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Laying vessel for laying pipelines on the bed of a body of water, and relative operating method

A technology for pipelines and water bodies, which is applied in the directions of pipe laying ships, pipeline laying and maintenance, mechanical equipment, etc., and can solve problems such as obstructing the laying of towers.

Active Publication Date: 2013-11-13
SAIPEM SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Known technical solutions generally have the disadvantage that access to the laying tower is hindered and do not always allow easy positioning of the drag line on the pulley assembly

Method used

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  • Laying vessel for laying pipelines on the bed of a body of water, and relative operating method
  • Laying vessel for laying pipelines on the bed of a body of water, and relative operating method
  • Laying vessel for laying pipelines on the bed of a body of water, and relative operating method

Examples

Experimental program
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Embodiment Construction

[0049]figure 1 The number 1 in the figure generally designates a laying vessel for laying the pipeline 2 on the bottom of the body of water 3 (not shown).

[0050] The laying vessel 1 comprises a floating structure 4 ; a J-shaped laying tower 5 ; and an A&R system 6 . The floating structure 4 comprises: a hull 7; a weather deck 8; a stern 9; and a bow (not shown in the drawings).

[0051] In the example shown, a laying tower 5 is mounted at the stern 9 and is hinged for selective rotation about an axis of rotation A1 into a substantially horizontal rest position (not shown in the drawings) and a plurality of substantially vertical in the working position.

[0052] In one not shown variant, the laying tower is mounted at the bow and in another not shown variant, the laying tower is mounted on a platform along the bulwark of the floating structure.

[0053] The laying tower 5 defines a laying line 10 and has a top 11 equipped with means (not shown) for assembling pipes (not sh...

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PUM

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Abstract

A laying vessel (1) for laying pipelines on the bed of a body of water (3) has a floating structure (4); a laying tower (5) hinged to the floating structure (4) and designed to assemble and lay a pipeline (2) on the bed of the body of water; and an A&R system (6) for abandoning and recovering the pipeline (2); and wherein the A&R system (6) has a haul line (23, 24); and a sheave assembly (18) for guiding the haul line (23, 24), and which is fitted to the floating structure (4) to move between a work position at the laying tower (5), and a position away from the laying tower (5).

Description

technical field [0001] The invention relates to a laying vessel for laying pipelines on the bottom of a body of water. [0002] More specifically, the present invention relates to a laying vessel comprising: a floating structure; a laying tower hinged to the floating structure and designed to lay a pipeline on the bottom of a body of water; and an A&R system for abandoning (abandoning) and and wherein the A&R system includes: a haul line; and a pulley assembly for guiding the haul line at the lay tower. Background technique [0003] Laying vessels of the above-mentioned type are described in WO2009 / 082191A1, WO2009 / 145607A1, and WO01 / 07812A1. As is known, A&R systems are used when the laying work is interrupted by bad weather, and the pipeline being laid has to be abandoned on the bottom of the body of water and then retrieved in order to continue the laying work when the weather improves. Laying vessels must also be designed to respond to emergencies (especially sudden ch...

Claims

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Application Information

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IPC IPC(8): F16L1/16F16L1/20
CPCF16L1/20F16L1/202F16L1/16F16L1/19F16L1/166B63B35/03
Inventor 埃曼努埃尔·霍特卡洛·基奥迪尼
Owner SAIPEM SPA