A new correlation to estimate the solubility of carbon dioxide in water for the temperature interval of geothermal interest (from 25?C to 350?C) is proposed. This equation was derived from a comprehensive statistical analysis applied to an up-dated thermodynamical database containing experimental solubility data reported in the literature. In addition, it is also presented a useful equation to quantify the propagated error generated through the use of the new polynomial correlation developed. These equations will be implemented into a new geothermal wellbore simulator (under construction) for modelling the vertical-ascendant two-phase flow in geothermal wells.

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