Vortex induced vibration protection for deepwater drilling riser

Details Vortex induced vibration protection for deepwater drilling riser Vortex induced vibration protection for deepwater drilling riser

1997-07-19

2000-04-11

Bagnell, David

Hydraulic and earth engineering

Marine structure or fabrication thereof

Structure protection

114243, F15D 110

Patent

active

060481366

ABSTRACT:
The present invention is a method for deploying a drilling riser VIV suppression system in which a first retaining ring is installed on a syntactic foam buoyancy module encircling the drilling riser with a spring loaded connection. The spring loaded connection is capable of adjusting the diameter of the retaining ring automatically to compensate for compression of the syntactic foam under the influence of water pressure. VIV suppression provisions is then installed about the drilling riser using the first retaining ring as a load shoulder.

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F. Joseph Fischer et al, "Current-Induced Oscillations of Cognac Piles During Installation--Prediction and Measurement," International Assoc. for Hydraulic Research, International Union of Theoretical and Applied Mechanics, Practical Experiences with Flow-Induced Vibrations, Symposium Karlsruhe/Germany, Sep. 3-6, 1979, University of Karlsruhe, pp. 570-581.

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