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:
Nov. 22, 2011
Filed:
Jun. 27, 2008
Jonathan Spence, Edmonton, CA;
Teddy Kwong, Edmonton, CA;
Kamal Hammad, Fort McMurray, CA;
Samson NG, Sherwood Park, CA;
Robert Siy, Edmonton, CA;
Jason Schaan, Edmonton, CA;
Jonathan Spence, Edmonton, CA;
Teddy Kwong, Edmonton, CA;
Kamal Hammad, Fort McMurray, CA;
Samson Ng, Sherwood Park, CA;
Robert Siy, Edmonton, CA;
Jason Schaan, Edmonton, CA;
Syncrude Canada Ltd., Fort McMurray, CA;
Abstract
A process for extracting bitumen from oil sand, comprising: mixing oil sand with process water to produce an oil sand slurry containing bitumen, sand, water and entrained air; conditioning the oil sand slurry; optionally flooding the conditioned oil sand slurry with flood water to dilute the slurry, if required; introducing the slurry into a primary separation vessel wherein separate layers of primary bitumen froth, middlings and sand tailings are formed; removing a portion of the primary bitumen froth from the primary separation vessel and recycling the portion of primary bitumen froth to that step of the process upstream of the primary separation vessel to join and mix with the feed stream moving to the primary separation vessel; and thereafter retaining said feed stream in said primary separation vessel to produce primary bitumen froth.