The composition of the fluids at Bad Blumau (well 2) is given in Table . For the gas composition, CO2 is mentioned as being the main component. Since the composition of the remaining 3% is not stated, nitrogen is assumed and considered for the calculations. The experimental data from Table was used to describe the gas-liquid equilibria at Bad Blumau. Considering these experimental conditions, the bubble point pressure was calculated with PHREEQC and Reaktoro. Figure shows a comparison of the experimental bubble point pressures and the predicted values. The models' results are in good agreement with the experimental value, despite the uncertainty about the gas phase composition.