发明名称 |
DRILL BIT WITH ECCENTRIC BODY |
摘要 |
A rotary drill bit for drilling a borehole into an earth formation is provided. The drill bit comprises a drill bit body provided with means for connecting the drill bit to a drill string, the drill bit hav-ing a longitudinal axis of rotation during drilling with the drill string and the drill bit connected thereto, and a cutting member provided with cutting means at the outer surface thereof. The cutting member is ro-tatable relative to the bit body between a first rotational position and a second rotational position, wherein the cutting means is arranged at a larger radial distance from said longitudinal axis of rotation when the cutting member is in the second rotational position than when the cut-ting member is in the first rotational position.
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申请公布号 |
CA2387568(C) |
申请公布日期 |
2008.10.14 |
申请号 |
CA20002387568 |
申请日期 |
2000.11.13 |
申请人 |
SHELL CANADA LIMITED |
发明人 |
BETTS, MICHAEL JOHN;HARRIS, TIMOTHY WILLIAM RHYS;SIMPSON, NEIL ANDREW ABERCROMBIE |
分类号 |
E21B10/26;E21B10/08;E21B10/62 |
主分类号 |
E21B10/26 |
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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