Multi-catenary type rising column

Details Multi-catenary type rising column Multi-catenary type rising column

2007-03-13

2007-03-13

Will, Thomas B. (Department: 3671)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

C405S168100, C166S367000

Reexamination Certificate

active

10514321

ABSTRACT:
An undersea pipe of the riser type providing a connection between a floating support and the sea bottom. The riser has a rigid pipe of the catenary type extending from the floating support to a point of contact with the sea bottom. The catenary riser comprises a lower pipe portion terminating at the point of contact. The apparent weight per unit length in water of the lower pipe portion being at least 25% less than that of the remainder of the pipe constituting the catenary riser.

REFERENCES:
patent: 3017934 (1962-01-01), Rhodes et al.
patent: 6146052 (2000-11-01), Jacobsen et al.
patent: 6663453 (2003-12-01), Quigley et al.
patent: 2006/0056918 (2006-03-01), Luppi
patent: 2206144 (1988-12-01), None
patent: WO 97/06341 (1997-02-01), None

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