发明名称 |
CORE DRILL AND CORING METHOD |
摘要 |
<p>Disclosed is a core drill comprising: an external pipe; a coring bit to be rotated by rotation of the external pipe to drill a coring hole and form a core having a core diameter; and an internal coring pipe (1), mounted within the external pipe, to receive a core formed by the coring bit, the internal coring pipe comprising: an internal tubular wall (2) defining a cavity (4) having a diameter substantially the same as the core diameter within which to retain a core formed by the coring bit, one or more viewing openings (8, 9, 10) being formed through the internal tubular wall; and an external tubular wall (3), in which the internal tubular wall is housed coaxially, the internal and external tubular walls being connected to each other so as to form a single-piece double-walled pipe.</p> |
申请公布号 |
WO2011011839(A1) |
申请公布日期 |
2011.02.03 |
申请号 |
WO2010BE00056 |
申请日期 |
2010.07.30 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC.;MAGEREN, OLIVIER, JEAN-MARIE, CLAUDE |
发明人 |
MAGEREN, OLIVIER, JEAN-MARIE, CLAUDE |
分类号 |
E21B25/06;E21B49/02 |
主分类号 |
E21B25/06 |
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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