Process for enhanced oil recovery employing synthetic sulfonates

Details Process for enhanced oil recovery employing synthetic sulfonates Process for enhanced oil recovery employing synthetic sulfonates

1983-12-27

1985-07-23

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, E21B 4316

Patent

active

045304009

ABSTRACT:
Enhanced oil recovery from a subterranean petroleum reservoir is realized by successively flooding oil-bearing subterranean formations with (1) a micellar displacement fluid comprising (A) a hydrocarbon, (B) optionally a cosurfactant, (C) brine, and (D) a synthetic sulfonate or a synthetic sulfonate in combination with one or more different petroleum sulfonates, (2) a mobility buffer, and (3) an aqueous drive fluid; the oil is recovered from one or more production wells spaced apart from the injection well in the reservoir.

REFERENCES:
patent: 3861466 (1975-01-01), Gale
patent: 3933201 (1976-01-01), Kerfoot et al.
patent: 4058467 (1977-11-01), Sias
patent: 4446036 (1984-05-01), Hseih et al.

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