Abstract: A method of fitting a lining in a pipeline is disclosed comprising the steps of providing a flexible tubular liner having a cross section sized to fit the pipeline, attaching a pig which is a close fit in the pipeline to an end of the liner and locating the pig in the pipeline. The liner is compacted to a reduced cross-section on or prior to entry to the pipeline to facilitate passage of the liner along the pipeline, and a fluid pressure is applied to the pig to cause the pig to pass along the pipeline and, to draw the liner into the pipeline.

Abstract: The invention provides a method for laying a pipeline on a floor located under water, wherein a pipe string is lowered from the pipe-bedding installation to the floor, characterized in that the part of the pipe string situated between the water surface and the floor is at least partially supported by bearing mechanism which engage on the pipe string, wherein an axial displacement is realized between the bearing mechanism on the one hand and the pipe string on the other.A heavy pipeline can hereby be laid on a deep seabed, for instance at a depth in the order of magnitude of 1-3 km, and/or the capacity of the draw benches on board the pipe-bedding installation can be reduced.

Abstract: The invention provides a method for laying a pipeline on a floor located under water, wherein a pipe string is lowered from the pipe-bedding installation to the floor, characterized in that the part of the pipe string situated between the water surface and the floor is at least partially supported by a bearing surface or trunk tubes which engage on the pipe string, wherein an axial displacement is realized between the bearing surface on the one hand and the pipe string on the other.A heavy pipeline can hereby be laid on a deep sea-bed, for instance at a depth in the order of magnitude of 1-3 km, and/or the capacity of the draw benches on board the pipe-bedding installation can be reduced.