发明授权
- 专利标题: Method for controlling direction of horizontal borehole
- 专利标题(中): 水平井眼方向控制方法
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申请号: US954520申请日: 1978-10-25
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公开(公告)号: US4184553A公开(公告)日: 1980-01-22
- 发明人: Emrys H. Jones, Jr. , Thomas R. Miller
- 申请人: Emrys H. Jones, Jr. , Thomas R. Miller
- 申请人地址: OK Ponca City
- 专利权人: Conoco, Inc.
- 当前专利权人: Conoco, Inc.
- 当前专利权人地址: OK Ponca City
- 主分类号: E21B7/04
- IPC分类号: E21B7/04 ; E21B7/06 ; E21B7/08 ; E21C15/00 ; E21C19/00
摘要:
A heavy cylinder having an axial flow passage is pumped down a rotary drill string to a position adjacent a drill bit to cause an in-seam horizontal drill to be guided in a downward direction. The cylinder can be removed with a latchable retrieval tool after the path of the borehole is sufficiently altered.
公开/授权文献
- US5215438A Fan housing 公开/授权日:1993-06-01
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