Process for displacing fluid in a subterranean formation by...

Details Process for displacing fluid in a subterranean formation by... Process for displacing fluid in a subterranean formation by...

E - Fixed Constructions

21

B

31/21

E21B 43/20 (2006.01) C08F 8/04 (2006.01) C08F 8/36 (2006.01) C09K 8/24 (2006.01) C09K 8/588 (2006.01) E21B 43/22 (2006.01)

Patent

CA 1073653

A B S T R A C T The aqueous solution that is injected in-to a subterranean reservoir to displace oil through the reservoir is thickened with a substantially water-soluble block copolymer containing both water-soluble and water-insoluble polymer blocks. The composition and concentration of the copolymer are correlated with the temperature and injectivity of the reservoir to provide a thickened solution of selected mobility and stability within the reservoir.

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