复杂孔隙储层胶结指数m的确定方法及影响因素

DETERMINATION METHODS AND INFLUENCING FACTORS OF THE CEMENTATION INDEX M OF COMPLEX PORE RESERVOIR

含有裂缝和孔洞的各类岩石储层通常被称为复杂孔隙储层。近年来，对于复杂储层的分析研究已经成为一个热点，为了得到精度更高的储层含水饱和度，国内许多学者进行了深入和系统的实验研究和计算。这些研究都是基于阿尔奇公式展开的，由于裂缝和孔洞的存在，导致了储层的非均质性，造成孔隙指数m等岩电参数的改变。对于孔隙指数的研究，有通过岩电实验统计的，也有通过建立孔隙模型推导的。各种方法都有一定的局限性，因此找到一个能较全面反映各个因素的又不引入多参数的方法将具有很强的生命力。

Various rock reservoirs containing fractures and vugs are usually referred to complex pore reservoirs.In recent years,complex reservoir analysis and research have become a hotspot.In order to get more accurate water saturation of a reservoir,many domestic scholars have carried out deep and systematical experimental study and calculation.These researches are based on Archie equation.The presence of fractures and vugs leads to the heterogeneity of the reservoir and results in change of lithological-electrical parameters such as porosity index m.Porosity index is obtained through statistics of lithological-electrical experiments or derived from porosity models.Each method has its limitation.Therefore,a method which can reflect various factors completely without introduction of multi-parameter will have a strong vitality.