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50 ft long, and pup joints space out as required.
The top section of the drilling riser system includes the
upper 163/4-in. diameter, 5,000-psi WP flex joint, drilling riser
tensioner, tensioner spool, and BOP stack. The upper flex joint is
located just below the TLP deck levels and allows larger riser
angles than could otherwise be accommodated within the TLP
deck arrangements. Bearing points on the lower structural level of
the TLP decks are required to maintain the upper portion of the
drilling riser in a vertical position.
Figure 2.32 – High pressure drilling riser assembly
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