渗透率模型研究进展

Review on Absolute Permeability Model

讨论单重孔隙介质和双重孔隙介质渗透率模型的发展,分析渗透率建模面临的问题:建模理论研究缺乏,至今没有提出统一的模型,双重孔隙介质渗透率模型亟待发展。单重孔隙介质渗透率与孔隙度相关性较好,但仅有孔隙度不能建立精确的渗透率模型,还需考虑岩石结构和孔隙结构参数。双重孔隙介质渗透率可分为基质渗透率和裂缝渗透率2个方面研究,它们之间的耦合是渗透率建模重点考虑的问题。提出应用分形理论和成像测井有望提高双重孔隙介质渗透率模型的建模精度。渗透率建模发展方向是三维数字岩心技术和激发极化法的应用。

Introduced is current permeability model about single porosity media and dual porosity media. There exist some problems in permeability model, such as lacking theoretical researches, no uniform model and model of dual porosity media also needs urgently developing. Permeability and porosity of single porosity media have good correlation, but porosity is not the only parameter which is crucial to the accurate permeability model, and therefore other parameters of rock structure and pore structure should be considered. Permeability model about dual porosity media can be divided into matrix permeability and fracture permeability, and the coupling of them is critical for permeability model. The application of fractal theory and imaging well logging may improve the accuracy of dual porosity media modeling. Beside this, the application of 3D digital core technology and induced polarization method are the importance in permeability model con- struction.