Research Article

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

Figure 2

Schematic diagram of the core flooding apparatus. () Pump, () Na2CO3 solution, () NaHCO3 solution, () acid, () compound surfactant, () pressure gauge, () thermostatic air bath, () sand pack tube, () back pressure regulator, () oil and water collector, and () gas meter.