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:
Jul. 26, 2022
Filed:
Jan. 08, 2021
Applicant:
Weatherford Netherlands, B.v., Den Helder, NL;
Inventor:
Marcel Budde, Vlaardingen, NL;
Assignee:
Weatherford Netherlands, B.V., Den Helder, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/08 (2006.01); E21B 33/12 (2006.01);
U.S. Cl.
CPC ...
E21B 33/08 (2013.01); E21B 33/1216 (2013.01);
Abstract
A wiper plug includes a mandrel and a seal unit disposed about the mandrel. The seal unit has a body and one or more fins extending outwardly from the body. An anti-extrusion assembly is disposed about the mandrel, and is arranged to transition between an initial configuration and an energized configuration. The anti-extrusion assembly limits extrusion of at least a portion of the seal unit.