Best Practices for Quantifying the CO2 Storage Resource Estimates in CO2 Enhanced Oil Recovery

Abstract This paper details best practices for carbon dioxide (CO 2 ) storage resource estimates in conventional hydrocarbon reservoirs associated with enhanced oil recovery (EOR) via CO 2 flooding (CO 2 EOR). The recommendations are based on U.S. Department of Energy-funded research through the Energy & Environmental Research Center using real-world applications and robust numerical simulations, which have led to a better understanding of factors that control CO 2 storage in CO 2 EOR fields. The approaches outlined in this presentation recognize that the accuracy of the CO 2 storage resource estimate for a particular reservoir is directly proportional to the state of knowledge at any given point in time. To accommodate this reality, workflows are presented that guide the user through a series of decision points that help to determine which CO 2 storage resource-estimating method is best for a particular situation.