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1、2010年第39卷石油矿场机械第10期第82页OILFIELDEQUIPMENT2010,39(10):82～87文章编号:100123482(2010)1020082206海上油田同井注采技术开发与应用程心平,刘敏,罗昌华,张成富,姚智翔,代向辉(中海油能源发展股份有限公司采油技术服务公司,天津300452)①摘要:针对海上油田开发生产中出现的油田注水水源不足,采油井多层系开发调整要求分层段、分阶段转注及采油井伴生气回注等技术问题,开发了同井采注工艺技术。将有水层注水井的水层打开提供水源,同时保持原注水井正常注水,与平行双管相比,单管大排量同井
2、采水注水技术使同井33采水量从800m/d提高到2500m/d;对不同目标层位可分别进行采出或注入,即同井采油注气或同井采油注水,相当于把原来的1口井变成2口井使用,提高了单井利用率,实现了一定范围的井网优化。该技术在渤海湾SZ3621、JZ923、LD1021等油田成功应用8口井,已成为老油田稳产增产的重要技术手段,为新开发油田生产完井开辟了一个新的完井模式。关键词:同井注采;一井多用;海上油田中图分类号:TE934文献标识码:BDevelopmentandApplicationofSingleWellIntegralInjection/Pro
3、ductionTechniqueCHENGXin2ping,LIUMin,LUOChang2hua,ZHANGCheng2fu,YAOZhi2xiang,DAIXiang2hui(OilTechnicalServicesCompany,EnergyDevelopmentLimitedCompanyofCNOOC,Tianjin300452,China)Abstract:Thetechnique,referringtothechallengesposedbytheshortageoffloodingsources,re2quirementsofzo
4、nalrecovery,convertedinjectionandassociatedgasrecyclingformultiple2zoneproduction,wassuccessfullydeveloped.Referringtothechallengesposedbytheshortageoffloodingsources,requirementsofzonalrecovery,convertedinjectionandassociatedgasrecyclingformultiple2zoneproduction,thetechniqu
5、ewassuccessfullydevelopedaswell.Tosupplythefloodingsource,thewaterlayerwasdrilledwhilethenormalinjectionwasmaintainedintheinjec23tionwells.Comparedwiththeparalleldual2pipe,thewaterproductionwasenhancedfrom800m/3dto2,500m/d.Basedonfeaturesofgeologicalcharacteristicsandrecovery
6、requirements,con2currentinjectionandproductionforthedifferentlayersinasinglewellwasobtained(gasinjec2tion/oilproduction,waterinjection/oilproduction).Thetechniquemakestheactionofasinglewellworkingasthatoftwosothattheper2wellefficiencyisraisedandthewell2netoptimizationismanage
7、dincertainarea.Thetechniquehasbeensuccessfullyappliedin8wellssuchas:SZ3621,JZ923andLD1021atBohaiBay,andreceivedobviouseconomicbenefits.Thetechniquehasbe2comeanimportanttechnicalmeasureofEORforoldoilfields,andcreatedanewcompletionmodeforproductioncompletionofnewoilfields.Keywo
8、rds:injectionandproductioninsamewell;multi2useinonewell;offshoreoilf
