发明名称 |
ROTATIONAL DRILL BITS AND DRILLING APPARATUSES INCLUDING THE SAME |
摘要 |
A rotary drill bit for drilling formations in dry-drilling environments is disclosed. The rotary drill bit may include a bit body rotatable about a central axis. The rotary drill bit may also include at least one cutting element coupled to the bit body. The at least one cutting element may have a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. The at least one cutting element may be oriented so that a substantial portion of the cutting edge has a positive clearance angle, which may be defined by a first vector that is normal to the cutting face and a second vector that is tangential to a helical path traveled by the cutting edge during drilling. |
申请公布号 |
WO2010104793(A2) |
申请公布日期 |
2010.09.16 |
申请号 |
WO2010US26528 |
申请日期 |
2010.03.08 |
申请人 |
DOVER BMCS ACQUISITION CORPORATION;COX, E. SEAN;MEYERS, RUSSELL, ROY |
发明人 |
COX, E. SEAN;MEYERS, RUSSELL, ROY |
分类号 |
E21B10/43;E21B10/55;E21B10/567 |
主分类号 |
E21B10/43 |
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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