Oil recovery by flooding with micellar dispersions...

Details Oil recovery by flooding with micellar dispersions... Oil recovery by flooding with micellar dispersions...

C - Chemistry, Metallurgy

09

K

31/31

C09K 8/584 (2006.01)

Patent

CA 1135491

IMPROVED OIL RECOVERY BY FLOODING WITH MICELLAR DISPERSIONS CONTAINING CRUDE OIL SULFONATES ABSTRACT OF THE DISCLOSURE Improved oil recovery by flooding subterranean for- mations with micellar dispersions; comprised of hydrocarbon, water, cosurfactant, electrolyte, and petroleum sulfonate obtained by sulfonating whole or topped crude oil; is obtained by incorporating within the micellar dispersion about 1.5 to about 4.5 wt. % of active sulfonate groups (e.g. -SO3NH4 or -SO3Na) which are attached to the petroleum sulfonate. The micellar dispersions of this invention contain an amount of cosurfactant in excess of the amount required to produce a viscosity maximum with the particular micellar dispersion.

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