发明名称 |
EXPANDABLE REAMERS FOR EARTH-BORING APPLICATIONS AND METHODS OF USING THE SAME |
摘要 |
<p>Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a retracted position and an expanded position. In some embodiments, the tools may include a formation-engaging surface comprising a gage area. In other embodiments, the tools may include a radially recessed area extending from a back edge of the formation-engaging surface. Methods for removing such expandable reamer tools from a borehole are also disclosed.</p> |
申请公布号 |
EP2097610(B1) |
申请公布日期 |
2011.06.15 |
申请号 |
EP20070853229 |
申请日期 |
2007.12.03 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
RADFORD, STEVEN R.;SHU, SCOTT S.;SHALE, LES T.;MORRIS, MARK E.;KIZZIAR, MARK R.;ZAHRADNIK, ANTON F. |
分类号 |
E21B10/32;E21B7/28;E21B17/10 |
主分类号 |
E21B10/32 |
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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