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CRP Subsea delivers innovative buckle mitigation buoyancy solution to protect Gulf of Mexico flowlines

Published by , Editorial Assistant
World Pipelines,

CRP Subsea has successfully delivered contracts providing more than 500 rotating buoyancy modules (RBMs), which adds to previous deliveries that have been installed and successfully operating for the past 3 years. They will also be attached to deepwater high-temperature, high-pressure flowlines to mitigate pipeline buckling on the seabed.

CRP Subsea delivers innovative buckle mitigation buoyancy solution to protect Gulf of Mexico flowlines

The RBMs will protect the pipeline by allowing it to roll on the seabed reducing lateral friction and berm creation, thus eliminating rogue buckles and reducing axial walking in the pipeline. Using this innovative buckling mitigation buoyancy solution will reduce the risk of pipeline failure and increasing the lifetime of the field.

Steve Bray, Commercial Team Manager at CRP Subsea states: “Our advanced rotating buoyancy solution is engineered to reduce lateral friction and berm creation, thereby generating repeatable and predictable pipeline behaviour. In addition, the rotating buoyancy design reduces the number of modules needed along the pipeline, significantly lowering overall project costs for operators. We are delighted to have been chosen to supply rotating buoyancy for these innovative projects and look forward to collaborating further in the future.”

Manufactured at CRP Subsea’s state-of-the-art manufacturing facility in Skelmersdale, UK, these RBMs are their latest delivery of what is now a growing track record over recent years.

RBMs are used to mitigate buckling in seabed pipelines. Buckling occurs during start-up and shutdown sequences as the thermal fluctuations cause pipelines to expand and contract, leading to problematic buckling along its length. Traditionally non-rotating cylindrical buoyancy modules have been installed along sections of the pipeline to reduce the weight and friction in that section and promote controlled bending. However, in certain conditions the modules have displaced seabed material to build ridges (berms) that have then restricted the lateral movement that the modules were installed to promote.

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