Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer

Figure 7

Micrographs of emulsions with different chemical agent: (a) 0.3 wt% surfactant + 2000 mg/L polymer; (b) 0.8 wt% Na₂CO₃ + 2000 mg/L polymer; (c) 0.3 wt% surfactant + 0.6 wt% Na₂CO₃ + 2000 mg/L polymer.

(a)

(b)

(c)