Fast track high pressure riser delivery keeps drilling on-track

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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 high pressure riser project, turned around in just four weeks, proves.

The Problem

In 2009 we were called upon to provide a high pressure riser system at short notice for a water injection project offshore Norway. The client had an extremely compressed schedule and Claxton’s riser team mobilised quickly to ensure the operator could keep their plan on-track.

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 within the riser stack  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.

High pressure riser and complete drilling riser packages from Claxton
Claxton have an unrivalled array of pressure and connection options to suit your project – including full high pressure riser systems.

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. The project demonstrated a unique ability for Claxton to combined a large call off inventory with fast track design and manufacture. As a result, our clients campaign happened exactly when they wanted it to and the high pressure riser package performed in the field.

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.

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