Rigid pipelines
Advancing subsea architecture in the production and installation of rigid pipelines
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Rigid pipelines are a fundamental component of subsea architecture, forming the subsea highway that transport oilfield fluids between the wellhead to the processing facility. Ä¢¹½tv procures, fabricates and installs rigid pipelines in all areas of the worldÌýin water depths from tens to thousands of meters offshore.Ìý
Rigid pipelinesÌýareÌýmade 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 insulationÌýconcealedÌýin the annulus, which mayÌýalsoÌýinclude active heatingÌýcables.Ìý
Rigid pipelines range from small diameter 4-inch pipes for oilfield service fluids,Ìýto 18-inch infield lines, to largerÌýdiameter export trunk lines connecting offshore processing facilities to onshore receiving facilities.Ìý
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
Ä¢¹½tv procures, fabricates and installs a variety of rigid pipeline systems including:
- Single pipelines
- Plastic lined pipelines
- Corrosion resistant alloy pipelines
- Direct electrically heated pipelines
- Pipe-in-Pipe
- Electrically trace heated pipe-in-pipe
- Piggybacked pipelines
- Steel catenary risers (SCR)
- Free-standing hybrid risers
Advanced fleet of pipelay vessels
Ä¢¹½tv clients benefit from one of the most advanced fleets of pipelay vessels in the industry. We specialize in the installation of rigid pipelines including mid and end structures. These can be installed via reel-lay, S-lay or J-lay methods from our vessels listed below.
Our reel-lay vessels operate out of four strategically placed spoolbases in the USA, UK, Norway and Angola.
Pipe-in-pipe
Ä¢¹½tv is the recognized subsea industry expert in the design, assembly and pipelay of reeled pipe‑in-pipe (PiP) systems. Our expertise helps operators address flow assurance challenges, especially in fields requiring very high thermal insulation performance. We have achieved a significant worldwide track record in this specialized rigid pipe product, with more than 1,100 kilometers of installed pipe-in-pipe.