Table 1.
Comparison of core flood experiments.
| Core Flooding | Xanthan Gum | Xanthan Acrylate |
|---|---|---|
| Polymer concentration (ppm) | 1500 | 1500 |
| Core length (inches) | 6.04 | 5.94 |
| Porosity | 19.58 | 19.78 |
| Permeability (md) | 102.66 | 107.30 |
| Swi% | 39.88 | 40.61 |
| Pore volume (cc) | 34.00 | 33.83 |
| Initial oil saturation% | 60.22 | 59.49 |
| No. of pore volumes injected | 3 | 3 |
| Initial oil volume (cc) | 20.5 | 20.25 |
| Residual oil after water flooding (cc) | 11.3 | 11.37 |
| Recovery% of IOIP after water flooding | 44.88 | 43.85 |
| Recovery% of IOIP after chemical flooding * | 13.93 | 19.21 |
| Recovery% of ROS by chemical flooding | 25.27 | 35.18 |
* Chemical flooding means flooding with the xanthan gum and xanthan acrylate solutions.