| 发明名称 |
REDUCTION OF THE FRICTIONAL COEFFICIENT IN A BOREHOLE BY THE USE OF VIBRATION |
| 摘要 |
<p>F-0734 A deviated borehole is drilled with a rotary drilling technique in which the drill string is vibrated at a suitable frequency and amplitude to reduce the friction of the drill string against the lower side of the borehole and to promote the free movement of the drill string therein.</p> |
| 申请公布号 |
CA1167832(A) |
申请公布日期 |
1984.05.22 |
| 申请号 |
CA19810388700 |
申请日期 |
1981.10.26 |
| 申请人 |
MOBIL OIL CORPORATION |
发明人 |
ROPER, WILBUR F.;DELLINGER, THOMAS B. |
| 分类号 |
E21B7/04;E21B7/24;(IPC1-7):E21B7/06;E21B7/08 |
主分类号 |
E21B7/04 |
| 代理机构 |
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代理人 |
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| 主权项 |
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