发明申请
- 专利标题: CIRCULATION AND ROTATION TOOL
- 专利标题(中): 循环和旋转工具
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申请号: US13085039申请日: 2011-04-12
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公开(公告)号: US20120261138A1公开(公告)日: 2012-10-18
- 发明人: Shaohua Zhou
- 申请人: Shaohua Zhou
- 申请人地址: SA Dhahran
- 专利权人: SAUDI ARABIAN OIL COMPANY
- 当前专利权人: SAUDI ARABIAN OIL COMPANY
- 当前专利权人地址: SA Dhahran
- 主分类号: E21B19/00
- IPC分类号: E21B19/00
摘要:
A tool circulates drilling fluid through and rotates a pipe string while making up or breaking out a stand of pipe. The tool includes a tubular member defining a central bore having an axis, wherein the tubular member comprises an upper tubular member and a lower tubular member, and wherein the upper tubular member and the lower tubular member are configured to alternately rotate independently and in unison. The tool also includes a central bore valve coupled to the upper member, and at least one radial valve coupled to the upper tubular member axially below the central bore valve.
公开/授权文献
- US08826992B2 Circulation and rotation tool 公开/授权日:2014-09-09
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