考虑内外检测数据对齐的管道完整性评价技术研究-971f6ca9.pdf

检测技术

DOI：10.3969/j.issn.1001-2206.2022.05.009

考虑内外检测数据对齐的管道完整性评价技术

研究

刘欢

中国石油天然气股份有限公司华北油田分公司，河北任丘062550

摘要：针对目前内外检测数据的对齐主要依靠人工核查和开挖验证，无法充分利用挖掘检测信息的问题，分

别从内检测和外检测数据中提取特征要素信息和里程信息作为输入、输出变量，采用极限梯度提升

（XGBoost）算法建立两者的映射关系，预测内检测点在外检测点的里程，以内检测信息为基准，采用逐步平

移实现内外检测数据的对齐，并根据对齐结果进行综合分析。结果表明，数据对齐后所有站场和阀室的里程误

差均在5m以内，经纬度分布变化高度一致，对齐结果点满足精度要求；实例分析中管道受交、直流干扰程度

较小，管道全线阴极保护正常，虽然土壤腐蚀性较强，但存在金属损失且防腐层破损处未见明显的腐蚀坑和腐

蚀产物，说明管道运行状态良好。研究结果可为提升管道完整性管理水平提供理论依据。

关键词：内检测；外检测；数据对齐；完整性；评价

Researchonpipeline-integrityevaluationtechnologyconsideringalignmentof

internalandexternalinspectiondata

LIUHuan

PetroChinaHuabeiOilfieldCompany,Renqiu062550,China

Abstract：Asthealignmentofinternalandexternalinspectiondatamainlyreliesonartificialjudgmentandexcavationverification,the

inspectiondatacannotbefullyutilizedandexcavated.Consideringthisproblem,thispaperextractsthecharacteristicelementsand

mileageinformationfromtheinternalandexternalinspectiondataasinputandoutputvariables,respectively,andadoptstheextreme

gradientboosting(XGBoost)algorithmtoestablishthemappingrelationshipofthetwotopredictthemileageoftheinternalinspection

pointattheexternalinspectionpoint.Withtheinternalinspectiondataasabenchmark,thealignmentresultofinternalandexternal

inspectiondataisobtainedbygradualtranslation,andthecomprehensiveanalysisismadeaccordingtothealignmentresult.Theresults

revealthatthemileageerrorsofallstationsandvalvechambersarewithin5mafterdataalignment,andthelatitudeandlongitude

distributionchangesarehighlyconsistent,whichmeansthealignmentresultpointsmeettheaccuracyrequirements.Inthecase

analysis,thepipelineisslightlyaffectedbyalternatingcurrent(AC)anddirectcurrent(DC)interference,andthecathodicprotectionof

thewholepipelineisnormal.Althoughthesoilishighlycorrosive,noobviouscorrosionpitsandcorrosionproductscanbefoundin

placeswithmetallossesandanticorrosionlayerdamage,whichindicatesthegoodoperatingconditionofthepipeline.Theresearch

resultscanprovideatheoreticalbasisforimprovingthema