BZ34-2EP-P1S井钻井液技术

22520059DRILLINGFLUID&COMPLETIONFLUIDVol.22No.5Sept12005:100125620(2005)0520068204BZ3422EP2P1S(,)BZ3422EP2P1SBZ34222P1,,100m3/d,,,,,,1.301.40,1.82.0,1.60g/cm3,PEMPF2PLUSJLXWLD,;,,;,,,PF2PLUSPF2JLX2CKClPF2TEXPF2WLD,BZ34222P1S,PEM,,PEM:TE254.3:A0BZ3420027,12,371.7104m3,10.6%,22.1%,,,,,BZ34222P1,BZ34222P17,,,215.9mm,,,PEM,,BZ34222P1S,140m3/d11.11.1.1,,,,1.1.2PEMPEMPF2PLUSJLXWLD,(1);,,;,,:,,1974,1997,:548#;300452;[phone];E2mail:[e-mail]©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1PEMPF2JLX%g/cm3AVmPasYPPaFLmLMf/%101.11268.187.50.229121.11244.6010.00.04580.35201.15228.178.60.229221.15174.096.80.09160.301.1.3PEM(1)(2)JLXJLX,,,JLX,,,,,,JLX,,,JLX,,JLX,,,(),(3)WLDWLD,WLD,,;WLD,,(4)PF2TEXPF2TEX,6,5(5)K+1.2BZ3422,1.30g/cm31.40g/cm3,1.45g/cm3,1.2.1,P5,11,,,1.301.40,,1.40;1.82.0,,3,;;,(1.60g/cm3()),:1;2;3;4;5;61BZ34222P51.2.2,1.0g/cm3,1.023g/cm3,,1.301.40g/cm3,69225:BZ3422EP2P1S©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1.82.0g/cm3,1.60g/cm3BZ34222P1S,,P5,,85%,,,1.2.3,,,,,,API,,K+,,,,,,1.3PEM,,J1.3.1(1),,,,,,,(2)BZ34222,3.9922.16m,12.86mQS22,14.77m,,4%QS22140EP23,,3%2BZ34222P1(3):QS22EP23,;,;,;20MPa,;,3.0cm,1.3.2J,,,1%PF2WD22.145s,PF2XC2H,12Pa,1.5mPEM,7m2.2215.9mm215.9mm1.32g/cm3PEM,5%PF2JLX2C8%KCl,PF2TEXPF2WLD,PF2SMPPF2TEMP,API4mL,15mL,API3mL,12mLPF2JLX2CKClPF2PLUS7020059©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.K+,KCl,K+30000mg/L,PF2TEXPF2LUBE,PF2BLAPF2XCPF2PAC2HV,,J,,,1.41g/cm3,1215m3/h,PF2DF215m3,1.43g/cm3,1%PF2LUBE0.5%PF2BLA,8m3,16m9m,5m,0.5%PF2DF21,1%PF2LUBE0.5%PF2BLA200m,3720.41m,215.9mm:1.321.43g/cm3,5162s,2541mPas,2136Pa,(45)/(614)Pa/Pa,API2.44.2mL,813mL,4050g/L2.3,12mL0.165mm(84),,25m4%PF2QS223%PF2EP23,3m1.5m/s,BZ3422EP2P1,3.9922.16m(34),0.125m,3()4()311,(1215m3/h)PF2DF21,PF2DF21,,21,1.401.41g/cm3,1.43g/cm33112mL,K+30000mg/L,,KCl9%[1]..:.,1999[2],,..,1993[3],,.(2005205201;HGF=055W5;)71225:BZ3422EP2P1S©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.bergerCo.andCPIdrillingteam.Thesenewtechnologies’characteristic,mechanismandfieldapplicationwerepresented.Also,severalholestabilitytechnologieswerepresentedwhichincludedtheholestabilitymodelbasedonthecoupleofthermodynamics,chemicalandmechanicaldevelopedbyAustraliaCSIROOilCorporation;designcriterionofwater2baseddrillingfluidforholecleaningandstabilityadvancedbySolvang/StatoilCompany.Theenvironmentalprotectiontechnologieswerepresentedbyreviewofcuttingsrelease.Andalso,theoffshorecuttingsshatteringtechnologyaccordingtotheOSPARreleasestandardandthewater2baseddrillingfluidrecycletechnologydevelopedbyStatoilASAforreducingthecostofdrillingandenvironmentalprotectioninNorthSeaareawerepresented.Keywords:drillingfluidtechnology,lostcirculationcontrol,plugging,holestability,environmentalpro2tection,overview.Firstauthorsaddress:CNPCEconomicandTechniqueInst.,Beijing.BZ3422EP2P1Sdrillingfluidtechnology.DFCF,2005,22(5):6871Authors:GENGTie,SUNDong2zheng,ZHANGrong,WANGWei.Abstract:InBZ3422field,theaccumulativeoilproductionhasbeen371.7104m3,recoverpercentofre2serveshasbeen10.6%,combinedwatercuthasbeen22.1%byJuly,2002.Therearemanydisadvantagesiftheoilfieldwillbeproducedcontinually.Inordertosolvetheseproblemsandimproveoiloutput,itwasdecidedtoputthewellstimulationintoeffectbydrillingsidetrackinginwellBZ34222P1whichexpecttoat2tain100m3/doutputafterstimulation.Inthearea,theformationwithlargerstructuralstressandhardlybrittlecoreeasilyoccurssloughing,themechanicfactoraffectingboreholestabilityisobvious,severesloughinghaseverhappenedinpreviousexplorationanddevelopment.Soitisdifficulttodrill,andtopro2tectthereservoirdrilledwithhighdensityfluid.PEMdrillingfluidhasbeenchosenonthebasisoflotsofearlystudiesandfluidadjusting.Thesystemisformulatedbyaddinglowmolecularweightpolyglycolsur2factant,JLX,hightemperatureresistinganti2sloughingagentmodifiedwhichstructureissimilartosili2cate,WLD,intoconventionalpolymerdrillingfluid,PF2PLUS.Itsinhibitivemechanismiscoordinatedactionofalladditivesinfluid.Duringdrilling,thedosageofPF2PLUSPF2JLX2CKClPF2TEXandPF2WLDmustbeenough.TheadjustmentwellBZ34222P1ShasbeenfinishedbyusingPEMdrillingfluid,shield2temporarypluggingandmembraneprotectingreservoirtechnology,anditgainedhigheroutputafteritssidetracking.Moreover,thispaperdiscussedthemechanismofthePEMdrillingfluid,analyzedthefactorsaffectingandcontrollingwellborestability,andprovidedsuggestionforfutureoperationinthisare2a.Keywords:drillingfluid;wellborestability;anti2sloughing;formationprotection;temporaryplugging;membranetechnology;environmentprotection.Firstauthorsaddress:DrillingFluidCompanyofOffshoreOilfieldServiceCo.Ltd.,CNOOC,Tanggu,Tianjin.Silicatebasedcationicdrillingfluidsystemforhorizontalwells.DFCF,2005,22(5):7274Authors:JINGZeng2xiu,ZHENGTaoandSUNXian2jun.Abstract:InouteredgeofDaqingoilfield,toexplorePutaohuareservoir,economicalwaterbaseddrillingfluidwhichcanreplaceoilbaseddrillingfluidisneeded.Therefore,asilicatebasedcationicdrillingfluidsystemforhorizontalwellswasdeveloped.Thisfluidsystemismainlycomposedofinhibitivecati