长庆低渗透油田水平井机械堵水工艺-论文.pdf

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1、2014年2月大庆石油地质与开发Feb．．2014PetroleumGeologyandOilfieldDevelopmentinDaqingV01．33No．1第33卷第1期DOI：10．3969／J．ISSN．1000—3754．2014．01．021长庆低渗透油田水平井机械堵水工艺王百吕亿明甘庆明李大建朱洪征崔文昊(长庆油田油气工艺研究院低渗透油气田勘探开发国家工程实验室，陕西西安710021)摘要：为解决长庆低渗透油田多段压裂、注水开发水平井见水问题，结合水平井生产现状，分析了水平井见水规律及见水特征，研发了可捞式机械桥塞、

2、水平井封隔器、桥式单流阀等配套关键工具，设计形成了水平井趾部、中部、跟部单段见水或多段见水的机械封堵工艺管柱，并成功应用于矿场。共实施8口井，有效率100％，累计增油2841t，累计降水2160m。，控水增油效果显著。该机械堵水工艺为见水水平井有效治理提供了重要技术手段。关键词：低渗透油藏；多段压裂；注水开发；水平井见水；机械堵水；长庆油田中图分类号：TE358．3文献标识码：A文章编号：1000-3754(2014)01—0111—05MCHANICAL、VATERPLUGGINGTECHNoLoGYOFTHEHoIUZoNTAL

3、WELLSINCHANGQINGLoW—PERMEABILITYoILFIELDWANGBai，L0Yiming。GANQingming，LIDajian，ZHUHongzheng。CUIWenhao(Oil&GasTechnologyResearchInstituteChangqingOilfieldCompany，NationalEngineeringLaboratoryofExplorationandDevelopmentofLow-permeabilityOilandGasField-Xi’an710021，China)Ab

4、stract：Inordertosolvethebreakthroughproblemsofthemulti—stagefracturedandwaterfloodedhorizontalwellsinthelow—permeabilityoilreservoirsofChangqingOilfield，combiningwiththecurrentproductionperform—ancesofthewells，thebreakthroughlawsandcharacteristicsofthewellsareanalyzeda

5、ndmoreoverasetofkeytoolsofretrievablemechanicalbridgeplug，horizontalwellpacker，bridge—typecheckvalvekeyandothermatchingequipmentsaredeveloped，thestringsofthemechanicalwaterpluggingtechnologiesaredesignedandmadefortheindividual—interval(toe，mediumandhee1)andmulti—interv

6、albreakthroughsofthehorizontalwellsandfurthermoretheyaresuccessfullyappliedinthefield．Thetechniquesareoperatedin8wellsandtheeffectiveratereaches100％，thecumulativeoilincreasedisupto2841t，thecumulativewaterreducedis2160m。，itisobvioustoseethattheeffectsofwatercontrolandoi

7、lstimulationaregreat．Thismechanicalwaterpluggingtechnologyhasprovid-edsignificanttechnicalmeansfortheeffectivemanagementofthebreakthroughhorizontalwells．Keywords：low-permeabilityoilreservoir；multi—stagefracturing；waterinjectiondevelopment；horizontalwellbreakthrough；mec

8、hanicalwaterplugging；ChangqingOilfield收稿日期：2013-02—31改回日期：2013—05-10基金项目：长庆油田生产5000万吨采油采气关键技术研究(2012—1—4)。作者简介：王百，男，1