Coupled dynamics of tether and platform for a north sea wellhead TLP

摘要

This paper discusses various ways of coupling Tension Leg Platform dynamics to the dynamics of the tethers and risers. A practical and computationally efficient method for complete coupling is presented. A sample analysis using a MiniTLP in 1400m depth under North Sea conditions are presented. The preliminary investigation indicate the tether fatigue life could be considerably influenced by coupling effects whilst tether extreme loading would be less affected.