The Research Of Marine Riser Coupling And Inhibition Device

Jacket riser column is the only channel connecting the submarine pipeline oil gas and offshore platform structures,offshore oil and gas development and utilization of lifelines,offshore pipeline system is the weakest vulnerable link.Due to its long and thin structure,the marine riser is easy to failure and failure in the complex working conditions.Marine vibration pipe safety or not directly affects the marine engineering and the surrounding environment and marine biology,in the event of damage,can cause the economic loss and environmental pollution,will result in a casualties,and even cause serious secondary disasters.Therefore,the safety and reliability of marine riser has been the focus of marine oil and gas industry research.In order to ensure the safety and reliability of the marine riser,it is usually necessary to evaluate the safety and reliability of the marine riser.In this paper,the Multiphysics COMSOL software is used to carry out the numerical simulation of the pipe support.For single septal wall of the pipe string thickness numerical simulation,obtained the vibration of the pipe string optimal wall thick;for double riser columns arranged side-by-side,and arranged in numerical simulation.Then the riser column optimal safety distance;also for vibration pipe column group staggered angle of numerical simulation,obtained the vibration pipe column group optimal stagger angle of.Finally,This paper simulates the effect of fairing of vortex-induced vibration.Will study different fairing of vortex-induced vibration,respectively,set the fairing of the Angle is 120 °,90 °,60 ° and 45 ° respectively to carry on the model,select the optimal fairing,guarantee normal running of test string has important theoretical significance and practical significance.