Abstract:This paper describes an experimental study of the stability of an HPAM polymer and an HPAM-ATBS terpolymer in the presence of varying initial levels of dissolved oxygen (0 to 8000 parts per billion, ppb), Fe 2+ (0 to 220 parts per million, ppm), and Fe 3+ (0 to 172 ppm). A special method was developed to attain and confirm dissolved oxygen levels. Stability studies were performed at 23°C and 90°C. For Fe 2+ concentrations between 0 and 30 ppm, viscosity losses were insignificant after one week so long as the i… Show more
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