孔隙结构对致密碳酸盐岩地震岩石物理特征的影响分析（英文）-豆柴文库

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孔隙结构对致密碳酸盐岩地震岩石物理特征的影响分析（英文）
ImpactofPoreStructureonSeismicPetrophysicalCharacteristicsofTightCarbonateReservoirs
Abstract:
Tightcarbonatereservoirshavebecomeahottopicinoilandgasexplorationduetotheirabundanceandconsiderablehydrocarbonpotential.However,theircomplexporestructureoftenposeschallengesinpredictingtheirseismicpetrophysicalcharacteristics,whichisessentialinevaluatingtheirviabilityasreservoirs.Thisstudyaimstoanalyzetheimpactofporestructureontheseismicpetrophysicalcharacteristicsoftightcarbonatereservoirs.Byutilizinglaboratorymeasurementsandnumericalsimulations,wefoundthatporesize,connectivity,andshapesignificantlyaffecttheacousticandelasticpropertiesoftherockmatrix,influencingtheinterpretationoftheseismicdata.
Introduction:
Tightcarbonatereservoirsarecharacterizedbytheirlowporosityandpermeability,resultinginlowproductionratesandrecoveryfactors.Accurateandefficientidentificationofthesereservoirsiscrucialinthepetroleumindustry.Seismicexplorationisoftenusedtoevaluatereservoirs,providingvaluableinformationabouttherockmatrix,fluidcontent,andstructuralfeatures.However,theinterpretationofthedatacanbechallengingduetotheintricateporestructurepresentintightcarbonates.Therefore,understandingtheimpactofporestructureonseismicpetrophysicalcharacteristicsisfundamentalforeffectivereservoirevaluation.
Analysis:
Inthisstudy,weconductedlaboratorymeasurementsandnumericalsimulationstoanalyzetheimpactofporestructureontheseismicpetrophysicalcharacteristicsoftightcarbonatereservoirs.Weinvestigatedthreemainparametersofporestructure,namelyporesize,connectivity,andshape.Ourresultsshowedthatporesizehadasignificantimpactontheacousticandelasticpropertiesoftherockmatrix.Thesmallertheporesize,thestrongertheattenuationofseismicwaves,resultinginlowerseismicamplitudesinthedata.Conversely,largeporesizesfacilitatedthetransmissionofseismicwavesthroughthematrix,yieldinghigherseismicamplitudes.
Poreconnectivitywasalsofoundtoinfluencetheseismiccharacteristicsoftightcarbonates.Increasingporeconnecti