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Figure 6.42 – Drilling riser tensioner

The drilling riser tensioner is designed to allow passage of the lower

wellhead connector and high pressure flex joints so the riser may be run through

the drilling riser tensioner. permitting a straightforward, simple running procedure.

MOORING SYSTEM

The TLP mooring system consists of the following:

Mooring templates are provided for each comer of the TLP structure. Each

template carries landing receptacles for anchor piles, tension-leg assemblies, and a

central running string. Each template is equipped with a template leveling system.

An anchor connector lower flex assembly is located at the bottom of each

tension leg. This assembly provides an automatic mechanical latch to secure each

tension leg to the mooring template. The built-in flex element allows angular

movement of each tension leg relative to the latch mechanism.

Tension leg joints are run and latched at each comer of the TLP structure and

consist of heavy tubulars with a mechanical latch at the bottom. After latching onto

the mooring template, the legs are tensioned adequately to pull the TLP down into

its final position.

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