Marine Risers

Peritus’ capability in Risers is founded on our leading industry personnel, with experience to develop innovative solutions. Our personnel have experience in the design and construction of riser systems in shallow and deepwater applications whilst Peritus’ forward focus is on dynamic risers in deep and ultra-deep waters.

For many deepwater systems, risers are an integral part of the subsea production or export system. At Peritus, we adopt a system level overview to ensure individual components fit with the overall functional requirements, and that constructability and installation aspects have been fully considered in the riser design. Peritus’ capabilities include riser interface design with subsea systems (flowlines, pipelines and facilities) and surface platforms.

Peritus’ skills in Risers include the following aspects:

• Through life cycle engineering
  • Appraise, Select, Define, Execute, Operation Support, Decommission
• Independent design verification
• Development and implementation of inspection, maintenance and repair strategies
• Projects and interface management
• Engineering of riser systems:
  • Top Tensioned Risers (TTR)
  • Steel Catenary Risers (SCR)
  • Flexible Risers and Umbilicals
  • Hybrid Risers – Free-Standing, Bundles, Tension Leg Risers
• Engineering of ancillary systems
  • Flexible and stress joints
  • Bend Limitors (Stiffeners, Restrictors, Bell-Mouths)
  • Hold down tethers and clamps
  • J- and I-tubes
  • Buoyancy modules / tanks and mid-water arches
  • Riser Bases
  • TLP tendon connectors
• Global static, dynamic and installation analyses (Flexcom® and Orcaflex®)
• Mooring analysis (Ariane®)
• Coupled mooring and riser modeling
• Analysis of riser cross sections, including flexible risers and umbilicals
• Fatigue and VIV analysis
• Riser interference / clashing analysis
• Material selection
• Component design using advanced tools
  • Finite element analysis (ANSYS® and ABAQUS®)
  • Testing with statistical simulations, including test program design
  • Implementation, management and supervision
• Supervision of riser installation
• Commissioning of risers

Peritus’ senior technical team consists of industry experts with extensive international knowledge and expertise in difficult or deepwater environments. Members of this team have worked on some of the most innovative projects of their time, in some of the world’s most challenging offshore environments. The following sections provide a list of these riser projects, in major oil and gas provinces such as the Gulf of Mexico, West Africa, Southeast Asia, Brazil, Australia and North Sea.

The primary External analysis tools used by PERITUS are:

• Orcaflex
• Orcalay
• Mathcad
• MCS Pipelay
• Solidworks
• Abaqus
• Ansys

In addition to discipline engineering roles, Peritus can and has provided Project Management Services in the form of provision of owners engineering teams, supervising the EPCIC contractors during Develop and Execute.  Peritus are able to use their own management and project support systems if required.  Peritus’ Management Systems are certified to ISO 9001.