Steam-foaming surfactant mixtures which are tolerant of...

Details Steam-foaming surfactant mixtures which are tolerant of... Steam-foaming surfactant mixtures which are tolerant of...

E - Fixed Constructions

21

B

31/14

E21B 43/24 (2006.01) C09K 8/592 (2006.01)

Patent

CA 1259475

A B S T R A C T STEAM-FOAMING SURFACTANT MIXTURES WHICH ARE TOLERANT OF DIVALENT IONS In a steam-foam-displacement of oil within a reservoir for- mation having a significant ion-exchange capacity for releasing multivalent cations, the rate of the steam foam propagation is increased by injecting a mixture of steam and a steam-foaming surfactant mixture comprising an independently effective steam- foaming sulphonate surfactant mixed with a lesser amount of an alkyl or alkylarylpolyalkoxyalkylene sulphonate cosurfactant.

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