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. 23, 1993
Filed:
Dec. 26, 1991
George J Cymerman, Edmonton, CA;
Antony H Leung, Sherwood Park, CA;
Waldemar B Maciejewski, Edmonton, CA;
Alberta Energy Company, Ltd., Calgary, CA;
Canadian Occidental Petroleum Ltd., Calgary, CA;
Esso Resources Canada Limited, Calgary, CA;
Gulf Canada Resources Limited, Toronto, CA;
Her Majesty the Queen in right of the Province of Alberta, as, , US;
HBOG-Oil Sands Limited Partnership, Calgary, CA;
PanCanadian Petroleum Limited, Calgary, CA;
Petro-Canada Inc., Calgary, CA;
Abstract
As-mined, naturally water-wet oil sand is mixed at the mine site with hot water and NaOH to produce a slurry containing entrained air. The slurry is pumped through a pipeline and is fed directly to a conventional gravity separation vessel. The pipeline is of sufficient length so that, in the course of being pumped therethrough, sufficient coalescence and aeration of bitumen occurs so that, when subsequently retained in the gravity separation vessel under quiescent conditions, a viable amount of the bitumen floats, forms froth, and is recovered.