m-pipe® riser application video
m-pipe® applications and benefits
m-pipe® is a high performance composite pipe ideal for use in reliable subsea production systems due to its light weight, high strength, high flow rate and resistance to corrosion, chemical attack and fatigue loading. The inherent benefits of m-pipe® have the potential to simplify subsea piping design and architecture. Critically, m-pipe® also simplifies subsea installation procedures and operational activities, to drive improvements in long term reliability, such as a reduced need for inspection, maintenance, repair or replacement.
m-pipe® is proven to substantially reduce subsea project costs and furthermore reduce subsea project deployment risk, for example through a reduction in the need for large riser buoyancy modules or the ability to use smaller well intervention vessels. m-pipe® has a high strain capability ten times that of steel, plus an ability to accommodate axial compression loads without birdcaging or excessive fatigue damage rates. This allows m-pipe® to be deployed in simplified and lower cost subsea piping configurations that are not possible with steel or non-bonded flexible pipe, either due to weight or axial compression limits.
Subsea risers are the critical connection between the seabed and the floating production system for transfer of production and injection fluids. Their design requirements can be technically demanding, pushing design processes and conventional materials to their limits, and yet attaining high levels of performance reliability are essential for the industry to achieve.
m-pipe® simplifies this subsea riser design challenge and m-pipe® has applications in all the conventional riser arrangements such as catenary, wave catenary, free standing (SLOR) and top tensioned risers. In these arrangements m-pipe® offers technical and commercial benefits in terms of installed cost (CAPEX) and life of field costs (OPEX). In these conventional subsea riser arrangements m-pipe® facilitates very significant reductions in riser payloads and thus enable deployment of deep and even ultra-deep water risers using Second Tier installation assets rather than First Tier assets.
If subsea riser arrangements are specifically optimised around the performance characteristics of m-pipe® then further benefits are realised. A key design issue in any riser system is the drag loading on pipe and buoyancy modules or aircans. Steel pipe riser systems use thick insulation, heavy pipe and large aircans and cause high drag loads, which drive installation specifications, risks and costs. With m-pipe® the buoyancy requirement is small and this dramatically reduces drag loads, allowing further reductions in buoyancy requirements in a positive spiral.
m-pipe® SLOR is a free standing riser for deep sea riser production that is specifically developed around the performance capabilities of m-pipe®. The insulated pipe has a low in water weight and small drag diameter. An m-pipe® SLOR uses an ultra-lightweight composite aircan design that delivers a substantial reduction in both aircan size and offshore lift requirements.
Even in 3,000m depths the installation hook load of an m-pipe® SLOR is less than 50Te. An m-pipe® SLOR also takes advantage of the ability of m-pipe® to accommodate compression, and configures the upper jumper in a ‘dogleg’ rather than a ‘catenary’ arrangement. This greatly simplifies the installation for the jumper, improves fluid process flow and readily allows coil tubing intervention for remediation or riser base gas lift. m-pipe® SLOR is the next generation riser that meets Operator subsea challenges for commercial extraction of deep water hydrocarbon reserves. Download fact sheet 2H composite riser technical paper
Magma also commissioned an independent report from Calash, the specialist energy sector strategic advisory firm, to analyse the economic benefits of flexible m-pipe® SLOR versus traditional steel pipe SLOR risers. This detailed report shows that an m-pipe® SLOR riser saves 43% versus a steel SLOR.
m-pipe® SLOR freestanding riser
FPSO riser installations
Compact lightweight riser buoyancy
Riser base and jumper spool