We design pipelines for the severest conditions and through EPCI interdependence our solutions focus on safety, constructability and operability. Using state-of-the-art pipelay technology and spooling capabilities for flexible pipe, we install rigid and flexible product by means of S-Lay, J-Lay, Flex-Lay and Reel-Lay from the beach to ultra-deepwater.
Our welds meet the most stringent industry criteria, achieved through an industry recognized automatic welding capability which utilizes (patented) welding technology developed and supported by three global welding R&D centers, a dedicated Tendon and Multi-Joint Welding Facility, and the execution of rigorous procedures and intensive training.
- Rigid pipelines - FBE, wet-insulation or CRA coated (mechanical or metallurgical bonded), piggy-back lines and pipe-in-pipe
- Risers – Top Tension, Bundled Hybrid, Flexible and SCRs (Steel Catenary Risers)
- Flexible pipelines – umbilicals
Engineering
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Through technology we assess reservoir fluid characteristics to determine flow assurance. The resulting system architecture, including pipelines and control systems, is designed to meet economic, startup and operational needs. R&D focuses on emerging flow assurance technologies, riser systems and installation techniques to address the challenges of hydrocarbon properties, seafloor topography and meteocean conditions, affecting all project phases.
Engineers design pipelines to mitigate hydrate formation, slugging and deposits, ensuring hydrocarbon delivery through safe and cost-effective production for all operating conditions. During FEED we determine pipeline size and materials, cathodic protection, instrumentation and optimal pipeline routes. Optimizing pipeline corridors and minimizing crossings, routes are designed with facility approaches and departures to ensure constructability. Particular attention is given to abandonment and recovery requirements for facility hook-up, and shore approaches where offshore pipe terminates onshore.
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Construction
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Modular pipelay equipment on our vessels uses the latest automatic welding technology, driving quality and productivity for rigid pipeline S-Lay and J-lay. Our welding personnel undergo extensive training in-house and at specialized industry facilities, to ensure we produce the highest quality welds in the field.
The core technology of our automatic welding systems is applied uniformly in both the Bug and Band Welding System (JBBS), as well our highly productive Automatic Welding System (JAWS) for large diameter pipelines, of which we expect to launch a highly improved second generation in 2012. This produces high-quality welding for deepwater pipelay, delivering double- and quad-joint pipe and tendons, heavy-wall SCRs and fatigue-sensitive flowlines, to meet stringent welding criteria. For Corrosion Resistant Alloy (CRA) pipe, we produce exceptional quality welds to ensure we can meet stringent acceptance criteria for sour service oil or gas pipelines.
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Installation
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We execute precise, cost-conscious offshore campaigns using installation techniques to ensure riser integrity and pipeline stability on the seafloor. Our fast-transit construction vessels and moored derrick barges undertake shallow and deepwater S-Lay, J-Lay, Reel-Lay and Flex-Lay of numerous coated pipe and pipe-end infrastructure including PLETs, PLEMs and in-line sleds. In-house divers assist with shallow water installation, and use state-of-the-art Saturation diving systems and ROVs to enable 24/7 operations.
We protect existing pipelines and cables when installing new pipelines in congested fields, where complex infrastructure poses challenges. In shallow water we use crossing preparations, such as ‘mattress’ over existing infrastructure, on which new pipe is laid. We also trench and bury to protect new pipe from man-made or environmental disturbance. In deepwater, we meet clearance tolerances using innovative techniques to navigate existing infrastructure, proximity between installation vessels and production facilities and the influence of meteocean conditions on infrastructure and vessels.
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