发明名称 |
Top Hold Down Rod Pump with Hydraulically Activated Drain and Method of Use |
摘要 |
The present invention relates to a top hold-down pump having a barrel drain operatively connected to the pump beneath a seating nipple. The design of the pump provides specific advantages over past systems by improving the efficiency of re-setting the barrel drain and the required work over costs after the drain has been activated.
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申请公布号 |
US2009242195(A1) |
申请公布日期 |
2009.10.01 |
申请号 |
US20080098447 |
申请日期 |
2008.04.06 |
申请人 |
WICENTOVICH BLAINE MICHAEL |
发明人 |
WICENTOVICH BLAINE MICHAEL |
分类号 |
E21B43/00 |
主分类号 |
E21B43/00 |
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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