利用CT扫描技术实现对岩心微观驱替过程的研究

Study of Microscopic Blooding Process Using CT Scanning Technique

利用CT扫描技术对岩心内部孔隙度的空间分布测定,可识别岩心的非均质性特征。不同驱替液在微观介质中渗流分布图像的重建,直观地得到了岩心不同断面不同时刻的渗流分布特征。通过对每一驱替阶段岩心含油饱和度值的计算,得到微观剩余油在微观介质中的三维分布及含油饱和度的沿程分布信息。从而实现岩心驱替过程中渗透规律的描述及含油饱和度的可视化和定量表征。

The properties of inhomogeneous of cores can be identified by measuring porosity distribution of inner cores through applying CT scan technology. After reconstruction of inhomogeneous distribution images in micromedium by different flooding fluid,the percolation distribution feature in different cores＇ sections and time can be observed intuitionally. By means of calculating oil saturation of each flooding stage,the data of microscopic remaining oil 3D distribution and oil saturation distribution can be got easily,thus realize the description of percolation rules and the visualization and quantitative characterization of oil saturation distribution during the period of flooding.