Table 4
Detailed experimental procedure.
Experiment | Preparation procedure | First displacing fluid | Second displacing fluid | |
---|---|---|---|---|
No. 1 | Saturating micromodel with DW | Oil injection | DW injection (80 cc/h) (blue colored) | MgSO4 brine injection (80 cc/h) |
No. 2 | Saturating micromodel with DW | Oil injection | DW injection (80 cc/h) (blue colored) | Na2CO3 brine injection (80 cc/h) |
No. 3 | Saturating micromodel with DW | Oil injection | DW injection (0.5 cc/h) | Na2CO3 brine injection (0.5 cc/h) (blue colored) |