Saipem Limited

Amedeo Marcotulli

A riser termination connecting a steel riser duct to an I-tube or J-tube connecting interface of a floating unit has an upper hang off portion, lower coupling adapter, steel termination conduit having an upper conduit end rigidly connected to the upper hang off portion, and lower conduit end connected to an adjacent conduit section of the riser duct. The termination conduit extends axially slidable through the coupling adapter. A cylindrical bearing seat inside the coupling adapter defines a bearing seat diameter and axis. An annular rounded bearing body has a bearing body diameter and protrudes outward from the termination conduit inside the bearing seat, the bearing body diameter being smaller than the bearing seat diameter to provide a unilateral gap and allow relative axial sliding and rotation. The termination conduit includes a variable cross-section portion having an external diameter and wall thickness tapering from the bearing body.

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Milan, Italy

Amedeo Marcotulli