In order to complete the 2013 U.S. Geological Survey (USGS) assessment of carbon dioxide (CO2) storage resources , a methodology was needed to determine the CO2 storage efficiency of individual rock strata . The method that was used involved a storage efficiency approximation by MacMinn et al. , combined with a brine viscosity model by Mao and Duan , and thermal and pressure data from petroleum fields across basins . The resulting efficiencies indicated that both salinity of the pore fluid and the thermal gradient have a strong effect on the amount of CO2 that strata could store.
Brennan, S. T. (2014). The U. S. Geological survey carbon dioxide storage efficiency value methodology: Results and observations. In Energy Procedia (Vol. 63, pp. 5123–5129). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2014.11.542