Recovery of heavy oil

Details Recovery of heavy oil Recovery of heavy oil

1987-08-13

1989-04-18

Sneed, H. M. S.

Mineral oils: processes and products

Tar sand treatment with liquid

208435, C10G 104

Patent

active

048224812

ABSTRACT:
Heavy crude oil is recovered from tar sand by treating the tar sand with a low concentration emulsion of a solvent in water containing 0.5 to 15% by volume of the solvent. Suitable solvents include hydrocarbons and halogenated hydrocarbons. Solvent-in-water emulsions are efficient in extracting bitumen with the major advantage of greatly reduced solvent: tar sand ratios.

REFERENCES:
patent: 4017377 (1977-04-01), Fairbanks, Jr. et al.
patent: 4057485 (1977-11-01), Blaine
patent: 4067796 (1978-01-01), Alford et al.
patent: 4342639 (1982-08-01), Gagon

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