成像测井孔隙度频谱技术与岩心孔隙分析资料对比研究  

A Comparative Study of Porosity Spectrum Techniques of Micro-electric Imaging Logging and Core Analysis of Porosity

作　　者：周彦球[1,2] 李晓辉[2] 范晓敏[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,吉林长春130000 [2]大庆钻探工程公司测井公司,黑龙江大庆163412

出　　处：《测井技术》2014年第3期309-314,共6页Well Logging Technology

摘　　要：成像测井孔隙度频谱技术与岩心孔隙分析资料可从不同侧面揭示岩石孔隙的发育状况和分布特征,通过对比建立二者之间的联系,对于局部地区的储层评价具有重要的参考价值。阐述了成像测井孔隙度分析技术以及评价孔隙非均质性的特征参数。介绍了岩心铸体薄片显微图像与恒速压汞技术原理,分析了它们与成像测井之间的异同。综合2种资料对某油田孔隙型碳酸盐岩储层进行了实例分析,结合生产实践发现,成像测井孔隙度谱与岩心显微图像对于孔隙总体特征的反映具有良好的一致性,对于孔隙非均质性的解释互相吻合。通过对比恒速压汞孔隙半径分布与对应深度附近成像孔隙度谱并进行回归拟合发现,成像测井的孔隙度谱可用于估计对应的孔隙半径分布,尤其对于后者方差的预测可获得很高的符合率,证实了成像测井用于微观解释的可行性。Porosity analysis techniques of micro-electric imaging logging and core analysis of porosity can reveal different aspects of rock porosity development status and its distribution characteristics respectively.It is significant reference for local reservoir evaluation that the relation established between the above two technologies by comparison analysis.We introduce imaging logging porosity analysis techniques and characteristic parameters for evaluation reservoir porosity heterogeneity.And the theories of core microscopic image of cast thin section and constant-rate mercury injection techniques are introduced,their similarities and differences between imaging logging were expounded.We analyze the application case of porous carbonate reservoirs in some oilfields combined with the above two kinds of logging data.The results show that imaging logging porosity spectrum and core porosity microscopic images have a good consistency in reflecting the general characteristics of the pores,they have mutual agreement in the interpretation of pore heterogeneity.By comparing pore radius distribution of constant-rate mercury injection with nearby imaging logging porosity spectrum of corresponding depths,a regression analysis was made which indicates that imaging logging porosity spectrum can be used to estimate corresponding pore radius distribution with an especially high coincidence rate for prediction of the variance of the latter,proving the feasibility of microscopic interpretation with imaging logging.

关 键 词：成像测井 孔隙度频谱 岩心显微图像 恒速压汞 碳酸盐岩 对比研究 

分 类 号：P631.84[天文地球—地质矿产勘探]