大庆石油地质与开发PetroleumGeology＆OilfieldDevelopmentinDaqing2023年4月第42卷第2期Apr.，2023Vol.42No.2DOI：10.19597/J.ISSN.1000-3754.202202009缝洞型油藏试井模型及其在顺北油田的应用杜娟（中国石化石油工程技术研究院，北京100101）摘要：塔里木盆地顺北油田为缝洞型油藏，裂缝、大尺度溶洞并存，流动机理复杂，常规试井模型无法进行解释。在分析地层渗流、溶洞流体波动、井筒管流耦合的流体流动特征基础上，建立了钻遇溶洞、未钻遇溶洞2种缝洞型油藏试井模型。研究结果表明：缝洞型油井的井底压力响应曲线上可识别出井储、过渡、溶洞1、地层裂缝、溶洞2等流动阶段，而顺北地区油井多洞参与流动的特征较多，主要表现为有明显双洞特征和无明显双洞特征2种曲线类型；通过模型参数反演能够得到溶洞体积、溶洞距离、缝洞体积等参数。对顺北油田1口油井进行分析表明，新模型与实测曲线拟合精度高，拟合率达85%以上，计算的地层参数能够满足工程精度，且符合油藏地质特征。研究成果可用于缝洞型油藏试井资料解释。关键词：缝洞型油藏；裂缝；溶洞；试井模型；试井解释；顺北油田中图分类号：TE353文献标识码：A文章编号：1000-3754（2023）02-0077-09Applicationofwelltestingmodelinfractured⁃vuggyreservoirinShunbeiOilfieldDUJuan（SinopecResearchInstituteofPetroleumEngineering，Beijing100101，China）Abstract：ShunbeiOilfieldinTarimBasinisfractured-vuggyreservoirwithfracturesandlarge-scalevugscoexist⁃ingandcomplexflowmechanism，andcannotbeexplainedbyconventionalwelltestingmodels.Basedonanalysisoffluidflowcharacteristicscoupledwithformationflow，vugfluidfluctuationandwellboretubularflow，2welltest⁃ingmodelsfordrilledandundrilledfractured-vuggyreservoirsareestablished.Thestudyshowsthattheflowstagesofwellborestorage，transition,vug1，formationfractureandvug2areidentifiedonbottomholepressureresponsecurveoffractured-vuggytypeproducers.ThereareseveralcharacteristicsofmultiplevugsinvolvedintheflowofproducersinShunbeiarea，mainlyappearas2typesofcurveswithobviousdoublevugcharacteristicsandwithoutobviousdoublevugcharacteristics.Vugvolume，VugdistanceandFracturecavityvolumeparameterscanbeob⁃tainedbyinversionofmodelparameters.AnalysisofawellinShunbeiOilfiel...
