Compositions – Leather or fur treating
Patent
1988-06-01
1990-11-20
Stoll, Robert L.
Compositions
Leather or fur treating
252312, 252314, 166275, E21B 4322, B01F 308
Patent
active
049717073
ABSTRACT:
A method for producing a homogeneous oil-in-water microemulsion by first creating a surfactant, oil and water mixture, adding salt to the mixture in a sufficient quantity to drive the mixture into a Type III or Type II(+) phase regime, preparing a solution having a selected salinity lower than the salinity of the Type III or Type II(+) phase regime, and mixing a sufficient amount of the lower salinity solution with the Type III or Type II(+) regime to invert the Type III or Type II(+) regime into a Type II(-) oil-in-water microemulsion. The microemulsion may be used in a surfactant flood to recover hydrocarbons from underground formations.
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Nelson, R. C. & Pope, G. A., "Phase Relationships in Chemical Flooding," Soc. Petrol. Eng. Journal (Oct., 1978) pp. 325-338.
Nelson, R. C., "The Salinity Requirement Diagram-a Useful Tool in Chemical Flooding Research and Development," Soc. Petr. Eng. Paper 8824 (1980).
Delhommer Harold J.
Geist Gary L.
Park Jack H.
Priem Kenneth R.
Stoll Robert L.
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