| Original document(9 pages) Authorized document(10 pages) 中文版 |
An electrically and pneumatically controlled high-safety cut-off device for high-pressure oil or gas well features that its electric controller has the transducers to sample pressure, temp and valve position signals, which are sent to central control computer for issuing instructions, and its pneuamtic controller receives relative instruction to actuate a pneuamtic plate valve for automatically cutting off the wall. Its advantages are high automation level and network function, and high reliability. |
Application Number
申请号 |
03117349 |
Application Date
申请日 |
2003.02.26 |
| Title 名称 |
Electric and gas dual controlled safety cut-off device on high pressure oil and gas well top |
Publication Number
公开号 |
1431382 |
Publication Date
公开日 |
2003.07.23 |
| Approval Pub. Date |
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Granted Pub. Date |
2006.01.04 |
| International Classification 分类号 |
E21B43/12 |
Applicant(s) Name
申请人 |
Southwest Subsidiary Co, Engineering Desigh Co Ltd. of SINOPEC |
| Address 地址 |
610017 |
| Inventor(s) Name 发明人 |
Mi Litian, Li Xi |
| Attorney & Agent 代理人 |
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| More information 更 多 信 息 |
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