发明申请
- 专利标题: DOWNHOLE VALVE TOOL AND METHOD OF USE
- 专利标题(中): 井下阀门工具及其使用方法
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申请号: US13264341申请日: 2010-04-12
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公开(公告)号: US20120055681A1公开(公告)日: 2012-03-08
- 发明人: George Telfer
- 申请人: George Telfer
- 申请人地址: GB Aberdeen, Aberdeenshire
- 专利权人: SPECIALISED PETROLEUM SERVICES GROUP LIMITED
- 当前专利权人: SPECIALISED PETROLEUM SERVICES GROUP LIMITED
- 当前专利权人地址: GB Aberdeen, Aberdeenshire
- 优先权: GB0906522.8 20090416
- 国际申请: PCT/EP2010/054760 WO 20100412
- 主分类号: E21B34/06
- IPC分类号: E21B34/06 ; E21B34/00
摘要:
A downhole isolation valve for testing the integrity of a tubular within a wellbore includes a tubular body (12) with an axial through bore (14) having a reduced diameter portion (29) defining a valve seat (16) and a ledge (17); an inner sleeve (18), with a closed end (22) configured to seal within the valve seat, a shoulder (28) spaced from that closed end, and a radial outlet (24) positioned between the shoulder and the closed end; wherein in use the inner sleeve is selectively moveable within the bore at a predetermined pressure between a closed position, in which there is no flowpath through the bore, and an open position, in which the closed end is positioned beyond the valve seat to expose the radial outlet to the through bore beyond the valve seat and provide a flowpath through the bore of the outer tubular body.
公开/授权文献
- US09022130B2 Downhole valve tool and method of use 公开/授权日:2015-05-05