With our experience providing component and system level engineering in the subsea and oil and gas arenas; we offer professional level consulting engineering and validation services.

Some of our capabilities and their applications are listed below.

Finite element analysis (FEA)

Our engineers operate ANSYS FEA software, routinely modelling subsea and riser equipment with 2D & 3D linear (elastic) analysis and non-linear (plastic) analysis.

  • Simplified axi-symmetric stress analysis for concept level designs
  • Detailed 3D stress analysis for complex components and structures
  • Analysis of parts and assemblies with complex contacts
  • Modal and frequency response analyses
  • Stress linearisation and assessment against API, ISO, DNV and NORSOK codes


  • Riser & mooring component capacity checks
  • Subsea structural and lifting analysis
  • Flange performance verification
  • Metal / metal seal design
  • Thermal ratcheting
  • Connector fatigue design

Riser analysis

We have in house riser analysis capability (Orcaflex) and code calculations (e.g. API Spec 17G) to quickly generate a robust basis of design for risers and umbilicals. We work closely with our sister company, 2H Offshore, to provide the level of riser performance verification required for your application.


  • Completion & workover risers
  • Drilling risers;
  • Umbilical analysis, e.g. guide wire and self supporting umbilicals

Fatigue design

We are experienced users of SN-curve fatigue assessment methods, such as DNV RP C203 (now DNVGL-RP-0005), having designed and tested full scale welds and connectors and qualified new fatigue curves. Experience includes SAF / SCF design, hot spot analysis, pipe design and weld design.

We also perform fracture mechanics assessments to BS 7910 / API 579; generating manufacturable designs that bring together material performance, inspection methods and operational reliability.


  • Girth weld design and inspection (e.g. AUT)
  • Pipe procurement (permissible roundness, ovality, thickness tolerances)
  • Connector and flange design
  • Sour service & HPHT fatigue design