| 发明名称 |
TRIP PLUG FOR OPERATING A CEMENTING COLLAR IN A WELL |
| 摘要 |
<p>A trip plug for operating a stage cementing collar used in a well casing. The trip plug serves a dual functions of actuating the stage collar and closing the ports thereof following the explusion of the cement slurry into the annulus of the well bore.</p> |
| 申请公布号 |
CA1062149(A) |
申请公布日期 |
1979.09.11 |
| 申请号 |
CA19790324428 |
申请日期 |
1979.03.29 |
| 申请人 |
BJ-HUGHES, INC. |
发明人 |
SCOTT, LYLE B. |
| 分类号 |
E21B7/12;(IPC1-7):21B7/12 |
主分类号 |
E21B7/12 |
| 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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