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| case no. | displacement mode | injection system | core permeability mD | recovery % | EOR % |
|---|---|---|---|---|---|
| 1 | surfactant flooding | 0.4 PV 0.3% S | 55 | 51.8 | 5.4 |
| 2 | polymer flooding | 0.4 PV 0.3% P | 46 | 56.9 | 9.7 |
| 3 | surfactant–polymer flooding | 0.4 PV 0.1% P + 0.3% S | 54 | 65.1 | 14.2 |
| 4 | surfactant–polymer flooding | 0.3 PV 0.1% P + 0.3% S | 51 | 60.4 | 11.3 |
