| 发明名称 |
DOWNHOLE FLUID PUMPING APPARATUS AND METHOD |
| 摘要 |
A downhole fluid pump including a pump chamber, and a piston disposed in the pump chamber so that the piston will move in one selected from a charge stroke and a discharge stroke when the piston is exposed to a differential pressure. The downhole fluid pump may form part of a formation evaluation while drilling tool.
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| 申请公布号 |
US2005115716(A1) |
申请公布日期 |
2005.06.02 |
| 申请号 |
US20030707246 |
申请日期 |
2003.12.01 |
| 申请人 |
CIGLENEC REINHART;KIBSGAARD PAAL;VILLAREAL STEVEN G. |
发明人 |
CIGLENEC REINHART;KIBSGAARD PAAL;VILLAREAL STEVEN G. |
| 分类号 |
E21B49/10;E21B34/10;E21B49/08;(IPC1-7):E21B34/06;E21B43/00 |
主分类号 |
E21B49/10 |
| 代理机构 |
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代理人 |
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