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:
Mar. 16, 2021
Filed:
Mar. 29, 2019
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventor:
Joe Noske, Houston, TX (US);
Assignee:
Weatherford Technology Holdings, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01); E21B 21/10 (2006.01); E21B 34/06 (2006.01); E21B 34/10 (2006.01);
U.S. Cl.
CPC ...
E21B 21/103 (2013.01); E21B 34/06 (2013.01); E21B 34/10 (2013.01); E21B 34/102 (2013.01); E21B 34/14 (2013.01); E21B 2200/05 (2020.05);
Abstract
An isolation valve for use in a wellbore includes a housing having a bore; a flapper movable between an open position and a closed position, the flapper operable to isolate an upper portion of the bore from a lower portion of the bore when the flapper is in the closed position; and a collet pivotable between a first position configured to move the flapper to the closed position, and a second position configured to engage the flapper in the closed position, thereby retaining the flapper in the closed position.