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:1000-7393(2007)04-0092-033(,163358):,,,,,,:10h;1070;pH211,pH2,pH11;Ca2+Mg2+,:GIF,,,15d,:;;;:TE254.6:A,,,,,,,,,,,,,GIF11.1,,100m,,,(1.0g/cm3),,,,1.2,,:(1),5070s,(2),,,,1.01.05g/cm3(3),(4),,15d(5),2GIF2.1,,,5070s,DXF294Vol.29No.420078OILDRILLING&PRODUCTIONTECHNOLOGYAug.20073:,19651986,:0459-4196298,E-mail:fantingxiu@163.com©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:20,0.7%,10h,113.2,,Ca2+Mg2+,(1):,,1070,(30min)80,22(2)GIF,,pHpH,:GIFpH211,pH2,pH11(3)Ca2+Mg2+Ca2+Mg2+:GIFCa2+Mg2+,,3.3,,,11/%//rmin-160030010063/mPas/Pa1.303048321621.216.00.082504630152116.00.0711.40305238.5202.51.513.50.1285050.534172116.50.0891.5030604523.53220.00.128505840202.581.518.00.112:GIF,GIF39:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(0.7%DXF+0.7%DXT)GIF,G,GIF,242GGIF/rmin-160030010063/mPas/Pa100013991641710480.2209551087245148360.1847525865735116290.143505064452484190.133257554382053160.11259544301732140.08201003725121.51120.0663GIF/rmin-160030010063/mPas/Pa100055341732210.06695555361932190.087752556382043180.102505057392153180.107257552362154160.10259545311632140.087010038251221130.0614GIF/h/gcm-3/gcm-32575241.101.10481.101.103601.101.105050241.201.20481.201.203601.201.207525241.281.28481.281.283601.271.2934,2,,,,15d,,,4,GIF14,15d,4.1GIF,DXTDXF0.7%DXTDXF,10h4.2:DXTDXF=1000.70.7,1.01g/cm3,:52s,13.5mPas,0.061Pa4.3,GIF5.5m3,(18MPa),,,,(21MPa),5(1)GIF,,(2)GIF,Ca2+Mg2+(3)GIF,,(4),GIF,:[1],,.[M].:,2001.[2].[M].:,1983.[3].[M].:,1990.(2007-01-08)4920078(29)4©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(4):89291Abstract:Alloilandgasfieldspayattentiontohowtosolvetheproblemofleakageofoilandgaswells.Theconventionalcementslurryofcementingdoesnothavethefunctionofsealing.However,anetstructureiseasilytobeformedintheleakagepassage2wayduetothefunctionofthefiberaccumulationandbridgingafteraddinginertiafiberintotheconventionalcementslurryofcementing.Theconventionalperform2anceofthecementslurrydoesnotchangealot.Therefore,thefibercementslurrycanblocktheleak2ageeffectivelyduringdrillingandcementing.Inaddi2tion,thelimestonetenacitycanbeenhancedafterbe2ingaddedthefiber,whichguaranteestheperforatingjobtocarryonwell.Thisarticledevelopsatypeoffi2bercementslurrysystemofsealingbasedonchangingthevolumeandthelengthofthefiber.Byapplyingthestaticsimulationinstrumentforpluggingcement,alabsimulationsealingtestisconductedontheporousleak2agewithitsborediameterbeing1mm,2mm,and4mmrespectivelyandonthefracturedleakagewithitsfractureradiusbeing1mmand2mm.Theresultshowsthatthefibercementslurrysystemexertsfavorableeffectonsealingtheformationsofporousleakageandfracturedleakage.Ithasbroadprospectasakindofsealingagentofexcellentperformance.Keywords:fibercementslurry;plugging;por2ousleakage;fracturedleakageYUTing2ting,PetroleumEngineeringInstitute,SouthwestPetroleumUniversity,Chengdu610500,Si2chuan,ChinaResearchoninnersuspensionanditsapplicationtoGIFce2menting.FANTing2xiu,ZHENGQi2ming,JIAFu2shan,JIANGKai2wen.ODPT,2007,29(4):92294Abstract:Inordertotackletheproblemsthattheloggingtoolisstuckinlateloggingandthepressuredifferencecausedbythedisplacementofdrillingfluidbybalancedcleanwater,bullheadingofcertaina2mountofinnersuspensioniscarriedoutwithoutaffect2ingwellcementingoperationprocedures,whichhelpspreventprecipitationofsolidparticlesandavoidfalsecementplugging.Thispaperintroducestheconstruc2tiontechnologyofsuspensionandselectsthemostsuit2ablesuspensionagentsandregulatorsonthebasisofa2nalysisandexperiments.Throughlaboratoryexperi2ments,thehydrationtimeofsuspensionisashighas10hours.What’smore,theviscosityofsuspensionislowwhenthetemperatureisbetween10and70,theperformanceofsuspensionisstablewhenthepHisrangingfrom2to11,solidparticleswillbeprecipita2tedfromthesuspensionwhenthepHislowerthan2,andtheviscosityofsolutiondecreaseswhenthepHishigherthan11.NoprecipitateswillbeseparatedfromsuspensioninCa2+,Mg2+,andsodiumchloridesalts.FieldtestshowsthattheinnersuspensionofGIFce2mentinghasexcellentsuspensionperformanceandcanfulfillthetechnicalrequirementsofcementingcon2struction.Inaddition,itsolvestheproblemthattheloggingtoolisstuckinlateloggingcausedbythere2placementofcementslurrybydrillingfluidandcanbewidelyusedinpractice.Keywords:adjustmentwell;drillingfluid;sus2pension;cementingFANTing2xiu,DrillingProductionTechnologyServiceCompanyofDaqingPetroleumAdministrativeBureau,Daqing163358,Heilongjiang,ChinaExperimentalresearchoncementmixedwithflyashreac2tiveactivator.JIADa2lei,GUOXiao2yang,LIZao2yuan.ODPT,2007,29(4):95296Abstract:Flyashcanbeusedtoimprovetheperformanceofcement,especiallytoeffe