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 |
CA2627822(C) |
申请公布日期 |
2010.11.23 |
申请号 |
CA20082627822 |
申请日期 |
2008.03.31 |
申请人 |
BLACKBUCK TECHNOLOGIES INC. |
发明人 |
WICENTOVICH, BLAINE MICHAEL |
分类号 |
E21B34/08;E21B23/01;E21B34/14 |
主分类号 |
E21B34/08 |
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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