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. 15, 1977
Filed:
Aug. 11, 1976
Mahendra S Patel, Edmonton, CA;
Aleksy Sacuta, Edmonton, CA;
Texaco Exploration Canada Ltd., Calgary, CA;
Abstract
A process for recovering oil from either water-bituminous petroleum emulsions or from crude petroleum emulsions having a pH of 10 or less by adding thereto an optimum amount of non-ionic, water soluble polyethylene oxide polymers at a pH of 10 or less, and separating the oil from water. To resolve bituminous petroleum emulsions, the process is carried out at between 150.degree. F and 210.degree. F and a diluent is added to reduce the petroleum viscosity. The minimum effective concentration of the polymers used decreases as their molecular weight increases. In a modification of the process, an effective amount of an alkaline earth metal halide such as calcium chloride is added to improve coagulation and separation of any clay present.