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.

Date of Patent:
Sep. 06, 2022

Filed:

Oct. 13, 2020
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventor:

Mohammed M. Otaibi, Dammam, SA;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 49/08 (2006.01); E21B 21/08 (2006.01); E21B 21/10 (2006.01); E21B 33/06 (2006.01); E21B 47/12 (2012.01); G01N 27/12 (2006.01);
U.S. Cl.
CPC ...
E21B 49/0875 (2020.05); E21B 21/08 (2013.01); E21B 21/10 (2013.01); E21B 33/06 (2013.01); E21B 47/12 (2013.01); G01N 27/12 (2013.01); E21B 2200/04 (2020.05);
Abstract

A system for detection of real time gas expansion within a wellbore using an oil based mud. The system includes one or more ball valve cartridges located in a drill string, where the one or more ball valves are arranged serially along a length in the drill string. Each of the one or more ball valve cartridges include a corresponding gas detection electrode. The system also includes a control system for receiving an output signal from the gas detection electrode. Each of the one or more ball valve cartridges is configured to have a higher pressure rating than a preceding ball valve cartridge, and the gas detection electrode is configured to react with a dissolved gas in the oil based mud, causing an oxidation reaction, and thereby generating the output signal.


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