oa Enhanced Oil Recovery and CO2 Storage by Carbonated Water Injection

Concerns over the environmental impact of CO2 have led to a resurgence of interest in CO2 injection in oil reservoirs.<br>The injection of CO2 can enhance oil recovery from these reservoirs and at the same time help mitigating the problem<br>of increased CO2 concentrations in the atmosphere by storing large quantities of CO2 for a long period of time.<br>Displacement and recovery of oil by CO2 injection has been studied and applied in the field extensively. The main<br>advantage of CO2 is that at most reservoir conditions it is a supercritical fluid with high solvency power to extract<br>hydrocarbon components and displace oil miscibly.