【摘要】 通过简要分析ＨＰＡＭ氧化降解的机理和抑制其氧化降解的化学方法，联系河南油田聚合物驱实际情况，研究了溶解氧对Ｓ７２５聚合物稳定性的影响。结果表明：在６５℃、有氧情况下，无论用清水还是用污水配制Ｓ７２５时其溶液粘度都快速下降，Ｓ７２５降解严重，将几种添加剂有机地复配可以获得较好的粘度稳定效果，筛选出的三个配方经过６０天后的粘度值和粘度保留率均较高更多还原

【Abstract】 The mechanism of HPAM oxidative degradation and the chemical methods of retarding such oxidative degradation are analyzed. The effect of dissolved oxygen on the stability of S725 polymer, as related to the polymer flooding performance in Henan oilfield, is studied. Results show that the viscosity of S725 solution prepared with clean water or production water drops rapidly in the presence of oxygen at 65℃. Good viscosity stability can be gained by combination of several additives.更多还原