Micellar slug for oil recovery

Details Micellar slug for oil recovery Micellar slug for oil recovery

1983-03-31

1985-11-26

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 166275, E21B 4322

Patent

active

045553513

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 an internal olefin sulfonate or sulfonates having 10 to 26 carbon atoms and having the specified compositions. This micellar slug has an excellent capability for decreasing an interfacial tension between oil and micro-emulsions and between water and micro-emulsions and an excellent salinity tolerance at a wide salt concentration range. Furthermore, the micro-emulsion can be maintained stable during the sweeping in the subterranean reservoirs even when the salt concentration of the formation water is changed.

REFERENCES:
patent: 3376336 (1968-04-01), Stein et al.
patent: 3415753 (1968-12-01), Stein et al.
patent: 3506070 (1970-04-01), Jones
patent: 3508611 (1970-04-01), Davis et al.
patent: 3536136 (1970-10-01), Jones
patent: 3808156 (1974-04-01), Gorsich et al.
patent: 3867317 (1975-02-01), Woo et al.
patent: 4064076 (1977-12-01), Klisch et al.

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