Micellar slug for oil recovery

Details Micellar slug for oil recovery Micellar slug for oil recovery

E - Fixed Constructions

21

B

31/13, 166/31

E21B 43/22 (2006.01) C09K 8/584 (2006.01) E21B 43/20 (2006.01)

Patent

CA 1217928

MICELLAR SLUG FOR OIL RECOVERY ABSTRACT OF THE DISCLOSURE A micellar slug for use in the recovery of oil, the slug containing a hydrocarbon, an aqueous medium, a surfactant, and a cosurfactant. The surfactant contains as an essential component (a) an internal olefin sulfonate or sulfonates having 10 to 30 carbon atoms and (b) an alpha-olefin sulfonate or sulfonates having 10 to 30 carbon atoms. This micellar slug has a sufficiently low interfacial tension, good salinity tolerance, hard-water resistance, ability to maintain the micro-emulsion against change in the composition of the micro-emulsion, and mobility controlled viscosity.

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