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:
Oct. 07, 2025

Filed:

Mar. 06, 2024
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Ayrat Gizzatov, Winchester, MA (US);

Shitong Sherry Zhu, Waban, MA (US);

Amy J. Cairns, Houston, TX (US);

Rajesh Kumar Saini, Cypress, TX (US);

Mohammed Sayed, Katy, TX (US);

Wei Wang, Quincy, MA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/11 (2012.01); C09K 8/66 (2006.01); C09K 8/88 (2006.01); E21B 43/267 (2006.01);
U.S. Cl.
CPC ...
E21B 47/11 (2020.05); C09K 8/665 (2013.01); C09K 8/88 (2013.01); E21B 43/267 (2013.01);
Abstract

A method for monitoring gas production in a subterranean formation includes introducing a polymer composite particle having a degradable portion and a non-degradable portion including a tracer into a stimulation fluid and injecting the stimulation fluid into the subterranean formation to a treatment stage of a treatment zone. The treatment stage has at least one opening that the polymer composite particle may flow into and remain inside. The polymer composite particle may be exposed to moisture at a downhole temperature while inside the at least one opening. The moisture may degrade the degradable portion of the polymer composite particle, thereby releasing the non-degradable portion including the tracer. Produced gas that includes the non-degradable portion including the tracer may be recovered from the subterranean formation and the tracer may be correlated to the treatment stage of the treatment zone of the subterranean formation.


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