Conceptual Analysis of Stinger For Ultra-deepwater S-lay

As a traditional offshore pipelay technology, S-lay is still frequently utilized even in the deep water pipelays. It has two important devices: stinger and tensioner. Stinger controls the overbend of pipeline. Its geometry, length, and curvature, are the function of water depth, lay tension requirement and geometry and material of the pipeline. In this paper, an analytical method and the finite element methods are presented for researching the relationships of these parameters. Suggestions on the conceptual design of a novel deepwater stinger and the upgrade of an actual stinger have been provided as a favor of decision-making.