Research Article
Development Performance and Pressure Field Evolution of ASP Flooding
Table 3
Formula of each slug in ASP flooding.
| Stage | Injection volume | Mass fraction (%) | Polymer | Surfactant | Alkaline |
| Preflush slug | 0.08 PV | 100 | 0 | 0 | ASP main slug | 0.3 PV | 98.5 | 0.3 | 1.2 | ASP auxiliary slug | 0.2 PV | 98.9 | 0.1 | 1 | Postprotection slug | 0.2 PV | 100 | 0 | 0 |
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