发明名称 |
Method for transmission of pressure signals through a conduit |
摘要 |
An improved method for transmitting fluid pressure signals through a conduit is disclosed wherein time delay is minimized. In the practice of this invention, a pressure pulse is applied to a conduit for a predetermined time interval and thereafter reduced to a maintenance level. The invention is particularly useful in sequentially controlling subsea oil well valves from a remote surface station.
|
申请公布号 |
US4308884(A) |
申请公布日期 |
1982.01.05 |
申请号 |
US19800171686 |
申请日期 |
1980.07.24 |
申请人 |
EXXON PRODUCTION RESEARCH COMPANY |
发明人 |
HOERGER, CARL R.;SMITH, BRIAN W. |
分类号 |
F16K31/12;E21B33/035;(IPC1-7):F16K31/12 |
主分类号 |
F16K31/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|