| 摘要 |
Method for laying a pipeline onto a seabed from a lay barge, the pipeline having an inner corrosion proof metallic cladding that is closely fitted with metallic contact to an outer pipe material that is less corrosion proof. The method includes reeling a section of the pipeline onto a pipe laying drum, while an overpressure of 5-25 bar is maintained within the section by a pressurized fluid inside the section, b) joining a further pipeline section to the section already reeled onto the pipe laying drum, while the pipeline is motionless without mechanical movement, as the overpressure can he relieved as long as the sections are without mechanical movement, c) applying an overpressure of 5-25 bar within the sections and the further section is reeled onto the pipe laying drum, d) and joining several sections together and reeling the joined sections onto one or several pipe laying drums by repeating step b) and c) until the predetermined pipeline length is achieved. The pipeline is laid from the lay barge onto the seabed using a conventional method, while an overpressure of 5-25 bar is maintained within the pipeline by means of a pressurized fluid until the pipeline is correctly placed onto the seabed. |
