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. 01, 2020
Filed:
Nov. 08, 2017
Applicant:
Openfield SA, Versailles, FR;
Inventors:
Eric Donzier, Berchères sur Vesgre, FR;
Linda Abbassi, Montigny le Bretonneux, FR;
Emmanuel Tavernier, Paris, FR;
Assignee:
OPENFIELD SA, Versailles, FR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01V 8/12 (2006.01); G01N 21/85 (2006.01); E21B 47/01 (2012.01); E21B 47/113 (2012.01); E21B 49/08 (2006.01); G01N 21/27 (2006.01); G01N 33/28 (2006.01);
U.S. Cl.
CPC ...
G01V 8/12 (2013.01); E21B 47/01 (2013.01); E21B 47/113 (2020.05); E21B 49/08 (2013.01); G01N 21/27 (2013.01); G01N 21/8507 (2013.01); G01N 33/2823 (2013.01); E21B 49/0875 (2020.05);
Abstract
A downhole optical chemical compound monitoring device () arranged to be integrated in a mandrel () of a drilling system, for monitoring a chemical compound in a drilling fluid (B) circulated through a well (), the downhole optical chemical compound monitoring device () comprising: