Denmark pursues plan to store CO2 in empty oil reservoirs

There is no such thing as empty oil reservoirs. Any reservoir that goes into decline will eventually reach a state where stimulation methods are not cost-effective anymore for the price one gets for the oil. Thats when the wells are discontinued. One such stimulation method is pumping a lot of CO2 into a reservoir. CO2 makes the oil flow better and increases the pressure which helps oil production. And now taxes pay for that.

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