Advancing subsea architecture in the production and installation of rigid pipelines
Rigid pipelines are a fundamental component of subsea architecture, forming the subsea highway that transport oilfield fluids between the wellhead to the processing facility. TechnipFMC procures, fabricates and installs rigid pipelines in all areas of the world in water depths from tens to thousands of meters offshore.
Rigid pipelines are made from carbon steel, corrosion resistant alloys or hybrid construction with a carbon steel parent pipe and internal corrosion resistant cladding or lining. The pipelines are coated for external corrosion protection and insulation. Demanding insulation needs are met using a double wall pipe-in-pipe construction with high performance insulation concealed in the annulus, which may also include active heating cables.
Rigid pipelines range from small diameter 4-inch pipes for oilfield service fluids, to 18-inch infield lines, to larger diameter export trunk lines connecting offshore processing facilities to onshore receiving facilities.
We are experts in the design, assembly and installation of subsea rigid pipeline systems. We offer several rigid pipe products to meet the needs of operators who face a range of challenges from solving flow assurance issues to transporting highly corrosive fluids.
Worldwide delivery of rigid pipelines
Offering a variety of subsea pipe
TechnipFMC procures, fabricates and installs a variety of rigid pipeline systems including:
- Single pipelines
- Plastic lined pipelines
- Corrosion resistant alloy pipelines
- Direct electrically heated pipelines
- Electrically trace heated pipe-in-pipe
- Piggybacked pipelines
- Steel catenary risers (SCR)
- Free-standing hybrid risers
Advanced fleet of pipelay vessels
TechnipFMC clients benefit from one of the most advanced fleets of pipelay vessels in the industry. We specialize in the installation of rigid pipelines by reel-lay method, which is cost efficient and fast. Our capabilities include:
- Subsea construction
- Heavy lift operations for subsea infrastructure
- Variety of Installation methods including reel-lay, flex-lay, J-lay and S-lay
- Efficient and cost-saving installation techniques
- Ability to operate in extreme conditions
- Strategic operations from four spoolbases in the USA, UK, Norway and Angola
Electrically trace heated pip-in-pipe
We also specialize in the next generation of reeled pipe-in-pipe, Electrically Trace Heated Pipe-in-Pipe. The system combines the high passive insulation performance of a standard pipe-in-pipe process and the high heating efficiency of trace heating technology.
TechnipFMC has built a worldwide track record of developing and installing reel-lay plastic-lined pipelines for seabed static flowlines, including lateral buckling sections. A plastic-lined pipe provides a cost-effective alternative to conventional corrosion mitigation methods. Among its benefits, the pipe liner has a smooth internal surface, minimizing fluid friction losses. Also, the wall temperature of the carbon steel pipe is reduced, decreasing the axial compressive forces and lateral buckling.
Passive thermal insulation coatings on flowlines and risers control fluid temperatures and prevent formation of wax and hydrates, which affect flow assurance and can lead to pipeline blockage. TechnipFMC recognizes the need for thicker coating applications. Alongside predictive tools, our study of thick coating behavior has led to qualification of alternative field joint coating systems that induce lower stresses on the parent coating, minimizing the risk of failure during reel-lay installations.