电法新技术（nxpowerlite）

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1、3DEXINTERPRETATIONMETHODThe3DExplorer™InductionLoggingService3DExplorer™PrimaryImpetus…OtherPossibleApplications…Identification&QuantificationofLowResistivity&LowContrastPayFractureDetection&OrientationMeasurementAnisotropyCorrelationwithSeismicsOilBasedMudDipmeterDeviated&

2、HorizontalWellPlanningCrossbeds&sand/shale&siltstonesRhRvOriginofElectricalAnisotropyLaminatedsand-shalesequencesSandsWithDifferentGrainSizeThinresistiveorconductivestreaks20-30%ofglobalreservesinanisotropicreservoirsResistivity:examplex545x580x600x63030800.2200GammarayLater

3、ologsProductiontest1750BOPDGOR3250CleansandCoreThinbedsPrincipleofMeasurementSand:highRtShale:lowRtRhRvSand-ShaleResistivityModel1Resistivity(Ohm-m)10Rv=5.5-mRh=1.8-mRsand=10Ohm-mRshale=1Ohm-m100%50%0%Net/grossSandresistivityShaleresistivity10m1mResistivity(Linearscale)V

4、erticalresistivityHorizontalresistivityAnisotropyResistivityResponseinLaminarSand/ShaleSequences8Frequencies(10-150kHz)7Receivers:1Transmitter:zTz7HzzTzHDILConfiguration32145063DEXConfiguration3Receivers:RyRzRxxTxTxHxxHxyHxzTzTzHzzHzxHzyyTyTyHyyHyxHyxMultipleFrequencies(20-

5、200kHz)zFullMagneticFieldTensor3Transmitters:IsotropicandAnisotropicResponses10-11001011020246810121416TrueModelResistivity(Ohm-m)LoggingDepth(m)Rh-1000-500050010000246810121416HxxandHzzResponsesApparentConductivity(mS/m)HxxisotropicHzzan/isotropicRvHxxanisotropicHorizontal‘

6、ParallelConductivity’TensorComponentVertical‘SeriesConductivity’TensorComponentIsotropicTensorResistivityModelChorzCvertIsotropicTensorResistivityEquationsIsotropicLaminarSandConductivityComponentIsotropicLaminarShaleVolumeLaminarSandPorosity?Properreservoircharacterizationr

7、equiresthecorrectdeterminationofthelaminarsandfractionporosity.TensorResistivityPetrophysicalModelThomas-StieberShaleDistributionModelReferencesThomas-Stieber,1975:‘VolumetricallyBalanced’ShaleDistributionModelGR‘Response’Vsh&DensitytModelDemonstratedImportanceof‘LaminarSan

8、dTotalPorosity’Haley,1979:LAMIS1,CompleteThomas-Stieber&Waxman-Smits-Thomas