Abstract:Polymer aqueous solutions are widely used in nonaqueous phase liquid recovery and aquifer remediation processes due to their high viscosity. Additional reduction of residual saturation by polymer's viscoelasticity has recently been discovered which elevates the ultimate displacement efficiency. However, there is no consensus on how, and under what conditions, viscoelasticity reduces residual saturation. This is in part because most studies utilize relatively low salinity and high viscosity, which also contribu… Show more
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