裂缝和孔洞型储层孔隙模型的理论进展

对有洞的和裂缝型储层的分析已经成为一个热点，因而孔隙模型的研究近年得到了很好的发展.目前已经用双孔隙和三孔隙模型研究这类储层的特性并寻找估计孔隙指数的方法，以便计算含水饱和度.用串联或并联电阻网络模拟储层表明：双孔隙模型适用于基质与非连通孔洞储层以及裂缝和（或）连通孔洞的储层.三孔隙模型更适用于由基质、裂缝和不连通孔洞组成储层的岩石物理评价，对于当前碳酸盐岩和火成岩以及变质岩储层评价具有明显的指导意义.

Progress in porosity model for fractured and vuggy reservoirs

Currently,the analysis of vuggy and fractured reservoirs has been an area of significant interest.Recent researches on porosity models are better developed.Several researchers have studied the characterization of these reservoirs using dual porosity and triple porosity models and have looked for means of estimating values of the porosity exponent m for use in calculations of water saturation.Reservoirs can be modeled as a parallel or serial resistance network.The results indicated that dual porosity model applies to reservoirs made out of matrix and non-connected vugs or reservoirs made out of matrix and natural fractures/connected vugs,whereas triple porosity model holds for petrophysical analysis of reservoirs of all combinations of matrix,fracture and non-connected vug porosities.It is of guiding significance for the evaluation of igneous,metamorphic and carbonate reservoirs.