Emulsfiying agent, reverse emulsions produced using this emulsif

Details Emulsfiying agent, reverse emulsions produced using this emulsif Emulsfiying agent, reverse emulsions produced using this emulsif

1992-01-27

1993-09-07

Geist, Gary

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

526320, C09K 702

Patent

active

052428990

ABSTRACT:
An emulsifying agent according to formula (I) having a molecular weight of between 3000 and 10000: ##STR1## where A represents a terminal group for polyacrylates R.sub.1 represents an oleyl group containing up to 20 mol % stearyl groups: R.sub.2 is a residue with the formula --(CH.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.16 0).sub.y --CH.sub.3, where x is between 8 and 24 and y is between 0.75 and 2.25; l is between 1 and 3 is between 0.85 and 3.5; and n is between 0.12 and 0.5. A method of forming a reverse emulsion using this emulsifying agent. A heavy reverse emulsion, without solids comprising: 10 to 70% by volume of a dispersed brine phase having a density of between 1.20 and 2.77; 90 to 30% by volume of a continuous oil phase, and 15 to 60 g/liter of this emulsifying agent.

REFERENCES:
patent: 4228265 (1980-10-01), Ohishi et al.
patent: 4381241 (1983-04-01), Romenesko et al.
patent: 4429097 (1984-01-01), Chang et al.
patent: 4745154 (1988-05-01), Ruffner
patent: 4985507 (1991-01-01), Yoshida et al.

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