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    碳酸盐岩储层测井评价方法综合研究

    Integrated research on well-logging evaluation methods for carbonate reservoir

    • 摘要: 从碳酸盐岩储层裂缝孔洞识别、储层参数表征、流体性质判别及数学方法的应用等4个方面,系统总结厘定了国内外碳酸盐岩储层测井评价的方法技术。通过对比分析各种评价方法可知:依据一定的数学算法,综合利用常规测井和成像测井资料,不仅能很好地识别储层类型,而且能实现对储层参数的半定量、定量计算评价。利用常规测井和成像测井新技术(电成像和声成像)资料计算出缝洞储层的各项物性参数,结合核磁共振测井和偶极横波测井能进一步判别出流体性质。地质统计学、模糊数学、神经网络和支持向量机等数学方法的应用,提高了复杂碳酸盐岩储层测井评价的有效性和准确性。综合研究表明,在碳酸盐岩储层测井评价中,应充分发挥各种方法的优势,综合应用各种方法相互补充和验证。

       

      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.

       

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