发明申请
- 专利标题: Device for simulataneously casing a hole while drilling
- 专利标题(中): 钻孔同时套管孔的装置
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申请号: US10522132申请日: 2003-07-17
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公开(公告)号: US20050230153A1公开(公告)日: 2005-10-20
- 发明人: Ronald Minshull , Brian Minshull
- 申请人: Ronald Minshull , Brian Minshull
- 国际申请: PCT/CA03/01033 WO 20030717
- 主分类号: E21B1/02
- IPC分类号: E21B1/02 ; E21B3/02 ; E21B4/10 ; E21B7/20
摘要:
A driving device for installing a pipe or casing, without the use of hydraulic or pneumatic means, by capturing the rotational motion of the drill string. The driving device is placed at the top end of the pipe being (42) installed and the drill string (2) passes through the center of the device. The drill string freely rotates, advances or retracts within the driving device, until the driving device is attached (4) to the drill string when required. When the driving device is attached to the drill string, the rotational force of the drill string and any downward force applied to the drill string are captured, and used to install the pipe. The driving device uses the rotation of the drill string to impact a blow to the pipe, driving the pipe downward. The driving device uses any downward force applied to the drill string to maintain downward pressure on the pipe.
公开/授权文献
- US07237625B2 Device for simulataneously casing a hole while drilling 公开/授权日:2007-07-03
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