Analysis of Marine Risers Subjected to Shoal/Deep Water in the Installation Process

Abstract The dynamics of the installation process marine risers subjected to shoal/deep seawater is studied. riser assumed be a cantilevered Euler‒Bernoulli beam. upper end clamped on vessel or drilling platform. lower connected Blowout Preventer Stack (BOPs) and Lower Marine Risers Package (LMRP). lateral fluid forces induced by sea wave current are introduced into governing equations motion. displacement stress distributions obtained solving equation via Galerkin’s discretisation scheme fourth-order Runge‒Kutta algorithm. results indicate that exhibits different behaviours under various depths because flow velocity ranging from surface seabed. In case shoal water, dominated wave, while in deep water it affected mainly wind velocity.