发明公开
- 专利标题： CONTINUOUS CIRCULATION DRILLING METHOD
- 专利标题（中）： 与连续循环钻探方法
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申请号： EP01978643.3申请日： 2001-10-30
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公开(公告)号： EP1330590A1公开(公告)日： 2003-07-30
- 发明人: AYLING, Laurence John
- 申请人： Coupler Developments Limited
- 申请人地址： Exchange House,54-58, Athol Street Douglas,Isle of Man IM1 1JD GB
- 专利权人： Coupler Developments Limited
- 当前专利权人： Coupler Developments Limited
- 当前专利权人地址： Exchange House,54-58, Athol Street Douglas,Isle of Man IM1 1JD GB
- 代理机构： Lucas, Brian Ronald
- 优先权： GB0026598 20001031
- 国际公布： WO02036928 20020510
- 主分类号： E21B19/16
- IPC分类号： E21B19/16 ; E21B21/00
摘要：
A coupler and a method for continuously circulating a drilling fluid through a drill string while adding or removing tubulars has a lower fluid pressure seal adapted to engage a drill string; lower grips adapted to engage a drill string; a valve positioned above said lower grips; upper grips adapted to engage a tubular to be added to or removed from said string; and an upper fluid pressure seal adapted to engage said tubular.
信息查询
