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:
Dec. 25, 2012
Filed:
Aug. 05, 2008
Stephen Richard Larter, Calgary, CA;
Barry Bennett, Calgary, CA;
Lloyd Ross Snowdon, Calgary, CA;
Chunqing (Dennis) Jiang, Calgary, CA;
Jennifer Jane Adams, Houston, TX (US);
Ian Donald Gates, Calgary, CA;
Kimberley Jane Noke, Calgary, CA;
Stephen Richard Larter, Calgary, CA;
Barry Bennett, Calgary, CA;
Lloyd Ross Snowdon, Calgary, CA;
Chunqing (Dennis) Jiang, Calgary, CA;
Jennifer Jane Adams, Houston, TX (US);
Ian Donald Gates, Calgary, CA;
Kimberley Jane Noke, Calgary, CA;
Gushor Inc., Calgary, CA;
Abstract
Techniques for determining viscosity of oil in a sample include extracting the oil from the sample using a volatile polar first solvent; using a portion of the extracted oil to determine a concentration factor of oil in the sample; determining a dry weight of the extracted oil using the concentration factor; adding a second solvent to a remaining portion of the extract, where the second solvent is less volatile than the first solvent; removing the first solvent from the remaining portion of the extract; taking a series of sub-samples from the remaining portion of the extract and sequentially removing different amounts of the second solvent from each sub-sample; measuring solvent concentrations and viscosity values of the solvent-oil mixtures of each sub-sample; and based on the measured solvent concentrations and viscosity values of each sub-sample, determining the second-solvent-free viscosity of the oil in the sample.