This study investigates the nonlinear dynamic motions of the rotating drill pipe model caused by the Magnus effect by using a three-dimensional fully parameterized beam element based on the absolute nodal coordinate formulation, which can account for the rotary inertia of the pipe. Nonlinear coupling of bending and torsional deformations was imposed by a rotation matrix transmitted twisting along the length of the pipe. The three-dimensional hydrodynamics forces of the pipe model were computed using ANSYS Fluent and applied as an external force vector on the pipe model. The applicability of the presented model is confirmed by the comparison of simulation results and experimental results.
During riserless drilling operations in oil and gas explorations, the rotation of the drill pipe generates lift force when operating under ocean currents, which is called the Magnus effect, as shown in Fig. 1. The dominant lift force parameters that can influence the Magnus effect are the flow velocity and the rotational velocity of the pipe. Depending on the length of the drill pipes used in the drilling operation, the bending deformation as a result of the Magnus force and the drill pipes can also be assumed to be flexible structures compared with their diameter and length ratio, although these pipes are generally made of steel.
