| 发明名称 |
Device for recovering fluid from a well |
| 摘要 |
An endless chain of link members having oil accumulating cavities disposed therein is circulated in a well at a controlled rate carrying oil to the surface where same is dumped and removed by brush and wipers.
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| 申请公布号 |
US4712667(A) |
申请公布日期 |
1987.12.15 |
| 申请号 |
US19850716343 |
申请日期 |
1985.03.26 |
| 申请人 |
JACKSON, OWEN E.;DONALDSON, THOMAS W. |
发明人 |
JACKSON, OWEN E.;DONALDSON, THOMAS W. |
| 分类号 |
F04B19/14;(IPC1-7):B65G15/00 |
主分类号 |
F04B19/14 |
| 代理机构 |
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代理人 |
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| 地址 |
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