Geologic CO2 storage in deep saline formations (DSFs) has been suggested as one of the best methods for reducing CO2 emission to the atmosphere, and as such, updated storage resource estimation methods will continue to be an important component for the widespread deployment of CCS around the world. While there have been several methodologies suggested in the literature, most of these methods are based on a volumetric calculation of the pore volume of the DSF multiplied by an efficiency term and do not consider the effect of site-specific dynamic factors. These volumetric methods may be excellent for comparing storage between particular formations or basins, but they have not been validated through real-world experience or full-formation injection simulations. Several studies have also suggested that the dynamic components of geologic storage may play the most important role in storing CO2 in DSFs but until now have not directly compared CO2 storage resource estimates made with volumetric methodologies to estimates made using dynamic CO2 storage methodologies. In this study, two DSFs, in geographically separate areas with geologically diverse properties, were evaluated with both volumetric and dynamic CO2 storage resource estimation methodologies to compare the results and determine the applicability of both approaches.


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