发明名称 |
Drilling well comprises cutting annular zone to form axial rock core which is destroyed |
摘要 |
An annular zone is drilled, forming an axial rock core which is destroyed. An Independent claim is included for a rotary drill for use in the above process.
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申请公布号 |
BE1014561(A3) |
申请公布日期 |
2003.12.02 |
申请号 |
BE20020000006 |
申请日期 |
2002.01.09 |
申请人 |
DIAMANT DRILLING SERVICE |
发明人 |
EMMANUEL DETOURNAY;ROBERT DELWICHE;SEBASTIAN DESMETTE |
分类号 |
E21B10/04;E21B10/54;E21B10/55;(IPC1-7):E21B10/04 |
主分类号 |
E21B10/04 |
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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