Claxton fast-tracks high pressure riser

Claxton’s long heritage of supplying risers, combined with our large call-off inventory means we are often uniquely placed to deliver quickly... as this project, turned around in just four weeks, proves. 

The Problem
In 2009 we were called upon to provide a riser system at short notice for a water injection project offshore Norway.

The Solution
In addition to the 375ft riser, the Claxton supplied a full suite of associated tooling – including H4 connector, stress joint and tension joints. The job also used the propriety Positive Grip Tension Ring, a design pioneered by Claxton.

Unusually, the system used tension rings to provide centralization of the riser stack in addition to the more commonly used vertical tensioning configuration. In order to achieve the required horizontal force, Claxton supplied two tension joints and the top joint housed a tension ring pulled laterally with 25 tonnes of tension per pad eye.

Claxton also designed and built a work platform to provide a safer environment and process for the make up of the H4 connector.

The Result
The Claxton team managed to turn the entire project around, from enquiry to mobilization, in just four weeks – a huge challenge given that the scope of supply called on multiple products and disciplines.

Claxton holds one of the largest inventories of drilling risers and associated tooling in the whole of Europe. Click here to read more about our risers, or download our riser system brochure on the right of this page.