ridenrain ridenrain:
Alta_redneck Alta_redneck:
This will replace the practice of pumping millions of gallons of fresh water down wells to push up more oil. Albertans have been complaining of this for years, all this water is lost forever. Cleaning up the air, conserving fresh water and getting the Canadian tax payer to throw in a few nickels at the same time is a win win win situation.
Has this been done anywhere abd does it work? I can't imagine pumping a gas underground, expecting it to stay there and expecting oil to float on it.
Alta_redneck Alta_redneck:
I should add that the oil doesn't float, it's pressure that forces it through the rock formations or say up hill. There might be a pool right next to a well but 100 feet lower and it's not worth spending $25 or so million to get it. The way I understand how it works is they drill a small hole to it, pump the crap gas down and it pushes the oil into the pool the well is sucking out of. Just like how gas forces the syrup out of the fountain pop machine at your local 7 / 11.
Someone like Dino may want to fine tune that explanation.

Carbon dioxide is actually a 'detergent' when it comes to oil. In Saskatchewan, they used to have a large oil bearing region that was under pressure in the Weyburn and Midale oilfields. It was oil, embedded in sandstone. When the pressure let off after releasing oil for so many years, it's not economically viable to retrieve it anymore. But there are still millions of barrels of oil there.
So, they imported CO2 from a North Dakota gas processing plant, and pumped it into the rock. The CO2 adds pressure, and scrubs the oil from the rock. They pump the CO2 in one side of the field, and oil is forced out the other side.
2 birds, one stone.
http://www.er.gov.sk.ca/Default.aspx?DN ... 6008f69180