Bryan J Sims

US Patent:

20180058177, Mar 1, 2018

Filed:

Aug 23, 2016

Appl. No.:

15/244131

Inventors:

- Houston TX, US
Bryan J. Sims - Flemington WV, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 34/10
E21B 34/12

Abstract:

A tubular isolation system is operably connected with a movable member that selectively enables or disables the isolation system at least one time. In an embodiment the movable member is actuated by flow or pressure against a spring bias with an indexing system to regulate movable member movement so that that two opposed positions are attainable. The movable member can be a sleeve with a flow passage therethrough. One way to shift the sleeve is to land a ball on a seat on top of the sleeve and apply a cycle of pressure against the bias so that a j-slot moves the sleeve between end positions. The safety device is dual flappers in one embodiment. The sleeve can also be moved with circulation flow through the tubing with returns coming up the annulus. Alternatively a restriction can be used that later disappears for production.