THERMALLY STABLE POLYMERS FOR ENHANCED OIL RECOVERY

摘要

Disclosed herein are polymer compositions useful in high temperature enhanced oil recovery applications. The polymer compositions include at least 20 mol% of an N,N-dialkyl-N,N-diallylammonium salt and further have a net negative charge. The polymer compositions provide polymer dispersions in water or brine having stable viscosity when maintained at temperatures of 100 °C and above for at least 2 days.