.alpha. olefin sulfonate surfactant additives for gas foam...

Details .alpha. olefin sulfonate surfactant additives for gas foam... .alpha. olefin sulfonate surfactant additives for gas foam...

E - Fixed Constructions

21

B

31/14

E21B 43/22 (2006.01) C09K 8/594 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1224915

ABSTRACT OF THE DISCLOSURE An improved non-condensible gas injection pro- cess for recovering hydrocarbons from a subterranean for- mation. The process includes the use of alpha-olefin sulfonate surfactants along with the non-condensible gas to form a gas-foam drive medium which is injected into the formation through at least one injection well to enhance the recovery of hydrocarbons from at least one production well.

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