Injection water viscosifier for enhanced oil recovery

Details Injection water viscosifier for enhanced oil recovery Injection water viscosifier for enhanced oil recovery

C - Chemistry, Metallurgy

08

F

31/23, 402/321,

C08F 220/54 (2006.01) C09K 8/588 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1202147

ABSTRACT OF THE DISCLOSURE AN INJECTION WATER VISCOSIFIER FOR ENHANCED OIL RECOVERY High molecular weight N,N-dimethylacrylamide copolymers and terpolymers were synthesized. These poly- mers 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 insens- itive to metal salts (such as those containing polyvalent ions, such as Ca++ and Mg++).

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