METHOD FOR LAYING A PIPELINE OFFSHORE USING AN S-LAY SYSTEM PROVIDED WITH A STINGER HAVING A PLURALITY OF ROLLER BOXES

摘要

The present invention relates generally to pipeline laying and more particular to a method for laying a pipeline offshore using an S-lay system provided with a stinger (1) having a plurality of roller boxes (3a-3m). The method according to the invention comprises the steps of - feeding a pipeline (2) via the roller boxes of the stinger towards the seabed; and - tensioning the pipeline; wherein tensioning the pipeline comprises the step of - measuring as an indication of the degree of tensioning of the pipeline the distance between a first location (7) and a second location, wherein - the first location is stationary relative to the stinger and is located near the free end (1b) thereof, and - the second location is located on the pipeline downstream of the roller box (3m) that is nearest to the free end of the stinger relative to the feeding direction.