| 基于漏磁内检测的管道补口失效识别与判定方法 |
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| 引用本文： | 杨辉,王富祥,王婷,玄文博,曹京刚,雷铮强,李明菲,陈振海.基于漏磁内检测的管道补口失效识别与判定方法[J].油气储运,2019(5):516-521. |
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| 作者姓名： | 杨辉 王富祥 王婷 玄文博 曹京刚 雷铮强 李明菲 陈振海 |
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| 作者单位： | 中国石油管道科技研究中心·中国石油天然气集团公司油气储运重点实验室;中国石油管道公司智慧管道建设项目中心;中国石油管道局工程有限公司第四分公司 |
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| 基金项目： | 中国石油管道公司科技攻关项目"基于漏磁内检测的管道补口失效识别与评价技术研究";20160202 |
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| 摘 要： | 管道补口一旦发生失效,腐蚀介质自破损处渗入,将会严重影响管道完整性。基于漏磁内检测原理和管道补口失效形式,提出了补口防腐失效的识别与判定流程:通过分析管道补口结构特点、失效形式、可能产生腐蚀缺陷的位置与形貌特征,明确管道补口失效导致外腐蚀特征及其与漏磁内检测信号特征之间的对应关系,从而识别可能已经失效的管道补口。通过对多条管道的开挖验证,得出采用漏磁内检测技术识别与判定补口失效准确率,并验证了该方法的准确性,为基于漏磁内检测的补口失效识别与判定技术的工业化应用奠定了基础。(图7,表1,参20)
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| 关 键 词： | 管道 补口失效 外腐蚀 漏磁内检测 特征识别 类型判定 |
Identification and determination method of pipeline joint coating failure based on MFL ILI |
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| YANG Hui,WANG Fuxiang,WANG Ting,XUAN Wenbo,CAO Jinggang,LEI Zhengqiang,LI Mingfei,CHEN Zhenhai.Identification and determination method of pipeline joint coating failure based on MFL ILI[J].Oil & Gas Storage and Transportation,2019(5):516-521. |
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| Authors: | YANG Hui WANG Fuxiang WANG Ting XUAN Wenbo CAO Jinggang LEI Zhengqiang LI Mingfei CHEN Zhenhai |
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| Institution: | (PetroChina Pipeline R&D Center//CNPC Key Laboratory of Oil&Gas Storage and Transportation;Intelligent Pipeline Construction Center,PetroChina Pipeline Company;No.4 Branch Company,China Petroleum Pipeline Engineering Co. Ltd.) |
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| Abstract: | Once the pipeline joint coating fails, the corrosive medium will seep into the pipeline through the crack, which will seriously impact the integrity of the pipeline. In this paper, the identification and determination process of joint coating failure was put forward based on the principles of magnetic flux leakage in-line inspection(MFL ILI)and the forms of joint coating failure. That is to determine the corresponding relation between the feature of the external corrosion caused by joint coating failure and the feature of MFL ILI signals by analyzing the structural characteristics and failure forms of pipeline joint coating and the position and morphological characteristics of the possible corrosion defects, so as to identify the pipeline joint coating that may have failed. Then, based on actual excavation results of many pipelines, the precision ratio of MFL ILI technology to identify and determine the joint coating failure was calculated, and its correctness was verified. It provides the foundation for the industrial application of the joint coating failure identification and determination technology based on MFL ILI. |
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| Keywords: | pipeline joint coating failure external corrosion magnetic flux leakage in-line inspection(MFL ILI) feature identification type determination |
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