发明名称 |
Flow control system |
摘要 |
A control valve for a passageway in which the valve is reciprocated toward and away from its seat by pressure within a pressure dome and pressure exteriorly of the valve housing and in which reciprocation is controlled by a J-slot capable of latching the valve in open position while being run and releasing the valve for reciprocation after being landed in the well together with a frangible disc which may be ruptured to permit flow past the valve member; said valve being used to control flow through a H mandrel in a pumpdown system.
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申请公布号 |
US4420044(A) |
申请公布日期 |
1983.12.13 |
申请号 |
US19820409511 |
申请日期 |
1982.08.19 |
申请人 |
OTIS ENGINEERING CORPORATION |
发明人 |
PULLIN, WILLIAM H.;LONG, OLEN R. |
分类号 |
E21B23/00;E21B23/08;E21B34/06;E21B34/10;E21B43/14 |
主分类号 |
E21B23/00 |
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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