Ether-amine oxides, a process for their preparation, and...

E - Fixed Constructions – 21 – B

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E21B 43/22 (2006.01) C07C 291/04 (2006.01) C09K 8/584 (2006.01)

Patent

CA 1260252

ABSTRACT OF THE DISCLOSURE: A method for recovering oil from an oil-bearing subterranean formation which comprises injecting into the form- ation a flooding fluid containing 0.01 to 10% of an ether-amine oxide surfactant of the formula Image wherein R denotes C8-C20-alkyl, C8-C20-alkenyl or C4-C18-alkylaryl R1 and R2 are identical or different and denote C1-C4-alkyl, x denotes a number from 2 to 12, and R3 denotes a group of the formulae -C2H4- and/or -C3H6-.

499767

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