发明名称 |
MULTI-SHOT TUBING PERFORATOR |
摘要 |
A perforator apparatus for repeated punching of holes at a multiple of selected locations in tubing of a well bore. The apparatus is activated for repeated punching operations by a fluid control valve mechanism that control s opposed directional movement of a piston connected to a punch of the perforator apparatus.
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申请公布号 |
CA2461940(A1) |
申请公布日期 |
2003.05.01 |
申请号 |
CA20022461940 |
申请日期 |
2002.10.18 |
申请人 |
VARCO I/P, INC. |
发明人 |
MARSH, BRENT;PARKER, ROBERT;POLLOCK, TIMOTHY DAVID |
分类号 |
E21B43/112;(IPC1-7):E21B43/112 |
主分类号 |
E21B43/112 |
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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