N,N-Disubstituted amide cosurfactants in enhanced oil recovery p

Details N,N-Disubstituted amide cosurfactants in enhanced oil recovery p N,N-Disubstituted amide cosurfactants in enhanced oil recovery p

1982-12-10

1984-12-25

Barr, Josephine

Compositions

Leather or fur treating

252352, 252355, 252357, 166273, 166274, 166275, C09K 300

Patent

active

044902638

ABSTRACT:
A surfactant system useful for oil recovery consisting essentially of a NaCl brine, a hydrocarbon sulfonate surfactant, such as a petroleum sulfonate, and a cosurfactant such as a N,N-disubstituted amide. In another embodiment, a C.sub.1 to C.sub.8 alcohol is additionally present as a cosurfactant.

REFERENCES:
patent: 3238141 (1966-03-01), Gatza
patent: 4042030 (1977-08-01), Savins

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