碳酸盐岩储层孔隙模型及孔隙结构指数研究进展

在调研国内外碳酸盐岩孔隙模型及孔隙结构指数m相关文献的基础上,按照研究对象和导电方式的不同,将现有的孔隙模型归类为基于串并联导电的双孔隙模型、基于串并联导电的三孔隙模型和基于有效介质理论的孔隙模型3类,同时按照研究对象的不同,总结出Shell公式、Borai公式、Focke and Munn公式、Nugent公式、Ragland公式、Gomez Rivero公式等6种不同类型典型碳酸盐岩胶结指数的计算模型.建议以后在碳酸盐岩孔、洞、缝不同类型的导电机理、模型参数求取及现场应用方面做更深入的研究.

Research progress of pore models and pore structure exponent of carbonate reservoirs

The study of the fractured reservoirs and the dissolved-pore reservoirs is one of research focuses in oil and gas industry.The diversity of the pore types of the carbonate reservoirs leads to the difference in the value of the obvious pore structure exponent.The study of the pore models and the pore structure exponent of the carbonate reservoirs is important to the calculation of the saturation of the carbonate reservoirs.Based on the study of the related literatures,according to different research objects and different conducting modes,the pore models can be classified into three types:dual-void model based on series parallel conduction,triple-void model based on series parallel conduction and void model effective medium theory.According to the different research objects,6 typical models for calculating the pore structure exponent of the carbonate reservoirs are proposed,including Shell equation,Borai equation,Focke and Munn equation,Nugent equation,Ragland equation and Gomez Rivero equation.It is suggested that the further research of the conducting mechanisms of different pore types(hole,pore and fracture),the calculation of model parameters and the field application of the models should be done.