Invention Grant
- Patent Title: Liner flotation system
- Patent Title (中): 衬管浮选系统
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Application No.: US13536078Application Date: 2012-06-28
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Publication No.: US09279295B2Publication Date: 2016-03-08
- Inventor: Scott Earl Williamson , Robert Christopher Stratton
- Applicant: Scott Earl Williamson , Robert Christopher Stratton
- Applicant Address: US TX Houston
- Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
- Current Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, L.L.P.
- Main IPC: E21B43/10
- IPC: E21B43/10 ; E21B17/14 ; E21B21/10

Abstract:
A liner flotation system comprises a liner, a first valve, and a second valve configured to form a gas filled chamber within the liner. The first valve is operable to allow fluid flow into the chamber, and the second valve operable to allow fluid flow out of the chamber. A sleeve is disposed in the chamber, and the first valve is movable into engagement with the sleeve to provide an indication of a position of the first valve. A method of securing a liner in a well comprises lowering a liner having a gas filled chamber in the well, actuating a valve to open fluid flow into the chamber, removing the gas from the chamber, and moving the valve into engagement with a sleeve coupled to the liner to provide an indication of a position of the valve.
Public/Granted literature
- US20140000906A1 LINER FLOTATION SYSTEM Public/Granted day:2014-01-02
Information query
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