Vapour–liquid equilibrium compositional data for a model fluid at elevated temperatures and pressures

Direct composition measurements are made on equilibrium vapour and liquid phases of a five-component model gas condensate sample. The compositions of equilibrium phases are measured at two temperatures (303.15 and 353.15 K) and pressures of 30.44–19.41 MPa. Component balance calculations and evaluation of the internal consistency of the measured equilibrium ratios of components demonstrate the reliability of measurements.