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| layer
position |
|||
|---|---|---|---|
| polymer type | experimental parameters | high permeability layer | low permeability layer |
| HPAM | displacement efficiency (%) | 62.7 | 50.8 |
| sweep efficiency (%) | 85.4 | 68.6 | |
| individual layer recovery (%) | 53.5 | 34.8 | |
| total recovery rate (%) | 45.7 | ||
| PAAD | displacement efficiency (%) | 65.6 | 61.9 |
| sweep efficiency (%) | 91.1 | 80.4 | |
| individual layer recovery (%) | 59.8 | 49.8 | |
| total recovery rate (%) | 55.8 | ||
