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温控短路热洗清蜡装置在超低渗油井清防蜡中的应用.docx

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温控短路热洗清蜡装置在超低渗油井清防蜡中的应用 Abstract Theshort-circuitingheatwashingandwaxremovaldevicewithtemperaturecontrolapplicationinultra-lowpermeabilityoilwellcleaningtechnologyhasthecharacteristicsofhighefficiency,energysaving,andsafety.Thistechnologyusesaspecialheatingandinsulationdevicetomaintainthetemperatureofthecleaningliquid,whichissprayedbytheinstrument,thusdissolvingthewaxintheoilwelleffectively.Throughtheapplicationanalysisofthistechnology,itcanbeconcludedthattheshort-circuitingheatwashingandwaxremovaldevicewithtemperaturecontrolisaneffectiveandpracticaltechnologyforpreventingandcontrollingwaxdepositioninultra-lowpermeabilityoilwell. 1.Introduction Withthewidespreadapplicationofunconventionaloilandgasresourcessuchasshalegas,tightoil,andcoalbedmethane,ultra-lowpermeabilityoilwellshaveincreasinglybecomeamajorfrontierforoilandgasexplorationanddevelopment.However,duetothecomplexgeologicalconditions,thelowpermeability,andthenarrowpore-throatstructureoftherock,theproductionperformanceoftheseoilwellsisoftengreatlyaffectedbytheformationdamagecausedbywaxdepositionandblockage.Therefore,thepreventionandcontrolofwaxdepositionhavebecomeoneofthekeytechnologiesfortheefficientandstableproductionofultra-lowpermeabilityoilwells. Atpresent,themainmethodsforpreventingandcontrollingwaxdepositionincludechemicalinjection,mechanicalremoval,andthermalrecovery.However,eachmethodhasitsownadvantagesanddisadvantages,andthereisstillalackofeffectivetechnologythatcanbewidelyusedinultra-lowpermeabilityoilwellswithdifferentreservoirconditions.Inrecentyears,theshort-circuitingheatwashingandwaxremovaldevicewithtemperaturecontroltechnologyhasbeengraduallydevelopedandappliedinthepreventionandcontrolofwaxdepositioninultra-lowpermeabilityoilwells,whichhasachievedremarkableresults. 2.Workingprinciple Theshort-circuitingheatwashingandwaxremovaldevicewithtemperaturecontroltechnologyismainlycomposedofaheatingandinsulationdevice,atemperaturecontrolsystem,andaninstrumentthatcanspraythecleaningliquid.Theinstrumentca