http://dymaxionworld.blogspot.com/2006/05/problems-without-end.html
Apparently, it takes more energy to extract oil from tar sands in Alberta than is contained in the oil that is produced, as much as 3x more. To get the oil out of the tar sands, they are using natural gas to cook it. But the energy of the oil that is produced is less than the energy of the natural gas that is used to produce it.
At a time when everybody is worried about our finite supplies of fossil fuels running out, why they are wasting energy to extract oil from the tar sands?
I guess it is economic to develop the tar sands as long as the price of energy in natural gas (in $/BTU) is cheaper than that in oil, but as natural gas supplies in N. America deplete (they are already half gone), it will eventually not be economic to produce oil from the tar sands (unless they switch to coal to cook the oil out of the sands).
I guess for the petroleum industry, it's all about the money.
Apparently, it takes more energy to extract oil from tar sands in Alberta than is contained in the oil that is produced, as much as 3x more. To get the oil out of the tar sands, they are using natural gas to cook it. But the energy of the oil that is produced is less than the energy of the natural gas that is used to produce it.
At a time when everybody is worried about our finite supplies of fossil fuels running out, why they are wasting energy to extract oil from the tar sands?
I guess it is economic to develop the tar sands as long as the price of energy in natural gas (in $/BTU) is cheaper than that in oil, but as natural gas supplies in N. America deplete (they are already half gone), it will eventually not be economic to produce oil from the tar sands (unless they switch to coal to cook the oil out of the sands).
I guess for the petroleum industry, it's all about the money.