m-pipe® end fittings explained
6 inch m-pipe® bend test
Magma m-pipe® is a high performance carbon fibre and Victrex PEEK thermoplastic composite pipe manufactured using a fully automated robotic 3D laser print process. Engineering excellence and detailed structural design result in a high specification pipe that has been shown to reduce risks and reduce costs for risers, jumpers and intervention lines and most subsea project applications.
m-pipe® performance is backed by a DNV GL qualification programme and DNVGL-RP-F119 Recommended Practice for Thermoplastic Composite Pipe.
If you are a subsea or deepwater specialist join the Magma m-pipe® community for more m-pipe® resources and technical papers.
Answers to a whole range of frequently asked questions about Magma Global and m-pipe® can be found at our FAQ page.
- High temperature capability for hydrocarbons, gas and water
- Corrosion resistant to seawater, H2S and CO2
- High pressure capability up to 20ksi
- Smooth pipe bore for high flow rate
- Light weight: 20% of density of steel pipe
- High fatigue performance offers long life
- High strain capability for reduced MBR
Magma m-pipe® is manufactured using the highest quality materials, Victrex PEEK and Toray carbon fibre. Carbon fibre is combined with the PEEK in a fully automated robotic 3D laser print process to form the m-pipe® wall laminate.
Carbon fibre is already used extensively in the automotive, aerospace, marine and nuclear industries. Carbon fibre is manufactured to offer a range of performance characteristics, and Toray T700 delivers the best performance of commonly used carbon fibres.
Victrex PEEK is the highest performing thermoplastic polymer available. Due to its resistance to common oilfield chemicals, low permeation and wear resistance, it has a long history of application for use in critical components. For example it has been widely used for demanding sealing applications in the oil and gas industry.
Magma manufacturing expertise and a ‘state of the art’ high-volume laser printing process are combined with a small number of premier quality, high performance materials. m-pipe® manufacturing is fully automated and robotic, providing consistent product quality in a continuous high speed process.
This approach, combined with an efficient manufacturing process, delivers a high specification pipe of known quality for subsea applications and projects, and each pipe is supplied with a material manufacturing dossier for materials and manufacturing traceability.
Magma has an ‘oil field’ design approach to termination of m-pipe®, to enable the transition from composite pipe to steel pipe or to a steel fitting such as standard flanges, Grayloc or other hubs, threaded connections or a weld preparation.
Magma has two types of end fitting. The Magma Type 1 end fitting has an unrestricted bore and the Type 2 end fitting is designed to allow for in-field end terminations. Type 1 end fittings have a build-up on the end of the pipe, using the same automated manufacturing methods and materials as the core pipe. The thickened pipe wall is then machined to tapered profile and then interfaced with a steel collar and interface hub. The end fitting assembly is heavily preloaded to produce an efficient and reliable structural load path. A preloaded AX type gasket is used between the metallic hub and pipe build-up, seated in a PEEK seal pocket on one side and an Inconel 625 pocket on the metallic side.
This arrangement provides reliable structural performance and sealability. In addition, the m-pipe® end fitting can be located directly in the product load path, and is designed to accommodate extreme and fatigue loading in axial and bending orientations.
This design approach also allows end fittings to be supplied with integral taper joints, to allow efficient structural transition from standard pipe walls in the subsea riser dynamic section to a point of fixity, such as at an interface with a subsea wellhead or vessel porch.
End fittings explained by Magma Technical Director Steve Hatton
m-pipe® addresses the ongoing deployment challenges faced by oil and gas operators, including the need to deploy flexible subsea risers, jumpers and intervention lines efficiently. m-pipe® has a smooth bore and is manufactured in continuous lengths of up to 4,000m in internal diameters of 2” to 12” and in discrete lengths up to 24″ diameter. With its low weight, around ten times lighter in water than steel pipe, m-pipe® reduces deployment costs through utilisation of smaller more cost-effective deployment vessels and rapid and efficient pipe spooling, deployment and retrieval.
Complementing the flexible and lightweight design of m-pipe, Magma also provides complete deployment and retrieval packages, including the IDP Integrated Deployment Package vessel back-deck system with built-in reel for hydraulic light well intervention. This keeps deployment vessel size down, minimises back-deck footprint and maximises vessel operational returns for operators. It also helps to improve operational issues such as allowing higher pressures and fluid flow rates to be achieved. Download an m-pipe® back-deck reeler package fact sheet
Magma can deliver a full package that offers operators m-pipe® pipe rental or sales or a combination of both, together with full after-sales support.
Magma m-pipe® applications and subsea deployment and how it reduces cost and risks.