Experimental investigation into the influence of polymer additives in water on the relative permeabilities of porous media

Effect of porous media properties on the onset of polymer extensional viscosity

“…Generally after primary and secondary stages of oil recovery, only 30-40% of initial oil in place will be recovered and large amount of oil will remain in reservoir. Thereby, as the third stage of field development, several techniques are proposed which Seright et al, 2009) recently some experimental results (Urbissinova et al, 2010) along with numerical studies (Afsharpoor and Balhoff, 2013;Bai et al, 2011;Xia et al, 2008) and CT image visualization (Hou et al, 2009;Meybodi et al, 2011) demonstrated that in some cases, the polymer can also mobilize the trapped oil (Bakhitov et al, 1980;Cheng et al, 2010;Sherbone et al, 1967;Wang et al, 2001b;Wu et al, 2007). Several reasons are proposed to explain this observation such as polymer adsorption Kohler, 1987, 1988), viscoelastic effect (Huifen et al, 2004;Wang et al, 2000Wang et al, , 2001aWang et al, , 2001bWu et al, 2007), shear thickening (Delshad et al, 2008;Jones, 1980) and memory effect (Hossain et al, 2009).…”

Oil displacement mechanisms of viscoelastic polymers in enhanced oil recovery (EOR): a review

“…This phenomenon has been attributed to the elasticity of the polymer solutions (Wang et al 2000). This proposition has generated controversial arguments (Bakhitov et al 1980;Schneider and Owens 1982;Pusch et al 1987;Kohler 1987, 1988).…”

Residual Oil Saturation from Polymer Floods: Laboratory Measurements and Theoretical Interpretation

“…The Tensleep core and Berea core treated with Surfasil showed decreases in residual oil saturation of 6.5% and 8.4% saturation, respectively. Bakhitov et al (1980) also measured oil relative permeabilities in the presence of an adsorbed polymer layer. Unfortunately, the type of porous medium, polyacrylamide and oil are not given.…”