Abstract
This paper presents the results of an experimental study on the flow resistance properties of polymer solutions through Berea sand stone cores. The polymers tested in this study were co-polymers of N-Vinyl formamide and Acrylamide, respectively.
The ion type and concentration in solution were varied for each polymer in order to examine their effects on the respective flow resistance properties.
Di-valent cations in solution caused greater reduction in flow resistance properties than did the mono-valent cations. Polymers containing AMPS•Na, however, seemed to exhibit higher viscosities and resistance factors in the presence of di-valent cations than those by polymers containing AcA•Na.
The viscosity, resistance factor and residual resistance factor of N-Vinyl formamide polymers were not greatly different from those of Acrylamide polymers. The screen factors of N-Vinyl formamide polymers, however, were much greater than those of Acrylamide polymers.
