CO2 solubility in formation water under sequestration conditions

The average absolute deviation (%AAD) of all the measured solubilities in the mixed salts aqueous solution in comparison with predictions of the sCPA-EoS and Duan model were found to be 6.88% and 4.04%, respectively. A similar comparison was also performed for the measured CO2 solubilities in deionised water. The average absolute deviation between experimental results and predictions of the sCPA-EoS and Duan model were calculated to be 7.74% and 4.19%, respectively. The percentage average expanded uncertainty (with 95% level of confidence, k = 2) for measurements conducted in deionised water and mixed salt aqueous solution were found to be 1.20% and 1.57%, respectively.