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:
Sep. 03, 2019
Filed:
Aug. 31, 2007
Applicants:
André Vincelette, Deux-Montagnes, CA;
Paul Lefebvre, Laval, CA;
Jean-françois Nadeu, Montreal, CA;
Inventors:
Assignee:
WEATHERFORD CANADA LTD., Edmonton Alberta, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/06 (2012.01); G01D 5/353 (2006.01); G01N 21/77 (2006.01);
U.S. Cl.
CPC ...
E21B 47/065 (2013.01); G01D 5/35303 (2013.01); G01N 21/774 (2013.01); E21B 47/06 (2013.01);
Abstract
A signal processing apparatus which has an input for receiving a signal conveying a response from first and second optical components to an optical excitation. The first and second optical components are in an optical sensor which is intended to be placed in a sensing zone. The sensing zone contains hydrogen susceptible to migrate into the optical sensor. The signal processing apparatus has a processing entity for processing the response from the first and second optical components to derive information on hydrogen concentration in the optical sensor.