The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 1989
Filed:
Aug. 13, 1987
Applicant:
Inventor:
Alistair S Taylor, Camberley, GB;
Assignee:
The British Petroleum Company p.l.c., London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208390 ; 208435 ;
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.