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 bond index m of the complex 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,造成孔隙胶结指数m等岩电参数的改变。对于孔隙胶结指数的研究,有通过岩电实验统计的,也有通过建立孔隙模型推导的。由于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是准确计算m值的关键。

Various types of reservoir rocks containing vug and fracture are often referred to as a complex reservoir. The analysis of vuggy and fractured reservoirs has been an area of significant interest in the past few years. In order to obtain higher accuracy of the reservoir water saturation, many scholars have done further and systematicly experimental study and calculation. These studies are all based on the Archie formula. The presence of vug and fracture lead to the heterogeneity of the reservoir and result in the changes of bond index m in lithological-electrical parameters. The pore bond index is studied by either statistics of lithological-electrical experiments or the derivation from pore models. Due to various methods have some limitations, it is the key to accurately calculate the value m that finding a method which can reflect the various factors more completely without introduction of multi-parameter.