Table 1. Parameters and Results of Sandpack Displacement Tests.
| oil recovery/(%) |
|||||||
|---|---|---|---|---|---|---|---|
| test no. | porosity/(%) | permeability/(10–3 μm2) | initial oil saturation/(%) | chemical flooding system | water flooding | chemical flooding | final recovery |
| 1 | 39.8 | 1406 | 86.4 | 0.1% CDEA | 43.6 | 6.6 | 50.2 |
| 2 | 42.3 | 1370 | 82.4 | 0.1% CDEA + 0.05% SiO2 | 41.4 | 16.8 | 58.2 |