发明申请
- 专利标题: Flapper Operating System Without a Flow Tube
- 专利标题(中): 没有流量管的翻盖操作系统
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申请号: US11833316申请日: 2007-08-03
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公开(公告)号: US20090032238A1公开(公告)日: 2009-02-05
- 发明人: Rion R. Rogers , Steve Rosenblatt
- 申请人: Rion R. Rogers , Steve Rosenblatt
- 主分类号: E21B34/06
- IPC分类号: E21B34/06 ; E21B34/16
摘要:
A subsurface safety valve features no flow tube to operate the flapper and optionally an equalizing valve in the flapper, if used. It relies on magnetic force that is selectively created to draw the flapper to the open position. A torsion spring can close the valve when the field is removed. Optionally, the fields can be set up to pull and push the flapper open or to do either one. The optional equalizer valve can also be operated by a force field, preferably magnetic.
公开/授权文献
- US09163479B2 Flapper operating system without a flow tube 公开/授权日:2015-10-20
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