FEM Analysis and Experimental Tests of Rigid Riser Hanging System

Abstract

The article presents the analysis, project, and experimental examination of an original rigid riser for Coil Tubing Pipes. The principle of riser operation is based on the use of friction forces. The research included the FEM analysis of the designed riser, calculations of the required bolt tensions, and checking the effect of the clamping force on stress distribution in the pipeline. The results of computer simulation were verified on a specially designed test rig. The described riser design was implemented on the LOTOS Petrobaltic platform, thus eliminating the need for purchase and installation of expensive elastic risers.

Dynamic Response Analysis of Drill Pipe Considering Horizontal Movement of Platform During Installation of Subsea Production Tree

“…Hu et al [12] established a model varying the drill pipe length to analyse the dynamic effect of environmental loads on the stress and displacement and the model was solved by the Keller box method. Olszewski et al [13] analysed the effect of the clamping force on the stress distribution of a riser with finite element software and verified it on a specially designed experimental platform. Wodtke et al [14] analysed risers using the finite element method under the conditions of ocean load and connecting to different mining platforms to evaluate their operation conditions.…”