Vol.42No.8Aug.2023石油化工应用PETROCHEMICALINDUSTRYAPPLICATION第42卷第8期2023年8月油气地质靖边油田郑寺区长21油层沉积微相研究马钰凯,李杰,宁波,肖鄂,程妮(延长油田股份有限公司勘探开发技术研究中心,陕西延安716000)摘要:靖边油田郑寺区主力产油层系为长21油层,当前的开发面临着区块高含水率井多、油井利用率低等诸多问题,因此,函需开展各小层沉积微相特征研究,为下一步措施挖潜、高含水率治理等治理措施提供依据。本文对郑寺区长21油层亚组各小层沉积微相类型及特征开展了研究工作。研究认为,研究区长21油层各小层沉积微相类型主要包括分流河道、分流间湾和天然堤,各类沉积微相具有不同发育特征。研究区长2油层各小层沉积微相平面展布具有一定的继承性但又存在一定的差异。在之后的开发过程中,应充分考虑各小层沉积微相特征差异,从而更加科学的进行综合治理工作。关键词:长21油层;沉积相标志;三角洲平原;沉积微相中图分类号:TE122.22D0I:10.3969/j.issn.1673-5285.2023.08.018文献标识码:A文章编号:1673-5285(2023)08-0077-05StudyonsedimentarymicrofaciesofChang21oilformationinZhengsiareaofJingbianoilfieldMAYukai,LIJie,NINGBo,XIAOE,CHENGNi(ResearchInstituteofExplorationandDevelopment,YanchangOilfieldCo.,Ltd.,Yan'anShaanxi716000,China)Abstract:Chang21oilformationisthemainoil-producingreservoirinZhengsiareaofJing-bianoilfield.Thecurrentdevelopmentisfacedwithmanyproblemssuchashighwaterwellsandlowutilizationrateofoilwells.Therefore,itisurgenttocarryoutresearchonsedimen-tarymicrofaciescharacteristics,soastoprovidebasisforfurthermeasuressuchaspotentialexploitationandhighwatercuttreatment.Inthispaper,thesedimentarymicrofaciestypesandcharacteristicsofeachsmalllayerofChang21oilformationinZhengsiareaarestudied.ItisconcludedthatthesedimentarymicrofaciestypesinChang2oilformationofthestudyareamainlyincludedistributarychannels,interdistributarybaysandnaturallevees,andall*收稿日期:2023-06-18作者简介:马钰凯(1995一),男,硕士,工程师,研究方向为油气田开发。E-mail:myk19950101@163.com78sedimentarymicrofacieshavedifferentdevelopmentalcharacteristics.TheplanardistributionofmicrofaciesinthesmalllayersofChang21oilformationinthestud...