Research Article

Main Controlling Factor of Polymer-Surfactant Flooding to Improve Recovery in Heterogeneous Reservoir

Figure 5

Micrographs of emulsions with different chemical agent: (a) 0.1 wt% surfactant + 2000 mg/L polymer; (b) 0.2 wt% surfactant + 2000 mg/L polymer; (c) 0.3 wt% surfactant + 2000 mg/L polymer.
(a)
(b)
(c)