CT在油气藏储量计算参数测定中的应用

APPLICATION OF COMPUTER TOMOGRAPHY TO THE DETERMINATION OF POROSITY AND OIL SATURATION IN A CORE SAMPLE

本文研究了应用第三代医用CT扫描仪进行油气藏储量计算参数测定的可行性,并测定了八块岩心样品的孔隙度及油、水饱和度,证明其结果与常规方法的测定值符合较好。并研制了应用医用CT分析岩心孔隙度和油、水饱和度的配套软件。指出了医用CT在进行岩心分析上的局限性和克服的方法。最后明确了本实验的意义,并展示了裂缝型油气藏储层岩心CT分析的一些情况及其孔隙度测定的数据。

This paper discusses the feasibility of applying a third generation medical X-ray comput- erized tomography(CT)scanner to the determination of porosity and oil saturation of cores. The porosities and oil saturations of eight core samples are determined with CT method and the results correspond with conventional method. A set of core analysis met hods is developed by using medical CT scanner as well as a special software package. The problems and limita- tions of this method are described and the ways to solve the problems are given. The signifi- cance of this study and CT analysis of a core from reservoir are presented and method of de- termination of core porosity is given.