Fig. 6

Microscopic images of shale oil after emulsifying and viscosity reduction: (a) SWFF, (b) SWFF + 0.2%PSG, (c) SWFF + 0.4%PSG, and (d) SWFF + 0.6%PSG.

Microscopic images of shale oil after emulsifying and viscosity reduction: (a) SWFF, (b) SWFF + 0.2%PSG, (c) SWFF + 0.4%PSG, and (d) SWFF + 0.6%PSG.