Study on the Performance Impact of Large Deformation on Mobile Wellhead Platform 163

Combined with part of the research content of Guangxi key research and development plan "Research and Development and engineering demonstration application of mobile wellhead platform in marginal oil field Weizhou in Beibu Gulf",this paper studies the performance of mobile wellhead offshore platform 163 with large deformation to ensure the safety of the platform. It includes establishing the finite element model of the movable wellhead platform, conducting modal analysis,searching the phase Angle under the action of wind and waves,and obtaining the phase Angle under the maximum working condition.Then the analysis under the action of wind wave and current alone,and the analysis considering p-delta and inertia force separately and simultaneously.The influence of different factors on the platform under large deformation is obtained, and the safety of the platform is checked under the maximum working condition.