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:
Mar. 18, 2025

Filed:

Jul. 26, 2023
Applicants:

Cnpc Usa Corp., Houston, TX (US);

Beijing Huamei, Inc., Beijing, CN;

China National Petroleum Corporation, Beijing, CN;

Inventors:

Lei Zhao, Houston, TX (US);

Jiaxiang (Jason) Ren, Houston, TX (US);

Jianpeng Yue, Houston, TX (US);

Peng Cheng, Houston, TX (US);

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); C09K 8/42 (2006.01); C09K 8/44 (2006.01);
U.S. Cl.
CPC ...
C09K 8/426 (2013.01); C09K 8/44 (2013.01); E21B 33/13 (2013.01); E21B 2200/08 (2020.05);
Abstract

The patent application discloses a plug useable for isolating sections of a wellbore. The in-situ dissolvable plug comprises a cylindrical body having a backup piece at least at one end of the cylindrical body, a tube and a cylindrical body. The tube may extend through the cylindrical body and backup piece. The cylindrical body may be made of dissolvable material comprising an external surface, and an inner bore surface formed around the tube. The cylindrical body is soft, moldable, and expandable vertical to the tube to form an in-situ plug at downhole.


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