Invention Grant
- Patent Title: Toe valve with vented atmospheric chamber
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Application No.: US17767106Application Date: 2020-11-09
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Publication No.: US11920432B2Publication Date: 2024-03-05
- Inventor: Alexander Craig Mackay
- Applicant: DOWNHOLE PRODUCTS LIMITED
- Applicant Address: GB Aberdeen
- Assignee: DOWNHOLE PRODUCTS LIMITED
- Current Assignee: DOWNHOLE PRODUCTS LIMITED
- Current Assignee Address: GB Aberdeen
- International Application: PCT/IB2020/060541 2020.11.09
- International Announcement: WO2021/144632A 2021.07.22
- Date entered country: 2022-04-07
- Main IPC: E21B34/10
- IPC: E21B34/10 ; E21B33/14 ; E21B34/14 ; E21B47/117

Abstract:
A toe valve for use in a wellbore includes: a tubular mandrel; a housing extending along a periphery of the mandrel; couplings for assembly as part of a casing or liner string; and a valve piston. The valve piston is: disposed in an annulus formed between the housing and the mandrel, movable between an open position and a closed position, and disposed between a valve port of the housing and a valve port of the mandrel in the closed position. The toe valve further includes: an atmospheric chamber for facilitating movement of the valve piston to the open position; a vent port formed through the housing and in fluid communication with the atmospheric chamber; and a flow control device disposed in the vent port and operable to prevent fluid flow from the wellbore into the atmospheric chamber and allow fluid flow from the atmospheric chamber into the wellbore.
Public/Granted literature
- US20220364438A1 TOE VALVE WITH VENTED ATMOSPHERIC CHAMBER Public/Granted day:2022-11-17
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