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:
Apr. 21, 2009
Filed:
Oct. 04, 2007
Michael M Toribio, Al Khobar, SA;
Akira Kamiya, Kanagawa-Ken, JP;
Stephane Vannuffelen, Hampshire, GB;
Noriyuki Matsumoto, Kanagawa-Ken, JP;
Jimmy Lawrence, Cambridge, MA (US);
Michael M Toribio, Al Khobar, SA;
Akira Kamiya, Kanagawa-Ken, JP;
Stephane Vannuffelen, Hampshire, GB;
Noriyuki Matsumoto, Kanagawa-Ken, JP;
Jimmy Lawrence, Cambridge, MA (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An electrochemical sensor for measuring contents of a fluid or gas at high pressure and/or high temperature, for use, for example, in a wellbore for hydrocarbon applications, is provided. The sensor includes: a bulkhead-like electrode assembly including a cylindrical housing and a cylindrical electrode structure. The cylindrical electrode structure includes a cylindrical conductive pin extending from a high pressure region to a low pressure region and an electrode connected to one end of the pin at the high pressure region and having an electrode surface for exposure to a flow path of the fluid or gas in the high pressure region. At least a part of the surface of the pin is protected from direct contact with the fluid or the gas by an insulating coating impermeable to the fluid or gas. The pin may include an alternating pattern of protruding and receded portions.