Cross-linked polyvinyl alcohol and its use in controlling...

Details Cross-linked polyvinyl alcohol and its use in controlling... Cross-linked polyvinyl alcohol and its use in controlling...

C - Chemistry, Metallurgy

08

F

31/24, 402/40

C08F 8/28 (2006.01) C08F 216/06 (2006.01) C08K 5/07 (2006.01) C09K 8/24 (2006.01) C09K 8/88 (2006.01)

Patent

CA 1303285

F-4445 Abstract CROSS LINKED POLYVINYL ALCOHOL AND ITS USE IN CONTROLLING THE PERMEABILITY OF SUBTERRANEAN FORMATIONS AND IN THE PRODUCTION OF OIL THEREFROM A novel cross-linked polymer is obtained by cross-linking polyvinyl alcohol with a cross-linking agent which is a mixture of a phenolic component and an aldehyde or a mixture of a naphtholic component and an aldehyde. The resulting polymer is exceptionally thermally stable and, therefore, can be used as an effective permeability control agent in all enhanced oil recovery operations, including steam flooding.

575943

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