Steel catenary riser
Encyclopedia
A Steel catenary riser is a common method of attaching an offshore pipeline to a deepwater floating oil production platform. The pipeline is extended into a flexible pipeline up to a catenary
Catenary
In physics and geometry, the catenary is the curve that an idealised hanging chain or cable assumes when supported at its ends and acted on only by its own weight. The curve is the graph of the hyperbolic cosine function, and has a U-like shape, superficially similar in appearance to a parabola...

on the production platform.

The risers are typically 8-12 inches in diameter and operate at a pressure of 2000-5000 psi.

They were first used by Shell on the Auger tension leg platform in 1994 which was moored in 872 m off water.
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