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.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
Dec. 17, 2024
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventors:
Assignee:
Weatherford Technology Holdings, LLC, Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/16 (2006.01); E21B 23/04 (2006.01); E21B 33/13 (2006.01); E21B 33/14 (2006.01); E21B 34/10 (2006.01); E21B 37/10 (2006.01);
U.S. Cl.
CPC ...
E21B 33/16 (2013.01); E21B 23/0413 (2020.05); E21B 34/10 (2013.01); E21B 37/10 (2013.01); E21B 33/13 (2013.01); E21B 33/14 (2013.01);
Abstract
A wiper plug assembly has a bypass passageway to allow pressure equalization between the wellbore below the plug and the annulus above the plug. The passageway has a unidirectional valve positioned to prevent fluid flow downhole while allowing fluid flow uphole.