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:
Oct. 23, 2018
Filed:
Mar. 24, 2016
Weatherford Technology Holdings, Llc, Houston, TX (US);
Michael Brian Grayson, Sugar Land, TX (US);
Julmar Shaun Sadicon Toralde, Katy, TX (US);
Joe Noske, Houston, TX (US);
Christopher L. McDowell, New Caney, TX (US);
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Abstract
An isolation valve for use with a tubular string includes a tubular housing for connection with the tubular string. A closure member is disposed in the housing and movable between an open position and a closed position. A flow tube is longitudinally movable relative to the housing for opening the closure member. A piston is coupled to the flow tube for moving the flow tube, and a fluid chamber is formed between the flow tube and the housing and receiving the piston. The isolation valve having a first fluid passage for fluid communication between a first portion of the chamber and a control line for moving the piston in a first direction, and a second fluid passage for fluid communication between a second portion of the chamber and a bore of the tubular string for moving the piston in a second direction.