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Reel-type submarine pipeline laying workboat and working method thereof

A technology for submarine pipelines and workboats, applied in the direction of pipe-laying ships, etc., can solve problems such as decreased stability, inability to install large-diameter reels, and reduced ability to resist wind and waves

Inactive Publication Date: 2011-04-20
LICE SCI & TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing reel pipe-laying ship cannot install a large-diameter reel, because the diameter of the reel increases, the center of gravity of the pipe-laying ship increases, the stability decreases, the ability to resist wind and waves is reduced, and the risk of offshore pipe-laying operations is increased sex

Method used

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  • Reel-type submarine pipeline laying workboat and working method thereof
  • Reel-type submarine pipeline laying workboat and working method thereof
  • Reel-type submarine pipeline laying workboat and working method thereof

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0023] like Figure 1 to Figure 7 As shown, the reel type subsea pipeline laying operation vessel of the present invention includes a hull 1, a superstructure 2, a reel 3, a reel lifting mechanism 4, a pipeline 5, a pipeline tensioning and straightening mechanism 6 and a reel driving mechanism 7. The hull 1 includes a deck 13 and a bottom shell 14 . Below the deck 13 of the hull, there is a sinking tank 11 for the reel 3 to sink. The sinking tank 11 passes through the deck 13 . The drum lifting mechanism 4 can drive the drum 3 to rise and fall along the sinking groov...

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Abstract

The invention relates to a reel-type submarine pipeline laying workboat and a working method thereof. The workboat comprises a boat body, a reel, a reel driving mechanism for driving the reel to rotate, a pipeline wound on the reel, and a pipeline tensioning and straightening mechanism; the boat body comprises a deck and a bottom case; a sinking slot for the reel to sink is formed on the lower part of the deck of boat body, and passes through the deck; the workboat also comprises a reel lifting mechanism; and the reel lifting mechanism can drive the reel to rise and fall along the sinking slot. A laying method for the workboat comprises the following steps of: reducing the height of the reel through the reel lifting mechanism to meet the requirement of stability on the boat; adjusting tensile force and a straightening angle of the pipeline through the pipeline tensioning and straightening mechanism; driving the reel to rotate by using the reel driving mechanism to lay the pipeline; and after the pipeline is laid, lifting the reel by using the reel lifting mechanism, and returning the workboat. The invention can greatly increase the diameter of the reel on the premise of keeping the stability of the workboat, so that the pipe diameter range of the laid pipeline is enlarged.

Description

technical field [0001] The invention relates to a submarine pipeline laying operation ship for laying underwater pipelines on the seabed and an operation method thereof. Background technique [0002] Submarine pipeline is an important part of offshore oil and gas field development project construction, which needs to be laid and installed by submarine pipeline laying operation vessel and ship-borne pipelaying equipment. Piping is supplied in production lengths of steel pipe which are joined at the surface and then laid in continuous pipe from the workboat to the seabed below. [0003] There are generally two approaches in connecting and laying continuous pipelines. One method is offshore welding of pipelines, that is, the pipe-laying ship first drives to the designated operating sea area, and then uses the welding station on the pipe-laying ship to weld the fixed-length steel pipes, and at the same time put the welded pipes into the water. According to the different ways o...

Claims

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Application Information

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IPC IPC(8): B63B35/03
Inventor 林金保范会渠
Owner LICE SCI & TECH SHANGHAI
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