Table 5.
Displacement Stage | Remaining Oil Saturation (%) | Recovery Degree (%) | Ratio of Light/Heavy Components | ||||
---|---|---|---|---|---|---|---|
Core | Heavy Components | Light Components | Core | Heavy Components | Light Components | ||
Initial | 72.86 | 29.39 | 43.48 | - | - | - | 1.48 |
Water flooding | 59.50 | 27.04 | 32.46 | 18.35 | 3.22 | 15.13 | 1.20 |
Heavy oil activator flooding | 48.16 | 22.75 | 25.40 | 33.91 | 9.10 | 24.81 | 1.12 |
Subsequent water flooding | 44.90 | 21.92 | 22.98 | 38.37 | 10.23 | 28.14 | 1.05 |