Integration of reservoir simulation, history matching, and 4D seismic for CO2-EOR and storage at Cranfield, Mississippi, USA

The tuned model was then used to predict reservoir response and storage capacity in different field development scenarios under CO2 injection. We compared hypothetical scenarios where the operator transitions from CO2-EOR to CO2 injection without oil production (CO2-EORT) when oil production is not economical anymore, to a scenario of continuing with CO2-EOR. Our results show that CO2-EOR can store more CO2 and operations will last longer, whereas if switched to CO2-EORT, the field must be abandoned earlier because of spillover of the CO2 plume. However, the amount of CO2 stored per year is larger for CO2-EORT as compared to CO2-EOR.