- 专利标题: LOCKING BACKPRESSURE VALVE
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申请号: US16889879申请日: 2020-06-02
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公开(公告)号: US20210372233A1公开(公告)日: 2021-12-02
- 发明人: Larry Thomas Palmer , Erik Van Steveninck , Erik Vilhelm Nordenstam , Eric Anders Erickson , Scott Bigrigg
- 申请人: Larry Thomas Palmer , Erik Van Steveninck , Erik Vilhelm Nordenstam , Eric Anders Erickson , Scott Bigrigg
- 申请人地址: US TX Spring; US TX Houston; US TX The Woodlands; US MT Bozeman; US PA Canonsburg
- 专利权人: Larry Thomas Palmer,Erik Van Steveninck,Erik Vilhelm Nordenstam,Eric Anders Erickson,Scott Bigrigg
- 当前专利权人: Larry Thomas Palmer,Erik Van Steveninck,Erik Vilhelm Nordenstam,Eric Anders Erickson,Scott Bigrigg
- 当前专利权人地址: US TX Spring; US TX Houston; US TX The Woodlands; US MT Bozeman; US PA Canonsburg
- 主分类号: E21B34/14
- IPC分类号: E21B34/14 ; E21B34/10
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve arranged in the flowbore. The backpressure valve includes a flapper valve including a first side and an opposing second side pivotally mounted to the inner surface to selectively extend across the flowbore, and a locking system mounted to the inner surface in the flowbore and selectively engageable with the flapper valve. The flapper valve is pivotable between a first position, wherein the flapper valve is free to pivot relative to the inner surface, and a second position, wherein the flapper valve is pivoted away from the flowbore and locked open by the locking system such that the first side forms part of the flowbore.
公开/授权文献
- US11359460B2 Locking backpressure valve 公开/授权日:2022-06-14