Method and equipment for installing marine pipelines to extremely great water depth

摘要

A new and improved apparatus for installing marine pipelines in a body of water and the method of using the same including multiple support units having buoyancy tanks and roller-tensioner means for operatively securing the support units to the pipeline submerged in the water at spaced intervals along the pipeline to control the pipeline configuration between a laying vessel and the bottom of the body of water. The support units include control means which is preset or has a remote controller operable from the laying vessel to adjust the buoyancy of the buoyancy tanks and the tension on the tensioner means to control the position of the support units on the pipeline and the amount of lifting force to the pipeline.