Communications system between a station on the surface of a liqu

Details Communications system between a station on the surface of a liqu Communications system between a station on the surface of a liqu

1986-06-11

1988-07-05

Smith, Jerry

Boots, shoes, and leggings

251 26, 251 3001, 364900, G06F 304

Patent

active

047559438

ABSTRACT:
The invention relates to a system of communications between a station on the surface of a liquid medium and submerged control and monitoring means of a group of submerged well head valves remote from the station.
For each valve, the system comprises a control and monitoring module connected to an electrovalve and to sensors corresponding to said valve, transmission means connected to communications channels and to modules for simultaneously applying to said modules any control signals supplied by the station. The modules are connected to monitoring signal multiplexing means. The transmission means and multiplexing means are connected to the communications channels by switching means, which automatically select one of the channels in the case of an operating incident on the other channel.
Application to the control of submerged oil or gas well valves.

REFERENCES:
patent: 4047159 (1977-09-01), Boudry
patent: 4052703 (1977-10-01), Collins
patent: 4484325 (1984-11-01), Wilson

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