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1、Articlepubs.acs.org/EFEffectofTemperatureonTwo-PhaseRelativePermeabilitiesofHeavyOil,Water,CarbonDioxide,andMethaneDeterminedbyDisplacementTechniqueManoochehrAkhlaghinia,FarshidTorabi,*andChristineW.ChanFacultyofEngineering,UniversityofRegina,Regina,Saskatche
2、wan,CanadaS4S0A2ABSTRACT:Twocorefloodsetupswereusedtomeasureheavyoil−water,heavyoil−carbondioxide,andheavyoil−methanerelativepermeabilities.Usingfractionaleffluentsmeasuredwithprecisionmetersanddifferentialpressuredatarecords,theJohnson−Bossler−Naumanntechniquew
3、asappliedtocalculatetwo-phaserelativepermeabilityinaconsolidatedsandstonecore.Inordertoinvestigatetheeffectoftemperatureontheshapeofrelativepermeabilitycurves,aseriesofcorefloodtestswasconductedatthreedifferenttemperatures(28,40,and52°C)foreachfluidpair.Analysis
4、ofthedataobtainedfortheheavyoil−watersystemshowedalinearincreaseofabout65%and50%inwaterrelativepermeabilitieswhentemperaturerangedfrom28to40°Cand40to52°C,respectively.However,althoughtheoilrelativepermeabilitycurveshowedanincreaseofabout70%whentemperatureinc
5、reasedfrom28to40°C,itwasdramaticallydecreasedbyabout30%whentemperaturewasincreasedfrom40to52°C.Inthecaseofheavyoil−gasadifferenteffectwasobservedformethaneandcarbondioxide.Althoughbothmethaneandcarbondioxiderelativepermeabilitiesincreasednonlinearlyathighertem
6、peratures,oilrelativepermeabilityinthepresenceofcarbondioxidedecreasedwhentemperatureincreased.Incontrast,inthepresenceofmethane,oilrelativepermeabilityexperiencedareductionof80%from28to40°Cfollowedbyaconsiderableincreaseof15-foldfrom40to52°C.1.INTRODUCTIONr
7、elativepermeabilityratioincreasesinconsolidatedsandswithlowresidualoilsaturation.ItalsosupportstheresultsobtainedAlthoughanoverviewontheliterature,Table1,suggeststhat6byHabowski,wherehefoundadecreaseinthewatertooilrelativepermeabilityisafunctionoftemperature
8、aswellassaturation,thereisstillnounanimousagreementonhowrelativepermeabilityratioinconsolidatedsandsathighertemperaturemayinfluencerelativepermeabilitycurves.Inspiteresidualoilsaturations.ofsuchc
