Tieback analysis

We always endeavour to tailor each analysis project using both our customer’s requirements and our own experience. This reduces unnecessary costs, while providing valuable insight into the tieback operations when accounting for global dynamic loads.

Common tieback analysis includes but is not limited to:

• Vortex Induced Vibration (VIV) assessment – to assess the likelihood of VIV lock-on and whether VIV suppression devices and/or whether a VIV fatigue assessment is required
• Strength and Stability analysis – to determine the acceptability of the conductor, connectors and surface equipment connections / flanges under prescribed storm conditions
• Wave Fatigue Analysis – to estimate the conductor fatigue damage from repeated wave loading. The damage from wave fatigue will be combined with damage from VIV fatigue, if appropriate, to calculate the lifetime of the well
• VIV fatigue assessment – to compute VIV fatigue damage of the conductor if VIV lock-on was predicted from the VIV assessment. Provide recommendations for using VIV suppression devices