| 摘要 |
Reel laying methods that do away with the need for onshore spoolbases by manufacturing pipe stalks using an s-lay vessel and temporarily storing the pipe stalks on the seabed in relatively shallow water at a near-shore location close to the offshore installation site. Several pipe stalks can be laid in parallel as completed full length pipelines. A reel-lay vessel thereafter retrieves and spools pipe stalk directly from the seabed onto reel in a single operation without the delays associated with performing tie-in welds. The method means that the entire pipeline may be pressurised during spooling to preserve the integrity of lined or clad pipes, and to combat ovalisation. |
