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:
Jul. 20, 2010
Filed:
May. 28, 2003
LI Jiang, Ridgefield, CT (US);
Timothy Gareth John Jones, Cottenham, GB;
Jonathan Webster Brown, Sugar Land, TX (US);
Andrew Gilbert, Aberdeen, GB;
Li Jiang, Ridgefield, CT (US);
Timothy Gareth John Jones, Cottenham, GB;
Jonathan Webster Brown, Sugar Land, TX (US);
Andrew Gilbert, Aberdeen, GB;
Schlumberger Technology Corporation, Ridgefield, CT (US);
Abstract
An electrochemical sensor for measuring the amount of hydrogen sulphide or thiols in a fluid in a wellbore comprises a temperature- and pressure-resistant housing containing a flow path for the fluids. The fluids flow over one side of a gas permeable membrane made of zeolite or a suitable ceramic material, the other side of the membrane being exposed to a chamber containing a reaction solution which together with the hydrogen sulphide or thiols create a redox reaction resulting in an electrical current dependent upon the amount of hydrogen sulphide or thiols in the fluid.