Research Article
Compositional Modeling for Optimum Design of Water-Alternating CO2-LPG EOR under Complicated Wettability Conditions
Table 8
Maximum NPV improvements with LPG mole fraction and composition for water-wet reservoir (base case: $3,387,572).
| | | Maximum NPV improvements (%) | | | LPG 10% | LPG 15% | LPG 20% | LPG 25% | LPG 30% |
| Propane 100%
Butane 0% | 12.2 | 12.0 | 12.3 | 12.6 | 15.5 |
| Propane 63%
Butane 37% | 11.8 | 12.2 | 13.1 | 16.0 | 16.7 |
| Propane 37%
Butane 63% | 11.8 | 12.5 | 15.6 | 16.7 | 14.2 |
| Propane 0%
Butane 100% | 11.7 | 13.6 | 17.0 | 15.4 | 12.4 |
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