| CO2 Flooding 101
How does it work?
CO2 is pumped under high pressure into the reservoir through injection wells, creating a CO2 flood bank. This CO2 bank mixes with the oil remaining in the reservoir, causing it to become more mobile. The CO2 acts as both a solvent (by reducing oil viscosity) and a swelling agent. As more oil is encountered, an oil bank forms and is pushed ahead of the CO2 flood bank toward producing wells. The producing wells pump the oil to the surface where the CO2 is separated from the oil and re-injected back underground.