Table 3. Effect of Oil Viscosity on Parameters of Foamy Oil.
| viscosity (mPa·s) | bubble point pressure (MPa) | pseudo-bubble point pressure (MPa) | pressure range of the foamy oil flow stage (MPa) | recovery proportion of the foamy oil flow stage (%) |
|---|---|---|---|---|
| 200 | 5.07 | 5.07 | 0 | 0 |
| 620 | 4.97 | 3.59 | 1.38 | 31.93 |
| 2440 | 4.7 | 2.7 | 2 | 71.50 |
| 8620 | 4.41 | 2.45 | 1.96 | 72.97 |
| 28,040 | 4.2 | 2.07 | 2.13 | 81.33 |