高含盐油田掺水工艺

2010052420101031CNPC－“438b”KJ20080907－11970－1994。1006－6535201102－0117－0312131.1000832.1000343.100007、、、、、、、、。。。TE358A11.11－23－5。。、、。1.2、、、。1.2.134mm++++。=+。1.2.2。。。。。1.2.3。660°6。1.2.489mm++++62mm+。Y211。。11818。。62mm。。6－9。1.310、、、、。、、、。3～7d。。。。。1.3.1。11－12。1.3.21。Qc=Co1/Co2－1Qo+Cw1/Cw2－1Qw1Qcm3/dQwm3/dQom3/dCw1g/m3Cw2g/m3Co1g/m3Co2g/m3。。2。V=πR2－r2h2Vm3Rmrmhm。2OUEDMYA。、290～380g/L。。1975200820151173.3%55%。2%～5%。5m。。。HE－A－313646.2～3836.9m。70m3/d1.6%380m180m3/m3。。NaCl89%BaSO45%SiO25%CaCO31%。380g/LCaCl2。。200921020m62mm2600m。63m3/d2%1.5m3/d1320%50m3。EH012006122138m3/d2.5%120m3/m3。64d。200931227m62mm3100m。34m3/d1.4%2m3/d1220%55m3。2119201045。20%1。1/m3/d/m3/d/d/m3/d/m3/dHE－A－320090258.5632%1.5m311320%50m3EH01200903373810d16431.4341.4%2m31220%55m3EH022009031061143d50kg、5d1121117.01272%5m31420%70m3KZ120090490.4961.5%3m340d1220%80m3KG62009031131323d70kg、5d195115.01375%4m31220%100m331。2。3、、、。4、。5、。6。1BoussaMBencherifDHamzaSKhodjaM.ProductionoptimizationofoilwellstheproblemofsaltdepositsJ.JournalofCanadianPetroleumTechnology200644516－21.2.J.200512381－83.3.J.20029573－76.4.J.200813261－64.5.、、J.2001113190－194.6.M.2004268－341.7.J.200218712－13.8.J.2003311165－69.9.M.199885－87.10.M.1995182－194.11AliSAKalfayanLJ.MatrixtreatmentarrestsproductiondeclineindeepwaterGOMwellJ.WorldOil20032241178－81.12.J.200616798－101.voirdevelopment．Theconventionalmethodusesalargeamountofcorestakeslongertimeandisnotapplicabletoproduction．Basedonfullanalysisofthemechanismandinfluencingfactorsofwaterlockamodelofinformationfusionisbuiltupbyusingthree－layerfeedforwardneuralnetworksystemwith11influencingfactorsofwaterlockincludingporosityasinputnodestoidentifydi-agnoseevaluateandpredictwaterlockingasreservoirs．Meanwhilerelatedsoftwarehasbeendeveloped．Thismethodcanfastpredictthedegreeofwaterlockinagasreservoirandthepredictionresulthighlycoincideswiththemeasuredresult．KeywordsformationdamagewaterlockeffectsimulationneuralnetworkinformationfusiondiagnosisandpredictionPilottestofnitrogenfloodingtoimproveoilrecoveryfromthicklowpermeabilityreservoirsintheDaluhuoilfieldDONGPing－zhiShengliOilfieldCompanySINOPECZiboShandong256303ChinaAbstractMostofthelowpermeabilityreservoirsintheShenglioilfieldhaveenteredthemiddleorlatelifeofwaterfloodingtheproductioneffectisgettingworseanditisurgenttoconvertdevelopmentscheme．Basedonfinelaboratorystudyapilottestofni-trogenfloodinghasbeenconductedforthicklowpermeabilityreservoirswiththeFan29blockintheDaluhuoilfieldastestarea．Theadvantagesofnitrogenareeasyaccesslowdensitygoodcompressibilityandsmallcorrosionetc．Itisconcludedthroughtestprogramoptimizationfieldoperationandin－depthanalysisthatnitrogenfloodingcanbetterimprovethedevelopmentresultofthicklowpermeabilityreservoirsandisworthspreading．KeywordsthicklowpermeabilityreservoirnitrogenfloodingrecoveryfactorpilottestDaluhuOilfieldResearchonreducingfracturingfluidlossinfissuredformationQUZhan－qingYUEYan－ruLUOMing－liangWENQing－zhiLUHuiChinaUniversityofPetroleumDongyingShandong257061ChinaAbstractThispaperinvestigatesthemechanismoffracturingfluidlossinfissuredreservoirsanalyzesrelevantsensitivitiesanddeterminesamethodoffluidlosscontrolbyaddingsiltintoprepadfluid．Parametersareoptimizedtoreducefluidlossincludingprepadfluidvolumesiltdosagesiltconcentrationsiltgrainsizedisplacementandfracturingfluidviscosity．WellST70wastakenasanexampletooptimizeoperationparametersandcomparefluidlossandfiltrationvelocitybeforeandafteraddingsilt．Theresultshowsevidentreductioninfluidlossandfiltrationvelocitythusverifiedtheeffectivenessoffluidlosscontrolbyaddingsilt．Thisresearchishelpfultoimprovingthesuccessratiooffracturingoperationsinfissuredreservoirs．KeywordsnaturalfracturefluidlosssiltsandfracturingoptimizationPreliminaryapplicationofconventionalPCPliftingtechnologyinthermalrecoverywellsZHANGXiao－bo12XUJian－min2LIUMo－ran2GAOJian2WANGJian31．ChinaUniversityofPetroleumBeijing102249China2．GreatWallDrillingCompanyPetroChinaBeijing100011China3．LiaoheOilfieldCompanyPetroChinaPanjinLiaoning124010ChinaAbstractProgressivecavitypumpPCPasamechanicalliftingtechnologyhasadvantagesofsavingenergylessinvestmentandeasymanagementetc．butislimitedbytemperatureresistanceofrubberstatorandnotsuitableforcyclicsteamstimulationwellswithhighbottomholetemperature．Experimentalstudyhasbeencarriedoutforthetemperatureresistancepropertyofnormaltemper-aturePCP．InWellFNE38oftheBlock6ofSudanPCPfromPCMwasusedstraightaftersteaminjectionandhadachievedinitialsuccess．ThetesthasprovedthatconventionalPCPscanbeappliedinCSSwellsbycontrollingtemperatureespeciallyinsand－proneblockstoeliminatesandcontrolmeasuressavesandcontrolexpensesandmaximizeoilwellproductivity．TheapplicationofconventionalPCPsinhightemperatureheavyoilwellshasbroadenedthescopeofitsapplication．KeywordsconventionalPCPcyclicsteamstimulationhightemperaturewellapplicationWellFNE38SupportingtechniquesofdevelopingdeepsuperheavyoilintheCheng91blockZHUANGDongQINYan－caiZHAODe－linLIDa－weiCHENGYong－hongShengliOilfieldCompanySINOPECDongyingShandong257200ChinaAbstractThispaperexploressupportingte