Table 3
Experimental planning to core-flooding tests.
| Feature/Step |
Test 1 |
Test 2 |
Test 3 |
|---|---|---|---|
| Kind of test | Waterflooding | SP as secondary method | SP as tertiary method |
| Core sample | 12A4 | 12A4 | 12A2 |
| Porosity (%) | 23.82 | 23.82 | 23.41 |
| Permeability (mD) | 534.52 | 534.52 | 435.32 |
| PV (cm3) | 72.58 | 72.58 | 68.58 |
| Injection rate (cm3/min) | 0.5 | 0.5 | 0.5 |
| Imbibition 1 | Brine | – | Brine |
| Drainage 1 | Oil | Oil | |
| PVinj | 7 | – | 7 |
| Fluid quantity (cm3) | 508.03 | 480.03 | |
| Waterflooding | Brine | Brine | |
| PVinj | 15 | – | 7 |
| Fluid quantity (cm3) | 1088.65 | 480.03 | |
| Drainage 2 | Oil | ||
| PVinj | – | 7 | – |
| Fluid quantity (cm3) | 508.03 | ||
| CEOR 1 | |||
| SP Injection 1 | Blend HPAM 2000 ppm + 0.5 [%wt] SDS | Blend HPAM 2000 ppm + 0.5 [%wt] SDS | |
| Viscosity at 7.3 S−1 and 50 °C (cP) | – | 10 | 10 |
| PVinj | 10 | 0.7 | |
| Fluid quantity (cm3) | 725.8 | 48.00 | |
| Drive | Brine | Brine | |
| PVinj | – | 5 | 4 |
| Fluid quantity (cm3) | 362.9 | 274.31 | |
| CEOR 2 | |||
| SP injection 2 | Blend HPAM 2000 ppm + 0.5 [%wt] SDS | ||
| Viscosity at 7.3 S−1 and 50 °C (cP) | – | – | 10 |
| PVinj | 0.5 | ||
| Fluid quantity (cm3) | 34.29 | ||
| Drive 2 | Brine | ||
| PVinj | – | – | 4 |
| Fluid quantity (cm3) | 274.31 | ||