The problem with getting oil out of tar sands is that with our current technology it requires lots of energy (currently providec by burning increasingly valuable and increasingly scarce natural gas) and lots of fresh water (also in increasingly short supply in Western Canada where the tar sands are located) and it creates lots of water pollution and greenhouse gasses.
It's nice to think that we can just wave the technology wand to solve all our problems, but I am somewhat less optimistic that the magic solution will appear in time for us to continue our cheap oil induced, SUV commuting, energy intensive lifestyles in perpetuity.
From a July 2004 Toronto Star article on the Tar Sands:
But the tar sands are a more complex energy proposition than a conventional field, in which oil trapped in porous rock is simply pumped to the surface.
The sands are not just a source of energy; they're also a voracious consumer of energy in the form of natural gas — and in that capacity are competing with homeowners and industrial gas users who use natural gas both for heat and as a source of chemicals for products ranging from fertilizer to plastics.
As both a source and a consumer of fossil fuels, the sands also are a big source of greenhouse gases, pushing Canada away from its goals of cutting emissions.
Ontario electricity users have a reason to keep an eye on the oil sands, too. As the province moves to shut down its coal-fired electricity generators, much of the power formerly generated by coal is likely to come from natural gas, tying the electricity sector more closely to the complex energy equation of the tar sands.http://www.energybulletin.net/1191.htmlFrom the London Free Press March 2004:
In the 2003 book, The Party's Over, Richard Heinburg also believes water is a big problem.
He observes that the wastewater pond for Syncrude is 4.5 miles in diameter and 20-feet deep.
In his book, he calculates that it would take 350 similar plants the size of Syncrude to meet the world's oil needs and together, their wastewater would be half the size of Lake Ontario.
Gallon believes that it takes so much energy to extract the sand from the bitumen that it isn't almost worth it.
He says, "If they were to do a net energy analysis, they would find that it almost takes as much energy to mine, process, refine and upgrade the bitumen oil they get from the tar sands as the energy in the light oil they are producing. There is a small net energy gain, but it is estimated that five to 10 times the greenhouse gases are released processing tar sands as released processing conventional oil."www.fyilondon.com/perl-bin/niveau2.cgi?s=shopping&p=82637.html&a=1
In considering the issues surrounding growth in demand for oil and energy it's instructive to watch this video (Real Player format) of a lecture by mathematician Al Bartlett giving what I am sure to him would be considered a kinergarten level talk on exponential growth and its effect on resource depletion.
http://edison.ncssm.edu/programs/colloquia/bartlett.ram