Method for transmission of pressure signals through a conduit

Details Method for transmission of pressure signals through a conduit Method for transmission of pressure signals through a conduit

1980-07-24

1982-01-05

Cohan, Alan

Fluid handling

Processes

Involving pressure control

13762411, 13762418, 91471, 166 72, F16K 3112

Patent

active

043088848

ABSTRACT:
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.

REFERENCES:
patent: 3856037 (1974-12-01), Garrett et al.
patent: 3993100 (1976-11-01), Pollard et al.
patent: 4062379 (1977-12-01), Clinton
patent: 4119146 (1978-10-01), Taylor
patent: 4185541 (1980-01-01), Milberger et al.

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