Micellar slug for oil recovery

Details Micellar slug for oil recovery Micellar slug for oil recovery

1983-07-18

1985-10-29

Lieberman, Paul

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 855D, 252555, E21B 4316

Patent

active

045496072

ABSTRACT:
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.

REFERENCES:
patent: 3477511 (1969-11-01), Jones et al.
patent: 4393937 (1983-07-01), Dilgren et al.

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