发明名称 |
DRILL BIT HAVING SHEAR AND PICK-TYPE CUTTERS |
摘要 |
A drill bit includes a bit body defining a plurality of blades extending from a selected distance from an axis of rotation of the bit body to a gage face. A plurality of only gouging cutters is mounted on the bit body. At least one of the plurality of blades has a blade top surface longitudinally behind the tips of the gouging cutters at a selected distance from the tips of the gouging cutters. |
申请公布号 |
US2015060149(A1) |
申请公布日期 |
2015.03.05 |
申请号 |
US201314018339 |
申请日期 |
2013.09.04 |
申请人 |
Shear Bits, Ltd. |
发明人 |
Herman John James;Wilkins Dallas;Marley Ryan J. C.;Beaton Timothy P. |
分类号 |
E21B10/567;E21B10/08 |
主分类号 |
E21B10/567 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Calgary CA |