Steam-foaming surfactant mixtures which are tolerant of divalent

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

1985-03-18

1987-02-17

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166272, 166309, E21B 4324

Patent

active

046432566

ABSTRACT:
In a steam-foam-displacement of oil within a reservoir formation 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 sulfonate surfactant mixed with a lesser amount of an alkyl or alkylarylpolyalkoxyalkylene sulfonate cosurfactant.

REFERENCES:
patent: 4175618 (1979-11-01), Wu et al.
patent: 4393937 (1983-07-01), Dilgren et al.
patent: 4532993 (1985-08-01), Dilgren et al.

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