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JournalofOilandGasTechnology石油天然气学报201739(5)83-90PublishedOnlineOctober2017inHans.http://www.hanspub.org/journal/jogthttps://doi.org/10.12677/jogt.2017.395070HydrocarbonIdentificationTechniqueBasedonLowFieldNMRWellLoggingofDrillingFluidsFangYuan12JunYan2*JingLuo2GuangzhaoYang3HongweiWang3ShimingChen1ShuaiHua121ShanghaiInstituteofAppliedMathematicsandMechanics(ShanghaiUniversity)Shanghai2Post-DoctoryWorkingStationofSuzhouAnalyticalInstrumentCo.Ltd.SuzhouJiangsu3TheSecondMud-loggingCompanyDaqingDrillingEngineeringCompanySongyuanJilinReceived:Jun.8th2017;accepted:Aug.30th2017;published:Oct.15th2017AbstractWiththeprogressofdrillingtechnologyandthecomplicationofexplorationanddevelopmentFluorescentloggingandgasloggingcouldnotmeetthedemandsoffieldoilandgasidentificationandevaluation.Whendifferentfluidsinoilandgaslayerandwaterlayeraredrilledtheresponselocationofdrillingfluidisdifferentinnuclearmagneticrelaxationspectra.Accordingtothecha-racteristicsofdrillingfluidtheratioofoilandwatercontentcouldbecalculatedtojudgefluidtypesinreservoirandapreliminarystandardmethodwasbuiltfordifferentareasanddifferentoilreservoirstosolvethecomprehensiveutilizationincombinationwithwell-logginginterpreta-tionandfluorescenceparametersthisstudyprovidedacomprehensiveandaccuratebasisforde-cisionmakingforwellcompletionandoiltestinghorizon.ComparedwiththeconventionalmudloggingmethodslowfieldnuclearmagneticresonancetechnologyisusedtostudythewaterbaseddrillingfluidbasedontheirNMR