Table 3
Flooding conditions and oil recovery by XG, XG/SiO2, and XG-g-silica.
| # Core | Injected fluid | Slug conc. (g/L) | Slug conc. (lb) | Slug size (% PV) | Vp (cc) | Voi (cc) | Vwc (cc) | Vor (cc) | Saturation (% PV) |
Recovered Oil (cc) | Recovered Oil × 10−5 bbl | Oil recovery (% OOIP) | Slug efficiency × 10−4 (lb/bbl oil) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S oi | S wc | S or | |||||||||||||
| 2F | Brine | 0 | 0.00 | 0.00 | 15.34 | 10.49 | 4.85 | 4.40 | 68.40 | 31.60 | 28.70 | 6.01 | 3.78 | 57.28 | 0.00 |
| 4p | XG-polymer | 1 | 0.0022 | 55.01 | 18.18 | 11.60 | 6.58 | 4.60 | 63.80 | 36.20 | 25.30 | 7.01 | 4.41 | 60.40 | 4.99 |
| 1R | 1.5 | 0.0033 | 101.03 | 14.85 | 9.80 | 5.05 | 3.27 | 66.00 | 34.00 | 22.00 | 6.52 | 4.10 | 66.54 | 8.05 | |
| 2p | 2 | 0.0044 | 135.65 | 14.74 | 10.10 | 4.64 | 3.10 | 68.50 | 31.50 | 21.00 | 7.00 | 4.40 | 69.31 | 9.99 | |
| 1F | Physical (XG/SiO2) | 1 | 0.0022 | 62.39 | 16.03 | 10.71 | 5.32 | 2.69 | 66.80 | 33.20 | 16.80 | 8.00 | 5.03 | 74.72 | 4.37 |
| 3P | 1.5 | 0.0033 | 82.77 | 18.12 | 11.60 | 6.52 | 1.70 | 64.00 | 36.00 | 9.40 | 9.90 | 6.23 | 85.36 | 5.30 | |
| 1P | 2 | 0.0044 | 115.77 | 17.28 | 11.00 | 6.27 | 3.09 | 63.70 | 36.30 | 17.90 | 7.90 | 4.97 | 71.79 | 8.85 | |
| 5P | XG-g-silica composite | 1 | 0.0022 | 64.4 | 15.53 | 10.29 | 5.23 | 1.34 | 66.30 | 33.70 | 8.60 | 8.97 | 5.64 | 87.14 | 3.90 |
| 2R | 1.5 | 0.0033 | 104.38 | 14.37 | 9.60 | 4.77 | 1.19 | 66.80 | 33.20 | 8.30 | 8.40 | 5.28 | 87.50 | 6.25 | |
| 1KL | 2 | 0.0044 | 122.61 | 16.31 | 11.50 | 4.81 | 1.26 | 70.50 | 29.50 | 7.70 | 10.25 | 6.45 | 89.13 | 6.82 | |