发明授权
- 专利标题： Method and apparatus for accurate milling of windows in well casings
- 专利标题（中）： 井套内窗口精确铣削的方法和装置
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申请号： US09519445申请日： 2000-03-06
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公开(公告)号： US06318466B1公开(公告)日： 2001-11-20
- 发明人: Herve Ohmer , Mark W. Brockman , Platon Koptilov , Adrian Vuyk, Jr.
- 申请人： Herve Ohmer , Mark W. Brockman , Platon Koptilov , Adrian Vuyk, Jr.
- 主分类号： E21B2906
- IPC分类号： E21B2906
摘要：
A method and apparatus that comprises releasably securing a milling tool to a deflecting tool using a securing mechanism. The securing mechanism comprises a member that is adapted to be broken by milling action of the milling tool. In addition, in some arrangements, a protective mechanism protects abrasive inserts on a pilot mill of the milling tool.
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