Fig. 9

Contour plot of transition foam quality as a function of surfactant concentration and total fluid superficial velocity. (The measured transition foam quality at 0.5 wt% AOS and 3 ft/day is 0.54).

Contour plot of transition foam quality as a function of surfactant concentration and total fluid superficial velocity. (The measured transition foam quality at 0.5 wt% AOS and 3 ft/day is 0.54).