Marine riser

Details Marine riser Marine riser

1989-01-25

1990-03-20

Neuder, William P.

Wells

Submerged well

Means removably connected to permanent well structure

166367, 175 7, 405211, E21B 712

Patent

active

049093274

ABSTRACT:
There are disclosed several embodiments of a marine riser having means for disrupting smooth flow of seawater along its length of the riser and thus damping vertical oscillation of the riser when its lower end is released from a subsea wellhead.

REFERENCES:
patent: 3248886 (1966-05-01), Blenkarn
patent: 3352118 (1967-11-01), Burkhardt
patent: 3858401 (1975-01-01), Watkins
patent: 3952526 (1976-04-01), Watkins et al.
patent: 3957112 (1976-05-01), Knibble et al.
patent: 3992889 (1976-11-01), Watkins et al.

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