Production & Export Risers
Wide-ranging expertise in all types of production and export risers based on 30 years’ designing, delivering and innovating systems to meet evolving industry needs.
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Independent, industry-leading riser designs
We leverage our many years of experience to quickly identify and design riser systems to suit our client’s often complex and interrelated project requirements. We have had key responsibility on many cutting-edge projects, working with a wide range of operators and installation contractors.
Being independent means we can engineer production system risers as the main contractor, sub-contractor, as part of an integrated project team or as a certification and verification agent (CVA).
Our experience in production risers includes almost every combination of vessel type, geographical location and riser type that have been implemented to date.
Steel catenary & lazy wave risers
We are constantly adapting and evolving our approach to free-hanging steel riser design and integration management as offshore developments move into deeper waters and harsher environments.
We have conducted hundreds of feasibility studies, detailed design, verification and life extension projects for free-hanging steel risers of all sizes, functions, vessel types and water depths. This extensive experience means that we can pinpoint just the right riser configuration for your project.
The STRIDE joint industry project was initiated and led by 2H in the 1990s and involved more than 20 companies. The groundbreaking project defined the key SCR design parameters such as touch-down point interaction, vortex-induced vibration and the effects of pipe reeling on girth weld fatigue.
Top tensioned risers
TTRs are one of the most challenging riser systems to engineer due to the many interfaces that need to be accommodated. Our TTR specialists understand the complexities involved, from the interaction between production, injection and drilling risers to minimizing the wellbay footprint and accommodating tensioners or aircans, jumpers and piping. We have the technical expertise and project management skills to design, procure, deliver and extend the life of the most complex TTR systems.
Our project experience includes dry tree production and surface BOP drilling riser systems for TLP, and spar production facilities. We have designed TTRs in a range of diameters, water depths and environments, including the North Sea, Gulf of Mexico, West Africa, and Brazil and have significant experience managing specification, procurement and delivery of components and ancillary equipment for these systems.
Freestanding hybrid risers
We have designed many of the freestanding hybrid riser systems conceived to date. From the first ever tow-out hybrid riser for Girassol, to the Single Line Offset Riser (SLOR™) and complex pipe-in-pipe Concentric Offset Risers (COR) used on Kizomba A and B. All hybrid risers used today have followed the design approach of our pioneering systems.
Designing for different environments and operators has taught us to identify and understand the numerous intricacies and challenges posed by hybrid riser projects, meaning that we can reuse the best features to create the most suitable system for new developments.
Flexible pipes are complex structures that require specialist engineering and a multi-disciplinary team to ensure an optimised design, careful manufacturing, reliable installation and operation, and long-term integrity.
From concept design to life extension, we work with all types of operators, EPCI contractors, and directly with OEM. Our collaborative approach has allowed us to gain in-depth knowledge and expertise that adds value to every flexible pipe and umbilical project. We have experience in all major offshore exploration regions, in shallow to ultradeep water, and with old and new pipe designs. We work with standard configurations but also have the expertise to developing new and novel configurations for both O&G and renewable energy projects.
Composite pipe is a new material technology that offers several advantages in offshore projects. Its improved fatigue and corrosion resistance and reduced cross-sectional weight compared to conventional steel pipe can help overcome technical challenges particularly in deeper water and harsh environments.
We have established good working relationships with the key composite pipe suppliers, but our independence means we focus on delivering the optimal technical and commercial solutions to our clients. Our experience covers a range of composite structures including thermoplastic composite pipe and composite un-bonded flexible pipe.