阿根廷稠油技术PPT课件

.,1,阿根廷项目稠油开发技术,北京温菲尔德石油技术开发有限公司2012年1月,.,2,目录一、基本情况二、存在的问题三、推介技术（一）井筒降粘开采技术（二）油层化学降粘技术,.,3,一、基本情况,AnalyzeadownholesolutionforHighViscosityfluidsEnsurethecontinuousproductioninPiedraClavadaandSurPiedraClavadafields.ReducetheFailureIndex.Testtheavailabletechnology,.,4,CerroGrandeBlockislocatedinPiedraClavadaField.Thisareahasfluidswithhighviscosityoil,paraffinandasphaltens.Theaveragedepthis2000meters.SurPiedraClavadaFieldinoneofthemostimportantareasunderdevelopmentinOxyArgentina.ThereissectorofSPCwheretheoilcharacteristicsshowhighviscosity(SPC-1087area).Theaveragedepthis1500meters.ThewellsinSPC1087areahavenoorlowproductionsincethecompletion.Itproducealackofreservesandstopthedevelopmentinthatdirection.ThisfluidcharacteristicproducesahighFailureIndex,increasingproductioncostsandproductionlosses.,一、基本情况,.,5,一、基本情况,OilCharacteristicsinPCarea,.,6,一、基本情况,OilCharacteristicsinPCarea,.,7,一、基本情况,OilCharacteristicsinSPCarea,.,8,OilCharacteristicsinSPCarea,一、基本情况,.,9,OilCharacteristicsinSPC1087area,一、基本情况,.,10,Thereisahighrateofproductionlossesassociatedtothefluidconditions.Reducedflowrates;Lostproductionhours(down-time);HighoperatingcostsHighworkover/pullingcostsThefluidsflowfromthereservoirtothewellbore.Therearesomeproblemstoextractthefluidsfromthewell.Anauxiliarymethodologyisnecessarytohelpfluidlifting.,二、ProblemsConclusions,.,11,（一）井筒降粘开采技术根据实验室加热降粘情况，大于50时粘度小于500mPa*S的油井采用电加热、井筒加药降粘、磁降粘等处理井筒粘度的技术生产。（二）油层化学降粘技术大于50时粘度大于500mPa*S的油井，采用化学吞吐降粘、化学降粘驱油技术生产。,三、Techniquesintroduction,.,12,（一）井筒降粘开采技术1.HollowRodElectricHeatingTechnology,三、Techniquesintroduction,Structure,Theintermediatefrequencyelectricalheatingsystemconsistsoffourparts:Theintermediatefrequencypower；HollowrodSpecialheatingcablePumpforheavyoil,.,13,（一）井筒降粘开采技术,1.HollowRodElectricHeatingTechnology,.,14,CableWinchWithSoftCable,1.HollowRodElectricHeatingTechnology,（一）井筒降粘开采技术,.,15,Theheatingcurrentgeneratesskineffectintheinnerwallofhollowrodwhenthesinglephasecurrentpassesheatingcableandhollowrod;thecurrentgathersintheinnerwall,theouterwallofhollowrodareuncharged,Principle,Heavyoil,1.HollowRodElectricHeatingTechnology,（一）井筒降粘开采技术,.,16,TheFeatureofHeatingSoftCable,CableOD:16.5mmTemperatureresistance:205Servicelife:2yearsTotaltensionresistanceat1000m20KN.,HollowRodTechnicalParameters,Parameters,1.HollowRodElectricHeatingTechnology,（一）井筒降粘开采技术,.,17,Application,TakeCOPAL-7forexample,itislocatedinMexico,belongingtoPEMEX.Duetoheavyoil,inmostcases,COPAL-7hadbeenshutin.AfterimplementingEHT,notonlycanitproducesmoothly,buttheproductionalsodramaticallyincreasedfrom8tto29t.,1.HollowRodElectricHeatingTechnology,（一）井筒降粘开采技术,.,18,Application,EHShasbeenappliedinmorethan1700wellsathomeandabroad,suchasKazakhstan,Russia,Mexico,Syria,etc.Itincreasestheoiltemperatureefficiently,andimprovefluidityandsolveliftingproblem.,1.HollowRodElectricHeatingTechnology,（一）井筒降粘开采技术,.,19,PrincipleWastewaterwhichhadbeentreatedbepumpedthroughsurfacepipetowellhead,thenflowintothehollowrodthroughacheckvalveandinjectintothetubingupthepump,mixturewithcrudeoilpumpedtoformtheemulsionoilinwater,theproblemsofviscousoilwellswithhighbackpressurecanbesolvedduetolargeamountofmixedfluid.,2.ViscosityBreakByPhysicalandChemicalMixedWaterbyHollowRod,（一）井筒降粘开采技术,.,20,Water-blendedsystemequipmenthollowroddownholecheckvalvehighpressurehose,Systemtechnologyrequests:Wellheadpressure：3-4Mpa；temperature：60-90；volume：makethewatercutofwellfluidmorethan80%,Hollowwater-blenderprocess,2.ViscosityBreakbyPhysicalandChemicalMixedWaterbyHollowRod,Systemstructure,（一）井筒降粘开采技术,.,21,ProcessPrinciple:Usingthelipophilicforcesofself-diffusionviscosityreducersystem,diffuseintotheoilphasethroughtheoil-waterinterfacetoreducethenumberofheavyoilmoleculestogether,sothattheactingforcebetweentheheavyoilmoleculesweaken,thusreducingtheviscosityofheavyoilandimprovethemobilityofheavyoil,toachievereservoirviscosityreductionpurposes.,Principlesketchmap,2.ViscosityBreakByPhysicalandChemicalSelf-diffusionViscosityReducer,（一）井筒降粘开采技术,.,22,temperature160；Salinityaqueous2.2105mg/l；whenthesystemvolumeis400mg/l800mg/l时，viscosityreduction97；,2.Viscositybreakbyphysicalandchemicalself-diffusionviscosityreducer,（一）井筒降粘开采技术,.,23,Itcanbeusedforwellsgroupviscosityreductionbycentralizeddistributionandmetering,achievingtheoverallsystemmanagement.,2.ViscosityBreakByPhysicalandChemicalSelf-diffusionViscosityReducer,（一）井筒降粘开采技术,.,24,高效防蜡防垢设备工作示意图,Theapparatus,connectedwithalternativecurrent,wouldgeneratechangingelectromagneticfield.Throughthemagneticconductivityofthetubing,electromagneticfieldwouldcoveralltheliquidintubing.Waxmolecules，affectedbyelectromagneticfield,arepolarized,thenthewaxcrystalswouldbecomesmaller,andtheadhesiveforcebetweenmoleculeswouldreduce.Themoleculararrangementwouldchangefromdisordertoorder,whichcouldrestrainwax-crystalgatheringandreducetheliquidviscosity,andimproveliquidity.,Principle,3.ElectromagneticParaffinControl,（一）井筒降粘开采技术,.,25,OilWellWaxScaleControlUnitSpecifications,Parameters,3.ElectromagneticParaffinControl,（一）井筒降粘开采技术,.,26,Heavyoilandthephysicalpropertiesofoilarepoor.Pumpingunittemporarilysuspending,stuckpumpoftenoccurswhenstartingagain;Theviscosityandwaxcontentareveryhigh.Waxdepositandscalingareseriousinwellbore,andwell-flushingcycleisshort;Theindividualwellproducingrateislow,andswabbingparametersaresmaller.Afterflushing,itwouldtakealongtimeforperiodofrecoveryproduction,andwouldseriouslydamagetheoilformation;Duetodeadoilandwax,itsdifficulttotestliquidsurfacewave.,Applicablescope,3.ElectromagneticParaffinControl,（一）井筒降粘开采技术,.,27,TakeN1-3-175andE22-21,locatedinDaqingOilfield,forexample,bothofthemcontainhighwax,andwell-flushingperiodareboth30days,andoftencouldnottestliquidsurfacewaveduetoheavyoil,.Duringtemmonths,N1-3-175occurred4timesstuckpump,andE22-21occurred3timesstuckpump.,Application,3.ElectromagneticParaffinControl,（一）井筒降粘开采技术,.,28,Throughusingtheapparatus,thewell-flushingperiodofthewellshadbeenextendedfrom30daysto334daysand210daysrespectively.Theliquidsurfacewavecouldbetestednormally,andeffectivelyreduceviscosity,andproductionoperationrunproperly.,Application,3.ElectromagneticParaffinControl,（一）井筒降粘开采技术,.,29,高效防蜡防垢设备工作示意图,Theamountofelectricityisabout8kw.h/d.Itishighcost-effectiveforwellswithheavywax.,Experience,3.ElectromagneticParaffinControl,（一）井筒降粘开采技术,.,30,（二）油层化学降粘技术大于50时粘度大于500mPa*S的油井，采用化学降粘吞吐、化学降粘驱油技术生产。,三、Techniquesintroduction,.,31,（二）油层化学降粘技术,1、水溶性自扩散体系性能,体系浓度对降粘效果的影响（50）,体系浓度为400mg/L时，可使粘度为928074240mPas的不同区块原油降至为176290mPas。,.,32,（二）油层化学降粘技术,矿化度对体系降粘效果的影响（50）,矿化度对体系降粘效果没有影响,.,33,（二）油层化学降粘技术,体系浓度对稠油粘度的影响(mPas),（气油比23.8、油水比4/6）,体系可以大幅度降低稠油粘度，体系用量400mg/L时，在油藏条件下降粘率为6070%。,.,34,（二）油层化学降粘技术,温度对粘度的