Compositions – Leather or fur treating
Patent
1984-12-24
1985-12-17
Guynn, Herbert B.
Compositions
Leather or fur treating
166266, 208188, E21B 4322, E21B 4340
Patent
active
045591482
ABSTRACT:
The invention extracts surfactants from produced emulsions of oil, water and surfactants from enhanced oil recovery operations and concentrates the surfactants into an aqueous solution. The produced emulsion is mixed with an alkali metal chloride salt, and butanol or pentanol, and allowed to separate into two phases, an oleic phase and an aqueous phase. The oleic phase is then mixed with fresh water containing about 1% to about 10% by weight of isopropanol, ethanol or methanol, and the mixture is allowed to separate into at least two phases, a substantially water-free and surfactant-free crude oil phase and an aqueous phase containing virtually all of the enhanced oil recovery surfactants originally within the produced emulsion. The surfactants in the aqueous phase may be reutilized for further enhanced oil recovery operations.
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Ashrawi Samir S.
Prukop Gabriel
Delhommer Harold J.
Guynn Herbert B.
Park Jack H.
Priem Kenneth R.
Texaco Inc.
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