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:
Feb. 04, 2020

Filed:

Dec. 06, 2016
Applicant:

Schlumberger Technology Corporation, Sugar Land, TX (US);

Inventors:

Carlos Merino, Clamart, FR;

Clement Probel, Clamart, FR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/00 (2006.01); E21B 47/09 (2012.01); G01B 15/00 (2006.01); E21B 43/116 (2006.01); E21B 47/06 (2012.01); E21B 47/16 (2006.01);
U.S. Cl.
CPC ...
G01B 15/00 (2013.01); E21B 17/006 (2013.01); E21B 47/09 (2013.01); E21B 43/116 (2013.01); E21B 47/06 (2013.01); E21B 47/065 (2013.01); E21B 47/16 (2013.01);
Abstract

A system disclosed herein is for determining position of a distal end of a tubular string in a wellbore formed in a subsurface formation. The system includes casing lining the wellbore, with the casing carrying a plurality of radioactive sources. A tubular string is disposed in the wellbore and carries a radiation sensor along a length thereof. A processor is associated with the radiation sensor, and is configured to measure intensity of radiation received from the plurality of radioactive sources, and determine the position of the distal end of the tubular string by correlating a formation or wellbore fluid property that varies as a function of position within the wellbore and the measured intensity of the radiation received from the plurality of radioactive sources.


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Merino, Carlos. (2020). Distribution of radioactive tags around or along well for detection thereof (U.S. Patent No. 10551183). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10551183

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