Pore-Scale Investigation on the Plugging Behavior of Submicron-Sized Microspheres for Heterogeneous Porous Media with Higher Permeability

Table 3

Oil recovery rate by waterflooding and microsphere solution.

Core no.	Microsphere conc. (%)	Oil recovery by waterflooding (%)	Oil recovery by microsphere (%)	Incremental oil recovery rate (%)
1	0.15	44.15	55.70	11.55
2	0.05	32.41	41.00	8.59
10	0.15	53.24	64.30	12.06
14	0.05	48.33	53.50	5.17