Invention Grant
- Patent Title: Method and apparatus for directional drilling
- Patent Title (中): 定向钻井的方法和装置
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Application No.: US10596260Application Date: 2003-12-11
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Publication No.: US08011449B2Publication Date: 2011-09-06
- Inventor: Raymond G. Roth , Rodger Laking
- Applicant: Raymond G. Roth , Rodger Laking
- Agency: Borden Ladner Gervais LLP
- Agent Jeffrey W. Wong
- International Application: PCT/CA03/01921 WO 20031211
- International Announcement: WO2005/056971 WO 20050623
- Main IPC: E21B7/28
- IPC: E21B7/28
Abstract:
The present invention is directed at a pullhead/reamer for use in digging a hole in the ground; comprising a first end (22) shaped to receive a mandrel struts, connecting the first end to the second end, the struts defining a set of open flutes (48) therewithin; and a set of slurry jets (50); wherein when the pullhead/reamer is in use, the set of slurry jets release a pressurized liquid to mix with the ground producing a slurry which enters the pullhead/reamer via the open flutes.
Public/Granted literature
- US20070158111A1 METHOD AND APPARATUS FOR DIRECTIONAL DRILLING Public/Granted day:2007-07-12
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