it is unlikely these will will ever replace the readily accessible oils of the oil fields of the middle east.
These alternatives will only complement supply and not be in sufficient quantities to offset ultimate falling production from the OPEC countries?
The use of shale oil and oil sands to produce crude oil has a high environmental cost – eg to produce 1 barrel of oil from oil sands takes 4.5 barrels of clean
water plus enormous amounts of energy. The planet simply does not have enough clean
water to process all the oil sands and shale deposits. And then what do you do with the huge lakes of polluted
water from the extraction process?
Look what happened to the hundreds of millions of dollars invested in the Rundle Shale Oil project at
Gladstone in Queensland. Receivers can only get scrap value for it now. Greenpeace and other environmental groups were the final death knoll for Rundle (after huge costs overruns) as no refinery would take their output for fear of losing market share due to consumer boycotts etc. What I am saying is there are massive environmental costs associated with extracting oil from shale and oil sands as
well as huge energy requirements. I doubt these will ever supply anymore than a comlimentary oil supply.
Cheers,
Glen
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