| 发明名称 |
Shutdown system for high pressure well |
| 摘要 |
A normally open shutdown system for a high pressure gas well is disclosed which comprises a pressure-operated motor valve, a pressure sensor, and a pressure regulator, all on a conduit installed in the high pressure line leading from the gas well.
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| 申请公布号 |
US4109714(A) |
申请公布日期 |
1978.08.29 |
| 申请号 |
US19770825017 |
申请日期 |
1977.08.16 |
| 申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
GREENLEE, DONALD ROY;BURNS, MILTON WAYNE |
| 分类号 |
E21B34/16;E21B43/12;(IPC1-7):E21B43/12 |
主分类号 |
E21B34/16 |
| 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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