发明名称 |
METHODS, SYSTEMS, AND TOOL ASSEMBLIES FOR DISTRIBUTING WEIGHT-ON-BIT BETWEEN A PILOT EARTH-BORING ROTARY DRILL BIT AND A REAMER DEVICE |
摘要 |
<p>Methods, systems, and tool assemblies for distributing weight between a bit and a reamer device are disclosed. For example, at least one of the drill bit and the reamer may be configured to selectively distribute a weight-on-bit between the drill bit and the reamer, such as within a predetermined range. Additionally, methods of drilling wellbores may include selectively distributing a weight-on-bit applied to a bottom hole assembly between a drill bit and a reamer of the bottom hole assembly. Also, a reamer may be configured to exhibit a first maximum rate-of-penetration into a relatively hard formation, and a drill bit may be configured to exhibit a second maximum rate-of-penetration into a relatively soft formation that is less than the first maximum rate-of-penetration.</p> |
申请公布号 |
EP2384387(A1) |
申请公布日期 |
2011.11.09 |
申请号 |
EP20100736459 |
申请日期 |
2010.01.29 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
RADFORD, STEVEN;ANDERSON, MARK;THOMPSON, WILLIAM;POWERS, JIM |
分类号 |
E21B10/46;E21B10/26;E21B10/54 |
主分类号 |
E21B10/46 |
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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