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. 17, 2020
Filed:
Aug. 28, 2017
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventors:
Eric M. Twardowski, Spring, TX (US);
Albert C. Odell, II, Kingwood, TX (US);
Tuong Thanh Le, Katy, TX (US);
Assignee:
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/14 (2006.01); E21B 34/14 (2006.01); E21B 33/10 (2006.01); E21B 7/20 (2006.01); E21B 21/10 (2006.01);
U.S. Cl.
CPC ...
E21B 33/14 (2013.01); E21B 7/208 (2013.01); E21B 21/103 (2013.01); E21B 33/10 (2013.01);
Abstract
A valve arrangement in a tubular having a first one way valve configured to prevent fluid flow in the tubular in a first direction; and a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction.