Research Article
Experimental Study on the Oil Recovery Performance of CO2 Huff-and-Puff Process in Fractured Tight Oil Reservoirs
Table 2
Conditions of CO2 huff-and-puff tests at the reservoir temperature of 61°C.
| | Test number | Long core number | Fracture length (cm) | Initial oil saturation (%) | Soaking time (h) | Pressure-drop method |
| | 1 | A | 5.014 | 63.25 | 12 | Rapid | | 2 | B | 10.790 | 65.77 | 12 | Rapid | | 3 | A | 5.014 | 65.93 | 24 | Rapid | | 4 | B | 10.790 | 66.07 | 12 | Slow | | 5 | B | 10.790 | 66.29 | 12 | Step |
|
|
