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1、2014年2月大慶石油地質(zhì)與開發(fā)Feb．．2014PetroleumGeologyandOilfieldDevelopmentinDaqingV01．33No．1第33卷第1期DOI：10．3969／J．ISSN．1000—3754．2014．01．021長慶低滲透油田水平井機械堵水工藝王百呂億明甘慶明李大建朱洪征崔文昊(長慶油田油氣工藝研究院低滲透油氣田勘探開發(fā)國家工程實驗室，陜西西安710021)摘要：為解決長慶低滲透油田多段壓裂、注水開發(fā)水平井見水問題，結合水平井生產(chǎn)現(xiàn)狀，分析了水平井見水規(guī)律及見水特征，研發(fā)了可撈式機械橋塞、
2、水平井封隔器、橋式單流閥等配套關鍵工具，設計形成了水平井趾部、中部、跟部單段見水或多段見水的機械封堵工藝管柱，并成功應用于礦場。共實施8口井，有效率100％，累計增油2841t，累計降水2160m。，控水增油效果顯著。該機械堵水工藝為見水水平井有效治理提供了重要技術手段。關鍵詞：低滲透油藏；多段壓裂；注水開發(fā)；水平井見水；機械堵水；長慶油田中圖分類號：TE358．3文獻標識碼：A文章編號：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基金項目：長慶油田生產(chǎn)5000萬噸采油采氣關鍵技術研究(2012—1—4)。作者簡介：王百，男，1
