发明名称 |
Hydraulic Oilfield Lift Pump |
摘要 |
A vertically orientated hydraulically driven oilfield lift pump unit having a simplified hydraulic system. The system uses a pair of single acting hydraulic cylinders in tandem with a pair of double acting hydraulic cylinders interacting with hydraulic accumulators to provide an energy efficient, robust hydraulic system design with a minimum number of components.
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申请公布号 |
US2010300679(A1) |
申请公布日期 |
2010.12.02 |
申请号 |
US20100791070 |
申请日期 |
2010.06.01 |
申请人 |
NATIONAL OILWELL VARCO. L.P. |
发明人 |
LORIMER GERRY L.;BLAQUIERE DENIS J. |
分类号 |
E21B43/00;F04B47/08 |
主分类号 |
E21B43/00 |
代理机构 |
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代理人 |
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地址 |
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