发明名称 |
Method and apparatus for accurate milling of windows in well casings |
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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申请公布号 |
US6318466(B1) |
申请公布日期 |
2001.11.20 |
申请号 |
US20000519445 |
申请日期 |
2000.03.06 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORP. |
发明人 |
OHMER HERVE;BROCKMAN MARK W.;KOPTILOV PLATON;VUYK, JR. ADRIAN |
分类号 |
E21B7/06;E21B7/08;E21B29/06;(IPC1-7):E21B29/06 |
主分类号 |
E21B7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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