A comparison of volumetric and dynamic CO2 storage resource and efficiency in deep saline formations

Comparison of the results indicates that dynamic CO2 storage efficiency is time-dependent. For short injection lengths (∼50 years), an open system has an efficiency similar to a closed system, and volumetric storage resource estimates are too high. For long injection time frames (∼2000 years), the dynamic storage resource of open systems approaches the volumetric potential. These results suggest that volumetric assessments are reliable provided it is understood that it may take hundreds of wells and/or injection for hundreds of years to reach a formation's effective CO2 storage resource potential. Additionally, operational factors such as water extraction can increase CO2 storage resource and efficiency.