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:
May. 09, 2017
Filed:
Sep. 04, 2014
Tapantosh Chakrabarty, Calgary, CA;
Tapantosh Chakrabarty, Calgary, CA;
ExxonMobil Upstream Research Company, Spring, TX (US);
Abstract
A method of recovering heavy oil from a subterranean reservoir. The method includes injecting steam into a subterranean reservoir to heat heavy oil in the subterranean reservoir and thereby produce heavy oil of reduced viscosity; injecting a multi-purpose agent into the subterranean reservoir; and producing the heavy oil of reduced viscosity from the subterranean reservoir after injecting the steam and the multi-purpose agent. The multi-purpose agent comprises an ester of the formula RCOORwherein Ris a straight chained or branched alkyl group having 1 to 8 carbon atoms, Ris a straight chained or branched alkyl group having 1 to 12 carbon atoms, C is carbon and O is oxygen.