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Marine pipelaying system for laying an offshore pipeline

A kind of pipeline and pipe layout technology, applied in the field of offshore pipe layout system, can solve problems such as unsatisfactory technology

Active Publication Date: 2008-05-21
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Known techniques for inserting accessories into the pipeline or at the end of the pipeline while laying out the offshore pipeline are unsatisfactory

Method used

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  • Marine pipelaying system for laying an offshore pipeline
  • Marine pipelaying system for laying an offshore pipeline
  • Marine pipelaying system for laying an offshore pipeline

Examples

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Embodiment Construction

[0031] In the figures, a "reel-and-deploy" pipeline deployment vessel 1 is shown for laying offshore pipelines. As in known pipeline-layouts, the pipeline 2 to be laid is manufactured in continuous length on the deck of the pipeline-layout vessel or in an on-shore factory and then wound on large spools 3 . The spool or storage reel 3 is usually a vertical spool, but horizontally arranged spools 3 are also known. In a horizontal arrangement, the line arrangement technique is also known as "turntable arrangement". The pipeline may be a rigid pipeline or a flexible pipeline as known in the art.

[0032] During pipeline laying, the pipeline 2 is unwound from the spool 3 .

[0033] The vessel 1 is provided with a pipeline delivery device 10 for launching the pipeline 2 from the vessel 1 along the bottom. The delivery device 10 is arranged here at the stern of the vessel 1 . It can also be arranged at other locations, for example in the well of a ship.

[0034] The dosing devic...

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PUM

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Abstract

A marine pipelaying system and method for installing an offshore pipeline that includes one or more accessories. The system comprises a vessel (1), a pipeline launch device (10) for launching the pipeline (2) from the vessel (1) in the direction of the seabed, and a clamping device (30) adapted to support the weight of the previously launched pipeline. The system further includes an accessory handling device, which is adapted to receive and support an accessory (40) and allow displacement therof between receiving position, wherein the accessory (40) is received by the handling device and a pipeline connecting position, wherein the accessory (40) can be connected to the pipeline (2).

Description

technical field [0001] The present invention relates to an offshore piping system for installing an offshore pipeline comprising one or more accessories. Background technique [0002] In most offshore pipelines to be placed on the seabed, it is necessary to install accessories (modules) onto the ends of the pipeline and / or at one or more intermediate locations along the pipeline. These modules are usually quite large and heavy and are generally designed to be welded to the pipeline. Examples of such accessories include: primary fittings, pipeline terminations (PLETs), branches, inline SLED assemblies, inline pipes, pipe valves, tee assemblies with support structures and mud-mats. [0003] Such pipeline components should normally be welded into the pipeline. Typically, the opposite end of the accessory has in-line connection features for connecting pipelines to those line connection features. However, it is also known that pipelines are usually welded or bolted on the outs...

Claims

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Application Information

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IPC IPC(8): F16L1/20F16L1/19
CPCF16L1/203F16L1/202F16L1/19F16L1/20
Inventor 朱普·鲁登伯格特伦斯·W·A·维梅杰
Owner ITREC BV
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