EXPERIMENTAL PHASE DENSITIES AND INTERFACIAL-TENSIONS FOR A CO2 SYNTHETIC-OIL AND A CO2/RESERVOIR-OIL SYSTEM/

Experimental data are presented for equilibrium vapor and liquid densi ties and interfacial tensions (IFT's) for two multicomponent mixtures. Data are presented at 120 and 150 degrees F for a CO2/synthetic-oil ( containing the n-paraffins, methane to tetradecane) and at 130 degrees F for a CO2/recombined-reservoir-oil system. In both systems, measure ments include the near-critical region, where IFT's become very low. T hese data should be useful in developing and testing models to predict phase behavior and IFT's for CO2 EOR operations.