Variable rigidity element for transfer column foot

Details Variable rigidity element for transfer column foot Variable rigidity element for transfer column foot

1988-06-17

1989-08-08

Taylor, Dennis L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

405195, 405202, 166367, E02D 574, E02D 554

Patent

active

048547816

ABSTRACT:
A variable rigidity element is provided to surround and protect a riser or transfer column installed at a water bottom and extending usually to a platform associated with production of hydrocarbons. The element is composed of a number of shells which surround the riser and two or more concentric rings of shells may be provided. The shells, preferably made of metal, are shaped to avoid contact and have an ogive end remote from the bottom installation.

REFERENCES:
patent: 2130047 (1938-09-01), Upton
patent: 3938964 (1976-02-01), Schmidt
patent: 3974012 (1976-08-01), Hogarth
patent: 4116009 (1978-09-01), Daubin
patent: 4188156 (1980-02-01), Fisher et al.
patent: 4248549 (1981-02-01), Czerewaty
patent: 4323089 (1982-04-01), Kadono et al.
patent: 4363567 (1982-12-01), Van der Graaf
patent: 4383554 (1983-05-01), Merriman
patent: 4516881 (1985-05-01), Beynet et al.

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