Research Article
Alkali Effect on Alkali-Surfactant-Polymer (ASP) Flooding Enhanced Oil Recovery Performance: Two Large-Scale Field Tests’ Evidence
Table 8
SASP perforated layer thickness and permeability distribution [
72].
| Number | Sublayer | Average perforation thickness(m) | Perforated layer thickness ratio (%) | Effective permeability(D) | Sandstone | Effective |
| 1 | SII1 | 0.03 | 0.02 | 0.3 | 0.159 | 2 | SII21 | 1 | 0.6 | 7.9 | 0.466 | 3 | SII22 | 1.2 | 0.8 | 10.7 | 0.548 | 4 | SII3 | 0.3 | 0.2 | 3.1 | 0.515 | 5 | SII4 | 1 | 0.6 | 8 | 0.499 | 6 | SII5 + 61 | 0.4 | 0.2 | 3.2 | 0.629 | 7 | SII5 + 62 | 0.2 | 0.1 | 1.2 | 0.489 | 8 | SII7 | 1.6 | 1.3 | 16.4 | 0.663 | 9 | SII81 | 2.7 | 2.2 | 28 | 0.766 | 10 | SII82 | 1.8 | 1 | 13.5 | 0.754 | 11 | SII9 | 0.8 | 0.6 | 7.7 | 0.769 |
| Sum | 10.6 | 7.7 | 100 | 0.67 |
|
|