Self off-connecting auto desealing pipeline packer

A plugging device and pipeline technology, applied in the direction of pipe components, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problems of increasing oil and gas pipeline damage accidents, not being able to use one machine for multiple purposes, and affecting oil and gas production, etc., to achieve improvement Efficiency and economic benefits, reducing complexity and cost, and reducing the effect of oil and gas gathering and transportation costs

Inactive Publication Date: 2008-01-23
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to various reasons, such as the operation status of the pipeline beyond the design range, ship anchor operation, trawling fishing collision, seabed scour, impact of falling objects, medium corrosion, and improper construction operations, oil and gas pipeline damage accidents have increased year by year, seriously affecting oil and gas production
[0003] At present, the existing technology for sealing pipelines with a sealing machine can only perform sealing operations on the pipeline at the opening of the pipeline, and it is not

Method used

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  • Self off-connecting auto desealing pipeline packer
  • Self off-connecting auto desealing pipeline packer
  • Self off-connecting auto desealing pipeline packer

Examples

Experimental program
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Example Embodiment

[0022] First, as shown in Figure 1, Figure 2, and Figure 3, a self-disconnecting and self-unblocking pipeline blocker provided by the present invention includes:

[0023] A central tube 1, at least one through hole 11 is provided on the tube wall, and the number of through holes 11 in this embodiment is specifically two;

[0024] An airbag 2, which is sleeved outside the tube wall of the central tube 1, and an air hole 21 is provided on the airbag 2 at a position corresponding to the through hole 11 of the central tube;

[0025] A first protective plate 12, which is fixedly connected to the left end of the central tube 1, and a stepped hole 13 is provided in the center of the first protective plate 12;

[0026] A first splint 14 fixedly connected to the left end of the first shield 12, and a stepped hole 15 is provided in the center of the first splint 14;

[0027] A first piston 3, which is accommodated in the stepped hole 13 of the first guard plate and the stepped hole 15 of th...

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PUM

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Abstract

The invention comprises a central tube with a throughhole on the tube wall, a gasbag disposed outside the central tube wall, a first guard board firm-jointed at left end of the central tube and in the centre of the first guard board disposed a step hole, a first clamping plate firm-jointed at left end of the said first guard board and a step hole disposed in its centre, a first piston held in the step holes of the first guard board and the first clamping plate, at right end of the central tube disposed a second guard board, a second clamping plate and a second piston, a first joint firm-jointed at right end of the said second clamping plate, a second joint disposed at right end of the first joint and a wedge key held in the sloping hole of the said second joint.

Description

technical field [0001] The invention relates to a pipeline occluder, in particular to a pipeline occluder capable of self-decoupling and self-unsealing. Background technique [0002] Oil and gas pipelines are the main production facilities for the development and production of onshore and offshore oil and gas fields, as well as oil and gas transportation. Due to various reasons, such as the operation status of the pipeline beyond the design range, ship anchor operation, trawling fishing collision, seabed scour, impact of falling objects, medium corrosion, and improper construction operations, oil and gas pipeline damage accidents have increased year by year, seriously affecting oil and gas production. [0003] At present, the existing technology for sealing pipelines with a sealing machine can only perform sealing operations on the pipeline at the opening of the pipeline, and it is not yet possible to separate the sealing device from the feeding mechanism, so it cannot meet...

Claims

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Application Information

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IPC IPC(8): F16L55/134
Inventor 刘忠房晓明赵宏林张宏刘春厚曾鸣潘东民喻重山喻开安陈应华高峰
Owner CHINA NAT OFFSHORE OIL CORP
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