Table 5.
Summary of the investigation on the foam quality of CAF flooding.
| Run No. | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Porosity | 17.12 ± 0.13% | 17.05 ± 0.12% | 17.24 ± 0.12% | 17.13 ± 0.10% |
| Permeability | 404.3 ± 6.4 mD | 399.7 ± 5.9 mD | 408.7 ± 6.1 mD | 401.6 ± 4.8 mD |
| Chemical size in each cycle | 0.3 PV | 0.3 PV | 0.3 PV | 0.3 PV |
| Foam size in each cycle | 0.3 PV | 0.3 PV | 0.3 PV | 0.3 PV |
| Foam quality | 40% | 60% | 80% | 95% |
| Cycle number | 3 | 3 | 3 | 3 |
| Initial oil saturation | 71.4 ± 0.1% | 70.5 ± 0.2% | 70.6 ± 0.2% | 71.0 ± 0.1% |
| Recovery after water floods | 40.2 ± 0.2% | 40.6 ± 0.2% | 40.5 ± 0.3% | 39.8 ± 0.2% |
| Recovery by CAF floods | 20.3 ± 0.3% | 37.1 ± 0.2% | 45.6 ± 0.3% | 25.2 ± 0.0.3% |
| Cumulative oil recovery | 60.5 ± 0.3% | 77.7 ± 0.2% | 86.1 ± 0.3% | 65.0 ± 0.3% |