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Pipeline corrosion monitoring method and system and electronic equipment

A pipeline and preset position technology, which is applied in weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve problems such as large deviation, deviation of test results, and inability to effectively evaluate the safety status of corroded pipe sections

Pending Publication Date: 2022-04-22
SINOPEC SICHUAN TO EASTERN CHINA GAS TRANSMISSION PIPELINE CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ultrasonic guided wave monitoring technology tests the geometric dimensions of pipeline defects, and then calculates the local stress value at the defect according to ASME B31G and other related standards. , cannot effectively evaluate the safety status of the corroded pipe section;
[0010] 2) When the ultrasonic guided wave monitoring technology is used to monitor corrosion defects in the station pipeline, the solid impurities accumulated at the defects on the inner wall of the pipe will interfere with the ultrasonic guided wave signal, which makes the test results deviate from the actual situation. Cumulatively, the accuracy of the test results decreases

Method used

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  • Pipeline corrosion monitoring method and system and electronic equipment
  • Pipeline corrosion monitoring method and system and electronic equipment
  • Pipeline corrosion monitoring method and system and electronic equipment

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Embodiment Construction

[0061] like figure 1 As shown, a method for monitoring pipeline corrosion in an embodiment of the present invention includes the following steps:

[0062] S1. Obtain the first magnetic field gradient modulus when measuring the height in preset units at the first preset position on the axis line of the reference pipeline;

[0063] Among them, the reference pipeline can be understood as a standard pipeline in compliance with industrial application standards, free from any corrosion and other damages and defects;

[0064] The first preset position can be an artificially selected position, or any position on the axis line of the reference pipeline. Since the reference pipeline is not subject to any corrosion and other damages and defects, when the first preset position is the reference At different positions on the axis line of the pipeline, the obtained first magnetic field gradient modulus at the preset unit measurement height has very little deviation and can be considered to ...

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Abstract

The invention relates to the technical field of pipeline monitoring, in particular to a pipeline corrosion monitoring method and system and electronic equipment, and the method comprises the steps: obtaining a first magnetic field gradient modulus and a second magnetic field gradient modulus, and determining a damage grade index of a second preset position according to the first magnetic field gradient modulus and the second magnetic field gradient modulus, and then determining a current ratio between the current defect stress value of the second preset position and the yield strength corresponding to the material of the to-be-monitored pipeline according to the damage grade index, and performing early warning according to the current ratio and a preset early warning strategy, so that the stress safety state of the second preset position of the to-be-monitored pipeline can be effectively evaluated. And the accuracy of test results is high.

Description

technical field [0001] The invention relates to the technical field of pipeline monitoring, in particular to a pipeline corrosion monitoring method, system and electronic equipment. Background technique [0002] Oil and gas pipelines on the surface of oilfield stations are mainly subject to internal corrosion, which is mainly caused by electrochemical corrosion caused by the corrosiveness of the transport medium. The main corrosive components of corrosion in crude oil pipelines are water and various chemical additives. The purified crude oil in the long-distance pipeline has been dehydrated, the content of corrosive components is generally very small, and the internal corrosion is very slight. However, the gathering and transportation pipelines in oilfields have serious internal corrosion due to the untreated crude oil containing water, impurities and chemicals. The internal corrosion of natural gas pipelines is also relatively serious. Associated gas produced in oil field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 陈传胜于海安罗云怀翟富超傅宣豪
Owner SINOPEC SICHUAN TO EASTERN CHINA GAS TRANSMISSION PIPELINE CO LTD
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