High molecular weight N,N-dimethylacrylamide copolymers and terpolymers were synthesized. These polymers offer outstanding advantages as injection water viscosifiers in enhanced oil recovery processes including chemical, miscible, and steam or in processes requiring profile improvement through adsorption and/or gelation. They are very valuable in applications where high salinity is a problem since they are relatively insensitive to metal salts (such as those containing polyvalent ions, such as Ca++ and Mg++).
合成了高分子量的 N,N-二甲基
丙烯酰胺共聚物和三元共聚物。这些聚合物作为注
水增粘剂在提高石油采收率工艺(包括
化学、混溶和蒸汽)或需要通过吸附和/或凝胶化改善剖面的工艺中具有突出优势。这些聚合物对
金属盐(如含有 Ca++ 和 Mg++ 等多价离子的
金属盐)相对不敏感,因此在高盐度的应用中非常有价值。