发明公开
- 专利标题: DRILLING APPARATUS
- 专利标题(中): 钻探设备
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申请号: EP97926112.0申请日: 1997-06-13
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公开(公告)号: EP0904478A1公开(公告)日: 1999-03-31
- 发明人: EDDISON, Alan, Martyn
- 申请人: ANDERGAUGE LIMITED
- 申请人地址: Badentoy Industrial Park, Badentoy Avenue Aberdeen AB1 4YB GB
- 专利权人: ANDERGAUGE LIMITED
- 当前专利权人: ANDERGAUGE LIMITED
- 当前专利权人地址: Badentoy Industrial Park, Badentoy Avenue Aberdeen AB1 4YB GB
- 代理机构: Shanks, Andrew, et al
- 优先权: GB19960012524 19960614
- 国际公布: WO1997047848 19971218
- 主分类号: E21B7
- IPC分类号: E21B7 ; E21B17
摘要:
Directional drilling apparatus (26) for location on a drill string (20) comprises a stabiliser (32) having a mandrel (38) for connection to the drill string (20) and an eccentric non-rotating element (46) mounted on the mandrel (38) for offsetting the string (20) in the bore (22) and a non-rotating offset mass (34) for maintaining the element (46) at a selected orientation relative to the bore (22) as the drill string (20) rotates.
公开/授权文献
- EP0904478B1 DRILLING APPARATUS 公开/授权日:2000-08-23
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