Sulfonate blends useful for improved oil recovery

Details Sulfonate blends useful for improved oil recovery Sulfonate blends useful for improved oil recovery

1974-12-23

1976-12-14

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 252312, E21B 4322

Patent

active

039974510

ABSTRACT:
Improved oil recovery is realized by flooding oil-bearing subterranean formations with an aqueous mixture, preferably a micellar dispersion, comprised of at least two different petroleum sulfonates, the sulfonates have an average equivalent weight within the range of about 390-450, and have an aliphatic to aromatic proton (A/AP) ratio within the range of 4-20 moles per mole but the two sulfonates have a difference in their respective A/AP ratio of at least 2.5 moles per mole.

REFERENCES:
patent: 3288213 (1966-11-01), King et al.
patent: 3302713 (1967-02-01), Ahearn et al.
patent: 3491834 (1970-01-01), Ahearn et al.
patent: 3500912 (1970-03-01), Davis et al.
patent: 3623553 (1971-11-01), Burdge
patent: 3697424 (1972-10-01), Holm

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