Abstract:
We systematically summarized logging evaluation methods and techniques of carbonate reservoir both at home and abroad from the perspectives of different classifications of reservoir types,parameters characterizations,fluid property discrimination and mathematical methods.After an in-depth analysis and comprehensive compari-son of various evaluation methods,some conclusions were obtained.According to certain mathematical algorithms,comprehensively using conventional logging and imaging logging data can well identify the reservoir and realize half-quantitative & quantitative computation of reservoir parameters.By utilizing conventional logging and new logging techniques (electronic logging and sonic logging),the physical parameters of fractured-cavern reservoirs can be computed.On the basis,the fluid property can be discriminated by combining nuclear magnetic resonance and dipole shear sonic.By applying geostatistics,fuzzy mathematics,neutral network and support vector machine etc,the accuracy and effectiveness of logging evaluation for carbonate reservoirs are improved.Integrated application indicates that the advantages of all evaluation methods should be emphasized,and the methods should be comprehensively applied to implement and prove each other.