Research Article
Macroscopic Profile Modification and Microscopic Displacement Mechanism of Weak Gel Flowing in Porous Media
Table 3
Results of weak gel profile modification and oil displacement (70°C).
| | Number | Permeability type | Permeability difference | WG injection volume (PV) | Viscosity (mPa·s) | Water absorption ratio | Injection pressure (Mpa) | Profile improvement (%) | IOR (%) | Oil recovery factor (%) | | Before gel treatment | After gel treatment |
| | 1 | High | 10.1 | 0.2 | 5123.5 | 65.1/14.3 | 3.2/23.5 | 0.2 | 97.4% | 9.0 | 82.0 | | Low | 0.1 | 0.4 | 25.5 | 57.6 |
|
|
