... Abstract Two new methods were developed for anaerobically sampling polymer solutions from production wells in the Sarah Maria polymer flood pilot project in Suriname. Whereas previous methods indicated severe polymer degradation, the improved methods revealed that the polymer propagated intact...

... of surfactants and react with acids in the oil to form soaps. Polymers increase the viscosity of water and control mobility ratio. The addition of an alkali to a straight polymer flood can further increase the efficiency in polymer flooding. The alkali can react with the rock and polymer to reduce polymer...

... of the displacing fluid = k´ eff,d / μ d λ displaced (oil) = mobility of the displaced fluid = k´ eff,o / μ o. The easiest parameter to alter is the viscosity of the displacing fluid, and as seen from the ratio, an increase of displacing fluid viscosity will lower the mobility ratio. Polymer flooding...

... polymer oil recovery low permeability layer chemical degradation permeability layer incremental oil recovery crossflow polymer flood concentration upstream oil & gas reservoir mechanism degradation polymer flooding high permeability layer calculation injection chemical...