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:
Jan. 13, 2026

Filed:

Sep. 28, 2023
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Keshabananda Baruah, Abqaiq, SA;

Hisham I. Al-Shuwaikhat, Dammam, SA;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/11 (2012.01); E21B 47/117 (2012.01);
U.S. Cl.
CPC ...
E21B 47/11 (2020.05); E21B 47/117 (2020.05);
Abstract

Described is a system for identifying a leak in a casing-casing annulus of a well. The system includes a chemical tracer spool positioned at a casing-casing annulus of a wellbore. The chemical tracer spool includes a porous layer with a polymer media and a chemical tracer molecule embedded in the porous layer. An inner surface of the porous layer defines a flow channel configured to allow fluid flow of a fluid. The chemical tracer molecule has a chemical affinity for oil, gas, or water, and is configured to diffuse into the fluid flow. A collection point is configured to collect a sample of the fluid.


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