Staged preformed-surfactant-optimized aqueous alkaline flood

Details Staged preformed-surfactant-optimized aqueous alkaline flood Staged preformed-surfactant-optimized aqueous alkaline flood

E - Fixed Constructions

21

B

166/33

E21B 43/20 (2006.01) C09K 8/58 (2006.01)

Patent

CA 1221621

K 8955 CAN A B S T R A C T STAGED PREFORMED-SURFACIANT-OPTIMIZED AQUEOUS ALKALINE FLOOD Oil is recovered from an acidic oil reservoir by injecting an alkaline, saline, aqueous solution containing proportions of preformed cosurfactant which are decreased as increasing amounts of the solution are injected. DURH04/CS

467014

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