发明公开
EP0286302A2 Top head drive assembly with axially movable quill
失效
Oberantriebseinrichtung mit einer轴向bewegbaren Spindel。
- 专利标题： Top head drive assembly with axially movable quill
- 专利标题（中）： Oberantriebseinrichtung mit einer轴向bewegbaren Spindel。
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申请号： EP88302817.7申请日： 1988-03-30
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公开(公告)号： EP0286302A2公开(公告)日： 1988-10-12
- 发明人: Willis, Clyde Arnold , Haney, Keith Mallory
- 申请人： W-N APACHE CORPORATION
- 申请人地址： PO Box 2490 1520 Iowa Park Road Wichita Falls Texas 76307 US
- 专利权人： W-N APACHE CORPORATION
- 当前专利权人： W-N APACHE CORPORATION
- 当前专利权人地址： PO Box 2490 1520 Iowa Park Road Wichita Falls Texas 76307 US
- 代理机构： Dodd, David Michael
- 优先权： US34483 19870402
- 主分类号： E21B3/02
- IPC分类号： E21B3/02 ; E21B19/16 ; E21B21/10
摘要：
A top head drive assembly (20) includes a tubular quill (40) having a central passageway (42) aligned with an axis (44). The quill (40) is supported for rotation on a load beam (22) included in the top head drive assembly (20) such that the quill (40) is movable along the axis (44) through a range of travel sufficient to provide thread protection to the down hole tubulars (34) during tubular handling operations. Splines (50, 104) drivingly connect the quill (40) with a transmission (30) such that the transmission (30) is operative to rotate the quill (40) throughout the range of travel of the quill (40) along the axis (44). A blowout preventer valve (110) is mounted in an upper part of the quill (40) to move axially and rotationally with the quill (40) in order to eliminate sliding or rotary seals between the blowout preventer valve (110) and the drill string (34).
公开/授权文献
- EP0286302A3 Top head drive assembly with axially movable quill 公开/授权日：1989-04-19
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