Research Article
Effect of CO2 Huff and Puff Rounds on Crude Oil Properties
Table 4
The effect of CO2 huff and puff rounds on enhanced oil recovery.
| | Stage | Before CO2 huff and puff | Round 1 | Round 2 | Round 3 | Round 4 | Round 5 |
| | Oil recovery factor of 1# (%) | 26.5 | 7.3 | 6.3 | 5.2 | 4.3 | 3.9 | | Oil recovery factor of 2# (%) | 27.1 | 6.8 | 6.1 | 5.6 | 4.8 | 4.2 | | Average value of oil recovery factor (%) | 26.8 | 7.1 | 6.2 | 5.4 | 4.6 | 4.1 |
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