| 发明名称 |
PRESSURE SEAL FOR PUMPING INSTRUMENTS THROUGH DRILL ROD |
| 摘要 |
A device for placement between a rotary drill motor and a drill rod for use in pumping instruments down the drill rod. The device has pressure seals at each end and an opening for an instrument cable which slides through the opening as the instruments are pumped down the drill rod. |
| 申请公布号 |
ZA8005157(B) |
申请公布日期 |
1981.09.30 |
| 申请号 |
ZA19800005157 |
申请日期 |
1980.08.21 |
| 申请人 |
CONOCO INC |
发明人 |
JONES E JR;LAUER S |
| 分类号 |
E21B7/04;E21B23/08;E21B23/14;E21B33/072;E21B47/022;E21F7/00;F16L55/00 |
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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| 地址 |
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