Method for demulsification of bitumen emulsions

Details Method for demulsification of bitumen emulsions Method for demulsification of bitumen emulsions

1981-12-02

1984-07-03

Suchfield, George A.

Wells

Processes

Separating material entering well

166303, 208188, 210708, 252344, E21B 4324, E21B 4340

Patent

active

044573715

ABSTRACT:
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polymers of specific quaternary ammonium monomers or co-polymers of these quaternary ammonium monomers wth other types of monomers wherein the greater portion of the co-polymer is comprised of the quaternary ammonium monomers. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 160.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.

REFERENCES:
patent: 2915476 (1959-12-01), Shen
patent: 2995512 (1961-08-01), Weidner et al.
patent: 3691086 (1972-09-01), Lees et al.
patent: 4127170 (1978-11-01), Redford
patent: 4154698 (1979-05-01), Doft
patent: 4160742 (1979-07-01), Raman

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