Waterflooding process employing cationic-nonionic copolymers

Details Waterflooding process employing cationic-nonionic copolymers Waterflooding process employing cationic-nonionic copolymers

C - Chemistry, Metallurgy

09

K

31/22

C09K 8/588 (2006.01)

Patent

CA 1077253

WATERFLOODING PROCESS EMPLOYING CATIONIC-NONIONIC COPOLYMERS Abstract of the Disclosure This specification discloses a waterflooding process for producing oil from an oil-containing subterranean formation penetrated by an injection well and a production well. An aqueous solution of a copolymer formed of hydrophobic olefinic segments and cationic aromatic hydrophilic segments is injected into and driven through the formation in the production of oil therefrom. -1-

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