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:
Jun. 26, 2018
Filed:
Feb. 09, 2015
Weatherford Technology Holdings, Llc, Houston, TX (US);
Ram K. Bansal, Houston, TX (US);
Geoff George, Magnolia, TX (US);
Gerald Wes Don Buchanan, Calgary, CA;
Justin Cunningham, Houston, TX (US);
Eisenhower De Leon, Houston, TX (US);
Joe Noske, Houston, TX (US);
Lev Ring, Bellaire, TX (US);
Jerlib J. Leal, Houston, TX (US);
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Abstract
A flow sub for use with a drill string includes a tubular housing having a longitudinal bore therethrough and a flow port through a wall thereof and a ball. The ball is disposed in the housing above the flow port, has a bore therethrough, and is rotatable relative to the housing between an open position where the ball bore is aligned with the housing bore and a closed position where a wall of the ball blocks the housing bore. The flow sub further includes a seat disposed in the housing above the ball for sealing against the ball wall in the closed position and a sleeve disposed in the housing and movable between an open position where the flow port is exposed to the housing bore and a closed position where a wall of the sleeve is disposed between the flow port and the housing bore.