基于IOW的高含硫气田集输管网操作风险评估.docx

基于IOW的高含硫气田集输管网操作风险评估摘要：高含硫气田开发安全风险极大，确保其集输管网安全经济稳定运行具有重要意义。为此，利用完整性操作窗口(IOW)技术对其集输管网进行了操作风险分析，首先，把管网输入输出空间划分为正常操作、安全警戒、安全危险、灾难4个区域，并根据管道承受强度、天然气水合物生成温度、管道腐蚀影响等因素确定出了管道中天然气压力、温度、流速为输出区域敏感变量，集气站供气压力、供气温度、供气量为输入区域敏感变量；然后以相关标准规范、工程实践成果等来确定输出区域敏感变量不同输出区域的边界；最后，利用HYSYS软件建立集输系统的工艺模型，基于确定的输出区域变量边界，按管网输入输出区域的映射关系得到了输入区域变量的边界，从而可根据集输管网运行参数进行操作风险等级评估。结果表明：采用IOW技术能够对集输管网工艺状态进行危险等级划分，可为制定集输管网运行策略提供参考。关键词：高含硫气田集输管网操作风险IOW系统输入系统输出OperationriskassessmentbasedonIOWofflowandgatheringlinesinahigh-sulfurnaturalgasfieldAbstract：Toensurethesafe，steadyandcosteffectiveoperationofgatheringandflowlinesisofgreatsignificancetothepreventionofhighrisksinthedevelopmentofahighsulfurgasfield．Therefore，weappliedtheIOW(integrityoperatingwindow)teehnologytotheoperationriskassessmentinthissubject．First，alltheinvolvedinputandoutputspaceinthegatheringandflowlineswasdividedintonormaloperation，safetyalarm，safetyhazard，anddisasterproneareas．Then，accordingtothepipelinestrength，naturalgashydrateformationtemperatureandpipelinecorrosionfactors，thegaspressure，gastemperature，andgasflowrateinthelineswereidentifiedasthesensitivevariablesofoutputzones，whilethegaspressure，gastemperature，andgasflowvolumefromnaturalgasgatheringstationswereidentifiedasthesensitivevariablesofinputzones．Furthermore，inlightoftherelevantstandardsandspecifications，engineeringpractices，etc．，differentoutputzoneboundariesofsensitivevariableswereclassified．Finally，theprocessmodelofgatheringandflowlinesystemwasestablishedbyuseofHYSYSsoftware．Basedonthedeterminedoutputzoneboundaries，theinputzoneboundariesofthesensitivevariableswerealsodetermineduponthemappingbetweeninputandoutputzonesofthelinesystem．TheresultsshowedthattheIOWtechnologycanbeusedtoassesstherisklevels。fprocessstatusoflines，whichprovideshelpfulinformationfordevelopingappropriateoperationstrategiesofgatheringandflowlinesystemsinagasfield．Keywords：high-sulfurnaturalgasfield，gatheringandflowlinesystem，operationrisk，IOW，inputofsystem，outputofsystem随着经济发展对能源需求的不断增大，我国开始开发重庆、川东北等地的高含硫气藏。高含