Effect of Emulsification on Enhanced Oil Recovery during Surfactant/Polymer Flooding in the Homogeneous and Heterogeneous Porous Media

Table 3

Oil recoveries of different displacement stage in dual-core model.

Scheme	Oil recoveries in water flood stage %			Oil recoveries in chemical flood stage, %			Incremental recoveries, %
	HPC	LPC	Total	HPC	LPC	Total	HPC	LPC	Total
0.65 PV of SP flooding	49.2	34.1	43.5	40.0	9.7	25.9	89.2	43.8	69.4
0.3 PV of emulsion followed by 0.35 PV of SP flooding	52.9	37.8	45.4	42.0	16.6	29.7	95.9	54.4	75.1

HPC: high-permeability core; LPC: low-permeability core.