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:
Feb. 08, 1983
Filed:
Jun. 04, 1981
Applicant:
Inventor:
Robert K Ames, Seattle, WA (US);
Assignee:
Reflux Limited, Seattle, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166266 ; 166267 ; 166274 ; 166304 ;
Abstract
A method for in situ separation of bitumen from bitumen-bearing subterranean deposits includes the step of injecting a solvent composition into the deposit. The solvent composition must have an inverse critical solution temperature in a two-phase system with water and be selected from a particular group of amines that includes triethylamine and diisopropylamine. When the solvent composition contacts the bitumen in the deposit, the bitumen is dissolved by the solvent. Thereafter, the bitumen/solvent mixture is removed and separated into a bitumen component and a solvent component. The bitumen is thereafter processed to yield a usable petroleum product.