An Investigation of the Robustness of Physical and Numerical Vanishing Interfacial Tension Experimentation in Determining CO2 + Crude Oil Minimum Miscibility Pressure
Table 3
Deviation of the experimental VIT MMP [15, 16] and the calculated (parachor based, this study) VIT MMP at 114.4°C (238°F) for constant and variable mol ratio feed mixtures of CO2 + live crude oil system reported by Sequeira [15] and Sequeira et al. [16].
System
System type
Highest experimental pressure (MPa)
Deviation of the calculated (parachor) VIT MMP from the measured VIT MMP (%)
IFT data points in low IFT region (<1 mN/m)
89 + 11
Constant mol ratio
41.3
−1.0
70 + 30
Constant mol ratio
41.3
−8.3
88–95 mol% CO2
Variable mol ratio (constant volume ratio: 85 + 15)
34.5
+5.5
53–74 mol% CO2
Variable mol ratio (constant volume ratio: 45 + 55)