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1、...中国石油大学（华东）第一篇地震岩石物理学及在储层预测的应用SeismicRockphysicsTheoryandtheApplicationinReservorDiscrimination摘要储层预测研究主要在于弄清储层构造特征、岩性特征及储层参数，进而减少勘探开发风险。储层参数包括孔隙度、渗透率、流体类型等，而地震资料提供的是地震波旅行时和振幅信息，再通过反演可得到弹性参数。地震岩石物理学则为储层参数和弹性参数之间搭建桥梁。横波速度是重要的地球物理参数在近些年发展起来的叠前地震储层弹性参数反演及流体检测方面起着重要的作用。地震横波
2、速度估计技术是根据地震岩石物理建立的目标岩石模量计算模式，利用计算出的模量重建纵波曲线，与实测曲线建立迭代格式修正岩石模量，实现横波速度等关键参数估计。在方法实现上利用了Xu-White模型为初始模型。流体因子是识别储层流体的重要参数，常规流体因子多是基于单相介质理论提出的，而从双相介质岩石物理理论出发可以更好的研究孔隙流体对介质岩石弹性性质的影响，为敏感流体因子的构建提供更好的指导。本文采用了Gassmann流体因子，并分析了其敏感性。关键词：等效介质模量，孔隙度，横波速度估算，Xu-White模型，Gassmann流体因子。I....
3、..中国石油大学（华东）SeismicRockphysicsTheoryandtheApplicationinReservorDiscriminationAbstractThestudyofreservoirpredictionismainlytoinvestigatethecharacteristicsofreservoirstructure,lithologicfeaturesandreservoirparameters,aimtoreducetheriskofexploration.Reservoirparametersinclud
4、eporosity,permeability,fluidtype,etc,Butseismicdataonlyreflectsonseismictraveltime,amplitudeinformation,andelasticparameterswhichcanbeobtainedthrouthseismicinversion.Seismicrockphysicsbuildsbridgesforreservoirparameterselastic.S-wavevelocity,animportantgeophysicalparamete
5、r,playsanimportantroleinpre-stackseismicreservoirelasticparameterinversionandfluiddetectionwitchdevelopedinrecentyears.Theseismicshearwavevelocityestimationtechniqueisbasedontherockmasscalculationmodelestablishedbytheseismicrockphysics,reconstructsthelongitudinalwavecurve
6、withthecalculatedmodulus,establishestheiterativepatternwiththemeasuredcurvetocorrecttherockmodulus,andobtainthekeyparameterssuchastheshearwavevelocity.TheXu-Whitemodelwasusedastheinitialmodelinthemethodimplementation.Fluidfactorisanimportantparametertoidentifyreservoirflu
7、id.Conventionalfluidfactorsaremostlybasedonthetheoryofsingle-phasemedium.Fromthetheoryofbiphasicmediumrockphysics,itcanbebettertostudytheeffectofporefluidontheelasticpropertiesoffluidTheconstructionoffluidfactorsprovidesbetterguidance.Inthispaper,theGassmannfluidfactorisu
8、sedanditssensitivityisanalyzed.Keyword:Equivalentmediummodulus,porosity,Shearwavevelocityestimat
