完整性管理李新战等:基于正交试验的管道环焊缝风险排查方案研究油气田地面工程https://yqtd.cbpt.cnki.net基于正交试验的管道环焊缝风险排查方案研究李新战1邹亚飞1王荡1陈杭2王晓黎31国家管网集团西气东输公司甘陕输气分公司2中国石油长庆油田分公司第十采油厂3大庆油田设计院有限公司摘要:油气管道环焊缝是管道系统的重要组成部分。近年来,管道环焊缝质量问题日益突显,为保障油气管道安全平稳高效运行,各油气管道管理单位组织开展管道环焊缝风险质量排查,但排查及治理存在工作量大、复评缺陷点位占比不高、排查效率低等问题。为提高风险排查效率,以历史管道环焊缝开挖复拍数据为研究对象,系统性分析其质量影响因素,以提高缺陷焊口开挖准确率为考核指标,引入正交试验法,通过对各类影响因素进行分析比对,识别质量影响的主要因素。分析结果表明,管道环焊缝开挖准确率影响因素敏感度由大至小顺序为:内检测异常程度>施工标段>底片复评等级>焊口类型>变壁厚,通过构建环焊缝开挖优化模型,对进一步提升管道环焊缝排查效率具有指导意义。关键词:油气管道;环焊缝;正交试验;失效;风险排查ResearchonRiskInvestigationSchemeforPipelineGirthWeldsBasedonOrthogonalExperimentsLIXinzhan1,ZOUYafei1,WANGDang1,CHENHang2,WANGXiaoli31Gansu-ShaanxiGasTransmissionBranchofWest-EastGasTransmissionCompany,PipeChina2No.10OilProductionPlantofChangqingOilfieldCompany,CNPC3DaqingOilfieldDesignInstituteCo.,Ltd.Abstract:Girthweldofoilandgaspipelineisanimportantcomponentofthepipelinesystem.Inre-centyears,thequalityissueofpipelinegirthweldshasbecomeincreasinglyprominent.Inordertoen-surethesafe,stable,andefficientoperationofoilandgaspipelines,variousoilandgaspipelineman-agementunitshaveorganizedriskandqualityinspectionsofpipelinegirthwelds.However,thereareproblemsoflargeworkloadinpipelinegirthweldinspectionandtreatment,lowproportionofre-eval-uateddefectpoints,andlowinspectionefficiency.Inordertoimprovetheefficiencyofriskinspec-tion,thisstudytakeshistoricalgirthweldexcavationretestdataastheresearchobject,thefactorsaf-fectingthequalityofpipelinegirthweldsaresystematicallyanalyzed,takesimprovingtheaccuracyofdefectweldsexcavationastheassessmentindi...