发明名称 |
BROENNUTSTYR FOR AVLASTING AV OVERTRYKK I EN FORINGSROERPERFORATOR. |
摘要 |
<p>Hydraulic cylinder apparatus, including a ram and attached piercing element is chained and secured around a perforating gun. A hydraulic cylinder is pressurized to thereby drive the piercing element through the sidewall of the perforating gun. The piercing element is tapered so that it is self-sealing during penetration of the gun sidewall. The piercing element is allowed to retract in a controlled manner so as to control the depressurization of the perforating gun.</p> |
申请公布号 |
NO900676(D0) |
申请公布日期 |
1990.02.12 |
申请号 |
NO19900000676 |
申请日期 |
1990.02.12 |
申请人 |
DRESSER INDUSTRIES INC |
发明人 |
BARTON, JOHN ANDREW;RICLES, THOMAS DANIEL |
分类号 |
E21B43/116;(IPC1-7):E21B/ |
主分类号 |
E21B43/116 |
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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