发明名称 |
ROLLER CONE DRILL BIT SHALE DIVERTER |
摘要 |
A roller cone drill bit includes a bit body adapted to be rotated about a longitudinal axis. At least one leg which terminates in a shirttail portion depends from the bit body. The shirttail portion defines a first end face having a first circumferential groove thereon. The first circumferential groove has a radius equal to the radius of a tip of the shirttail portion. A journal is cantilevered from the leg, and a roll er cone is rotatably mounted on the journal. The roller cone has a second end face adjacent to the first end face. A second circumferential groove is formed on the second end face.
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申请公布号 |
CA2317909(A1) |
申请公布日期 |
2001.03.07 |
申请号 |
CA20002317909 |
申请日期 |
2000.09.07 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
CISNEROS, DENNIS;SINGH, AMARDEEP;HUANG, SUJIAN J.;NGUYEN, QUAN V. |
分类号 |
E21B10/08;E21B10/18;E21B10/22;(IPC1-7):E21B10/08 |
主分类号 |
E21B10/08 |
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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