Insights into Enhanced Oil Recovery by Coupling Branched-Preformed Particle Gel and Viscosity Reducer Flooding in Ordinary Heavy Oil Reservoir

Table 5

The incremental oil recovery results of flooding at different flooding stages.

No.	Chemical slug	Water flooding recovery (%)	Chemical flooding recovery (%)	Incremental oil recovery (%)
4#	B-PPG	38.8	51.5	12.7
5#	S1+B-PPG	39.2	54.9	15.7
6#	S2+B-PPG	40.9	57.1	16.2
7#	S3+B-PPG	40.7	54.8	14.1