Subsea riser and flotation means therefor

Details Subsea riser and flotation means therefor Subsea riser and flotation means therefor

1977-11-03

1979-12-04

Corbin, David H.

Hydraulic and earth engineering

Marine structure or fabrication thereof

Structure protection

9 8P, 166350, 405195, E21B 712

Patent

active

041769864

ABSTRACT:
A marine drilling riser is provided with a plurality of buoyancy cans having fail safe dump valves operative to vent compressed gas from the buoyancy cans and thereby cause rapid loss of buoyancy.

REFERENCES:
patent: 3633369 (1972-01-01), Lawrence
patent: 3992889 (1976-11-01), Watkins et al.
patent: 4037425 (1977-07-01), Berg
patent: 4040264 (1977-08-01), Neilon
patent: 4059148 (1977-11-01), Blomsma
patent: 4099560 (1978-07-01), Fischer et al.

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