Jet dredging pipe cleaner

A technology of pipe pigs and injection ports, applied in the direction of cleaning hollow objects, cleaning methods and utensils, chemical instruments and methods, etc., can solve problems such as pipe stuck pipes of pipe pigs, and achieve easy operation, strong practicability, cost reduction and Uncertainty effect on unblocking

Inactive Publication Date: 2014-02-05
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to avoid the deficiencies in the prior art and provide a jet dredging pig to solve the problem of the pig being stuck by the resistance of the silt in the pipeline during the pigging operation of the submarine pipeline. this question

Method used

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  • Jet dredging pipe cleaner

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0026] The core of the present invention is to provide a jet dredging pig to solve the problem that the pig is stuck due to resistance such as silt in the pipeline during the pigging operation of the submarine pipeline.

[0027] Such as figure 1 As shown, the jet dredging pig according to the present invention includes a pig body 1, the outer contour of the pig body 1 is cylindrical, and the diameter is smaller than the inner diameter of the pipeline to be pigged. The pig body 1 can be formed by It is made of high-density hard plastic, and can also be made of steel, aluminum alloy and other materials with better strength. The outer circumference of the ...

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Abstract

The invention discloses a jet dredging pipe cleaner which comprises a pipe cleaner body (1) with the outline in a cylinder shape, an annular pipe cleaner scraping plate (2) is arranged on the periphery of the pipe cleaner body (1), a fluid channel (3) penetrates the pipe cleaner body (1), a jet port (4) is formed in the fluid channel (3) at the position of the tail end of the pipe cleaner body (1), a pressure control valve (5) for controlling on-off of the fluid channel (3) is arranged on the pipe cleaner body (1), is opened when the head end fluid pressure of the pipe cleaner body (1) is higher than a preset value and is closed when the head end fluid pressure of the pipe cleaner body (1) is lower than the preset value. By using the jet dredging pipe cleaner to conduct pipe cleaning operation, risks of subsea pipe blocking in subsea pipe cleaning operation are greatly reduced, and subsea pipe blocking removing cost and blocking removing uncertainties are reduced. The pipe cleaner is simple, easy to operate and practical.

Description

technical field [0001] The invention belongs to the field of pigging operations for oil-gas-water mixed transportation subsea pipelines carried out in offshore oil and gas fields and terminals, and specifically refers to a jet dredging pipe pig. Background technique [0002] At present, in order to ensure the smooth flow of pipelines in oil and gas fields and improve pipeline transportation efficiency, regular pigging operations are required. During the normal production process, the oil field tracks and monitors the operating pressure of the submarine pipeline, and analyzes the leakage and blockage of the submarine pipeline according to the monitoring results. If it is found that the pressure of the sea pipeline fluctuates abnormally, the pipeline should be pigged. The purpose of pigging operation: 1) Improve the transmission efficiency of the pipeline: the decrease of the transmission efficiency of the pipeline will lead to the decrease of the transmission volume. For the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/053
CPCB08B9/0557B08B9/0558
Inventor 崔嵘张万兵熊永功戴毅庄凌志傅剑峰武国营杨波王文俊黄启宇徐鑫王成帅仵鹏
Owner CHINA NAT OFFSHORE OIL CORP
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