Insight

A sour service deployment

12 Jul 2019
A close look at Eni’s m-pipe deployment

James Priddy, Project Manager, shares the experience and technical aspects of a deployment of subsea carbon fibre and peek jumpers for Italian operator Eni, working alongside installation contractor Bourbon. This article explains why Magma’s m-pipe was selected and how it handled differently to flexibles and steel.

Magma developed m-pipe to simplify the subsea architecture and engineering in challenging environments such as deepwater, high pressure, high temperature and sour service; environments where steel and traditional flexible pipes can struggle. While the greatest benefits associated with Thermoplastic Composite Pipe (TCP) are often attributed to its application for deep-water risers, the past few years have seen operators adopting m-pipe for lower specification applications where it can simplify deployment and reduce cost. Some operators use these projects as an introduction to investigate how m-pipe performs and to familiarise themselves with the product in preparation for the move towards the carbon fibre generation of subsea architecture.

Meeting the challenges of sour service corrosion combined with an easy to handle lightweight solution is an increasingly common request from operators. Flexible hose and non-bonded flexibles have been a common choice for temporary subsea wellhead connections, due to the ability to flex around existing subsea architecture, however the combination of sour service and collapse resistance requirements has led to a significant reduction in the design life of flexible options. This has led to operators looking for a more reliable long-term solution such as m-pipe.

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