基于多尺度量纲统一原则的油藏孔隙分形输运特性研究

发布时间：2018-07-18 10:33

【摘要】：油藏孔隙分布具有分形特征,如何将分形描述方法应用到油藏多孔介质内流体的输运特性研究过程中,目前的研究方法存在一定局限,主要是没有考虑量纲统一原则和尺度效应等。本文基于量纲统一原则,利用分形描述方法,对油藏多孔介质内输运过程渗透率和渗流流量进行了推导,得到了输运特性参数的单位尺度转换系数,据此可以实现基于微观分形特征描述来分析宏观输运过程。本文建立的分形输运描述方程能够实现不同尺度层级间的转换,得到的宏观特性参数结果更接近实测值。基于本文所建模型,利用某油藏数据进行了分析验证,得到了输运流量及渗透率变化规律与实际油藏的分布规律吻合。
[Abstract]:The pore distribution of reservoir has fractal characteristics. How to apply the fractal description method to the study of the transport characteristics of fluid in porous media has some limitations. The principle of dimensionality unification and scale effect are not considered. Based on the unified principle of dimensionality and using fractal description method, the permeability and seepage flow rate of transport process in porous media are derived, and the unit scale conversion coefficients of transport characteristic parameters are obtained. Based on the description of microscopic fractal features, the macroscopic transport process can be analyzed. The fractal transport description equation established in this paper can realize the conversion between different scale levels, and the obtained macroscopic characteristic parameters are closer to the measured values. Based on the model established in this paper, a certain reservoir data is used to analyze and verify, and the variation law of transport flow and permeability is in agreement with the distribution law of actual reservoir.
【作者单位】：东北石油大学土木建筑工程学院;东北石油大学黑龙江省防灾减灾及防护工程重点实验室;
【基金】：国家自然科学基金资助项目(No.51176023) 黑龙江省自然科学基金重点资助项目(No.ZD2015011) 东北石油大学研究生创新科研项目资助项目(No.YJSCX2016-032NEPU)
【分类号】：TE31

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