Hydrodynamic response simulation of Catenary mooring in the spar truss floating platform under Caspian Sea conditions

Nowadays, oil platform's moorings failure one of the most important challenges of the drilling industry in deep seas for the establishment and stability of the platform during operation. The behavior of these moorings plays an important role in the preservation of the platform with interaction by waves and environmental forces. In this regard a sample of non-classical Spar Truss platform was analyzed using Moses software in the Caspian Sea. Also hydrodynamic analysis of mooring system based on three-dimensional diffraction method was used; this analysis is based on time dependent and six degrees of freedom motion. Therefore response amplitude operator (RAO) of platform moorings was obtained by incident wave. The effect of removing a platform mooring was studied. The results indicate a high gradient change in Surge Movement. Also the results of this study can be used as a benchmark for spar platforms design in Caspian sea.