Method for demulsification of bitumen emulsions using polyalkyle

Details Method for demulsification of bitumen emulsions using polyalkyle Method for demulsification of bitumen emulsions using polyalkyle

1981-12-02

1984-03-06

Suchfield, George A.

Wells

Processes

Separating material entering well

166303, 208188, 210708, 252344, C10G 3304, E21B 4324, E21B 4340

Patent

active

044348509

ABSTRACT:
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polyamine salts prepared by contacting poly(ethyleneimines) with organic or inorganic acids. The polyamines have a molecular weight of at least 1,000. 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: Re29908 (1979-02-01), Fowler
patent: 3108059 (1963-10-01), Greenwald
patent: 3267998 (1966-08-01), Simpson
patent: 3344083 (1967-09-01), Dickson et al.
patent: 3637521 (1972-01-01), Tsuk
patent: 3855299 (1974-12-01), Witt
patent: 4308149 (1981-12-01), Selvarajan
Chemical Abstracts, vol. 53, 1959, Abstract No. 6592g, Wolf et al., "Breaking of Oil-in-Water Emulsions,".
Chemical Abstracts, vol. 73, 1970, p. 127, Abstract No. 5714c, Bazhenov et al., "Dehydration and Desalting of Petroleum,".

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