发明授权
- 专利标题: Downhole tool
- 专利标题(中): 井下工具
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申请号: US13002160申请日: 2009-07-16
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公开(公告)号: US08689877B2公开(公告)日: 2014-04-08
- 发明人: George Telfer , James Linklater , James Atkins
- 申请人: George Telfer , James Linklater , James Atkins
- 申请人地址: GB Aberdeen
- 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
- 代理机构: Osha Liang LLP
- 优先权: GB0812955.3 20080716
- 国际申请: PCT/GB2009/050865 WO 20090716
- 国际公布: WO2010/007434 WO 20100121
- 主分类号: E21B37/00
- IPC分类号: E21B37/00
摘要:
A cleaning tool (1) for use in cleaning ferrous material from a wellbore has a magnetic cleaning element (14) mounted to a tool body (2) within a slot (5) using a releasable concealed interference fit fastener assembly (15) comprising a fastener member having a head (16), and a shank (17) with a configured end (18) and a deformable fastener ring (20) adapted to fit closely over the shank, and a press-fit collar (21) adapted to deform the deformable fastener ring upon the configured end of the shank when assembled, and wherein the respective head and collar are each flanged to permit an interference fit with a corresponding contact surface of the tool body around said slot.
公开/授权文献
- US20110168404A1 DOWNHOLE TOOL 公开/授权日:2011-07-14