Table 8.
Summary of the investigation on the injection sequence of CAF flooding.
| Run No. | 1 | 2 |
|---|---|---|
| Porosity | 17.24 ± 0.21% | 17.15 ± 0.17% |
| Permeability | 408.7 ± 7.5 mD | 407.0 ± 5.6 mD |
| Chemical size in each cycle | 0.3 PV | 0.3 PV |
| Foam size in each cycle | 0.3 PV | 0.3 PV |
| Foam quality | 80% | 80% |
| Initial injection slug | Chemical | Foam |
| Cycle number | 3 | 3 |
| Initial oil saturation | 70.6 ± 0.3% | 70.1 ± 0.3% |
| Recovery after water floods | 40.5 ± 0.4% | 39.9 ± 0.3% |
| Recovery by CAF floods | 45.6 ± 0.3% | 40.5 ± 0.3% |
| Cumulative oil recovery | 86.1 ± 0.4% | 80.4 ± 0.4% |