Global Riser Analysis is performed to asses the 'fitness-for-purpose' of the well conductors, risers, connectors, flange connections, etc. The analyses are performed for each phase of the development including drilling, completion, work-over and abandonment. The main focus is to verify the structural integrity and fatigue life of the system for the required lifetime of the well.
Here are some examples:
- Exploration and appraisal wells
- Platform drilled, tieback and sub-sea wells
- Centraliser requirements and spacing
- Sub-sea well operations from a jack-up, semi-submersible and other vessels
- Drilling marine risers and landing strings
- Wellhead fatigue
- Rigid and flexible riser systems
- Soil sensitivity and piling fatigue
The types of analyses typically performed for normal operation and accidental conditions are:
- Strength and stability
- Vortex induced vibration (VIV)
- Wave induced fatigue (WIF)
- Thermal
- Snag and docking loads
- Connection verification
- Centralisation