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Risk assessment method for underground oil and gas pipeline

A technology for oil and gas pipelines and risk assessment, applied in special data processing applications, complex mathematical operations, instruments, etc., can solve problems that consume a lot of manpower and material resources, and achieve accurate and scientific results of risk assessment

Inactive Publication Date: 2015-06-17
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method requires accurate and sufficient data, but usually consumes a lot of manpower and material resources; the semi-quantitative risk assessment method is between the quantitative risk assessment method and the qualitative risk assessment method.

Method used

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  • Risk assessment method for underground oil and gas pipeline
  • Risk assessment method for underground oil and gas pipeline
  • Risk assessment method for underground oil and gas pipeline

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] Step 1: Create a set of evaluation factors

[0035] Factors are various quality factors of the evaluated object, in the present invention, they are various influencing factors that cause the failure of the buried oil and gas pipeline and the severity of the consequences caused by the failure. The factor set of the evaluation object is generally denoted by U. Assuming that there are m comprehensive evaluation factors affecting the risk of buried oil and gas pipelines, the comprehensive evaluation factor set of the evaluation object can be expressed as:

[0036] U={u 1 ,u 2 ,...,u m}

[0037] in the attached figure 2 Among them, there are 4 comprehensive evaluation factors affecting the risk of buried oil and gas pipelines, namely m=4, each sub-factor evaluation set:

[0038] u 1 ={u 11 ,u 12 ,u 13 ,u 14 ,u 15 ,u 16}

[0039] u 2 ={u 21 ...

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Abstract

The invention discloses a risk assessment method for an underground oil and gas pipeline. The risk assessment method comprises the following steps: A, determining a factor set which affects the pipeline risk assessment; B, determining a pipeline risk assessment alternative set according to assessment requirement; C, calculating the weight of each factor in the pipeline risk factor set by adopting a entropy weight method; D, calculating the weight of each factor in the pipeline risk factor set by adopting a combination analytic hierarchy process, and integrating the weights calculated in the step C into the calculation process of the analytic hierarchy process so as to obtain a final weight for each factor; E, performing fuzzy evaluation on single factors of pipeline risks by utilizing the weights obtained in the step D; F, iterating the calculation process of the step E so as to realize multilevel fuzzy comprehensive assessment on the risk of the underground oil and gas pipeline. By adopting the method, the problem that the weights of the factors of the risk of the pipeline are too objective or too subjective is avoided, and the calculated weight of each factor is more subjective and accurate; meanwhile, the risk of the underground oil and gas pipeline is assessed by establishing a fuzzy comprehensive assessment model, so that the assessment result is more accurate, subjective and reasonable.

Description

technical field [0001] The present invention relates to a buried oil and gas pipeline risk assessment method, in particular to a method for constructing an assessment model using a multi-level fuzzy assessment method, and realizing risk assessment for buried oil and gas pipelines based on historical data and a multi-objective decision-making index weight calculation method. Background technique [0002] With the rapid development of my country's petroleum, chemical, metallurgy, electric power, machinery and city gas industries, the importance of various pipelines has become increasingly apparent. As a conveying system, due to the variety of media it conveys, such as flammable, explosive, toxic, corrosive and high-pressure properties, it is very prone to leakage, explosion, burning and poisoning. The occurrence of these incidents will often cause loss of people's lives and property and cause pollution to the environment, so ensuring the safe operation of pipelines has always ...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06F17/16
Inventor 李克文王义龙
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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