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1、3rdInternationalWorkshoponRockPhysicsthth13–17April2015Perth,WesternAustraliaJointMeasurementsofStaticandDynamicYoung’sModuli:TheMethodsandPreliminaryResultsaabaaHongCao,ZhifangYang,De-huaHan,XinfeiYanandMinghuiLu.aRIPED,PetroChina;20XueyuanRd.,Beijing,China;caoho@petrochina.c
2、om.cnbUniversityofHouston;dhan@uh.edu.SummaryBasedonthelowfrequencysystem,wedevelopedanewtriaxialapparatustoachievethejointmeasurementsofstaticanddynamicYoung’smoduli.Thestaticandlowfrequencydynamicmodulicanbesimultaneouslyobtainedbythestress-strainmethod.Aluminiumsamplesweret
3、estedtoverifythefeasibilityandreliabilityoftheinstruments.Andwealsocarriedoutthemeasurementsofdryandpartialsaturatedsamples,andpreliminaryresultsshowthatlithologyandporefluidsaffectdynamicandstaticdifferencesignificantly.IntroductionStaticrockpropertiesareessentialtooilandgasp
4、roduction,wellconditionevaluationandhydraulicfracturing.Dynamicpropertiescanprovideveryimportantcluestoreservoirqualityandfluidsdetection.However,wearealwaysfacingnumerousdynamicdata,likeseismic,wellloggingandultrasonicdata,whichcannotbeuseddirectlyforstaticrockpropertycomputi
5、ngbecauseofdifferentscalesandmeasurementconditions.Experimentalmethodsarethemostimportantwaytoinvestigatetherelationsbetweendynamicandstaticmoduli,anddiscoverthosemaincausestodynamicandstaticdifferences(D/S).Suchworkwasdiscussedinseveralpaperswithultrasonicandstaticmeasurement
6、sofsandstoneandlimestone,andreachtobasicunderstandingthatdynamicmodulusishigherthanstaticone,andlithothogycontrolstheD/S(Jizbaetal.,1990;Olsenetal.,2006,2008;Fjær,2009;BakhorjiandSchmitt,2009;Alametal.,2012;AsefandNajibi,2013).Inpreviouswork,dynamicmoduliwerefromultrasonicdata
7、,andlowfrequencymeasurementsalmostneverbeenmentioned,althoughsignificantprogressesinthisfieldbeenachievedinrecentyears(Batzleetal.,2006;Madonnaetal.,2010;Mikhaltsevitchetal.,2011).Furthermore,staticanddynamicmoduliweremeasuredseparately,whichfailedtoensuretheconsistencyofexper
8、imentaldata,especiallydealingwithpartialsaturation.Inthispape
