A pipe lifting platform for subsea pipeline maintenance

A technology for submarine pipelines and platforms, which is used in pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc. The effect of stress and increased safety

Active Publication Date: 2017-05-31
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bundling operation of buoys or floating bags generally takes a long time, especially when the water depth is deep and the length of the lifting pipeline is large, and the number of buoys or floating bags is large, the offshore operation time for repair construction will be greatly increased.
[0004] In addition, the dredging before maintenance and the trenching and immersed pipe after maintenance currently require the use of hydraulic jet trenching machines, and the replacement of the above equipment or ships during construction also reduces the efficiency of pipeline maintenance

Method used

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  • A pipe lifting platform for subsea pipeline maintenance
  • A pipe lifting platform for subsea pipeline maintenance
  • A pipe lifting platform for subsea pipeline maintenance

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, the present invention includes a platform deck 1, a rectangular moon pool 2 is arranged on the platform deck 1, and a pair of slide rails 3 are arranged in parallel on both side edges of the moon pool 2, and the two slide rails 3 are slidably Two pile-fixing frames 4 are arranged, and each pile-fixing frame 4 can be vertically lifted and connected to a pipe truss 6 . Every pipe lifting truss 6 comprises more than two truss single sections 61 (such as figure 2 As shown), every two truss single sections 61 are connected by at least one clamping device 7 . It is a preferred embodiment that each pipe lifting truss 6 includes two truss single sections 61 .

[0029] Such as Figure 2-4 As shown, the card holding device 7 includes a fixed frame 71, which is fixedly connected to the top of a single truss section 61, and ...

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Abstract

The invention relates to a pipe lifting platform for submarine pipeline repairing. The pipe lifting platform is characterized by comprising a platform deck, a rectangular moon pool is arranged on the platform deck, a pair of sliding rails are arranged on the edges of the two sides of the moon pool in parallel, two pile fixing frames are arranged on the two sliding rails in a sliding manner, each pile fixing frame is connected with a pipe lifting truss in a vertical lift manner, each pipe lifting truss comprises two or more single truss sections, and every two single truss sections are connected through one or more hooping devices.

Description

technical field [0001] The invention relates to an offshore operation platform, in particular to a pipe lifting platform for subsea pipeline maintenance which can realize subsea pipeline lifting and lowering. Background technique [0002] With the rapid development of my country's offshore oil industry, newly developed offshore oil and gas fields are increasing year by year, and the total length of submarine pipelines is also increasing. However, with the increase of the total length of submarine pipelines, the damage of submarine pipelines is also increasing year by year. Corrosion and third-party damage may lead to the failure of partial sections of submarine pipelines. The partial sections of subsea pipelines that fail need to be replaced and repaired. The process usually includes the following implementation steps: ①Underwater dredging, cut off the damaged section and place it at the cut position of the pipeline Connect the hook of the side crane, and then arrange the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C25/00F16L1/26
Inventor 赵天奉储贵
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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