Figure 11
From: A comprehensive review of viscoelastic polymer flooding in sandstone and carbonate rocks
The visualization of residual oil saturation: (a) location for 5 CT images along the core, (b) the residual oil saturation after glycerin flooding (Sorg), (c) the residual oil saturation after viscoelastic polymer flooding (Sorp), (d) the calculated residual oil saturation reduction at each location, which is comparable to a total of 5% OOIP of oil recovery from effluent samples18.
