The Design of Flexible Marine Risers in Deep and Shallow Water

This paper reviews the design methodology of marine riser systems and the analysis performed to substantiate the design corresponding to two field conditions in deep and shallow water. The analytical and numerical tools adopted are capable of handling riser dynamic analysis for cases of survival, operation, interference, installation, and design life verification. The results of computer analyses are presented in this paper in graphical form for the riser system selected in the two cases. Output includes envelopes of riser co-ordinates, axial force and time histories of forces and wave surface profiles. The obtained results highlight the significance of design parameters for the combined flow of waves and currents on the selection of riser configuration.