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利用压汞曲线计算出来的分数维来定量表征储集层微观孔隙结构的非均质性;提出“基于盒维数的测井曲线刻度线网格加密法”,利用单砂体测井曲线计算的分数维来定量表征储集层层内及层间等宏观非均质性。最后,按照同一微相、同一单砂体层位将储集层微观分维与宏观分维联系起来建立储集层分维模型,从而实现了将微观非均质性的定量表征扩展到单砂体规模的宏观非均质性的定量表征。结合实际以某注水开发中后期油田的河流相砂岩储集层为例展开研究,应用效果较为理想。
The fractal dimension calculated by mercury intrusion curve is used to quantitatively characterize the heterogeneity of micro-pore structure in reservoirs. The paper proposes a “grid-line method based on box dimension” The fractal dimension can quantitatively characterize the macro-heterogeneities within and between reservoirs. Finally, based on the same microfacies and the same single sand body layer, the fractal dimension model of reservoir is established by combining the fractal dimension of the reservoir with the macroscopic fractal dimension, so that the quantitative characterization of microcosmic heterogeneity can be extended to single sand Quantitative Characterization of Macro - Heterogeneity of Volume Scale. Combined with the actual development of a water injection in the late fluvial sandstone reservoir as an example to study, the application effect is ideal.