Numerical Simulation and Optimization of Enhanced Oil Recovery by the In Situ Generated CO₂ Huff-n-Puff Process with Compound Surfactant

Table 5

The fitted results of single flash tests and saturation pressure (at a reservoir temperature of 59°C).

Index	Experiment	Simulation	Absolute error	Relative error
Gas oil ratio (m^3/m^3)	16.850	16.610	−0.240	−1.42%
Crude oil density (g/cm^3)	0.909	0.899	−0.01	1.10%
Viscosity (cp)	70.010	70.006	−0.10	−0.002%
Saturation pressure (MPa)	4.250	4.249	−0.001	−0.02%