扫描电镜与图像分析在储层研究中的联合应用

COMBINED APPLICATION OF SEM AND IMAGE ANALYSIS IN THE STUDY OF RESERVOIR

曹寅 朱樱 黎琼

CAO Yin ZHU Ying LI Qiong

中国石化无锡实验地质研究所, 江苏无锡 214151 2. 中国石化新星石油公司华东石油局规划院, 江苏扬州 225002

Wuxi Research Institute of Experimental Geology, SINOPEC, Wuxi, Jiangsu 214151, China 2. Research Institute of Petroleum Planning, East China Bureau of Petroleum, SINOPEC, Yangzhou, Jiangsu 225002, China

该文主要论述采用新一代的扫描电镜和带有图像分析功能的能谱仪联合对砂岩和砂岩铸体进行分析。由于扫描电镜具有景深大、立体感强和分辨率高的特点,使砂岩分析可分别采用二次电子图像和背散射图像两种方法,不仅能获得砂岩的粒间孔隙、粒间胶结物、喉道连通性及配位数等信息,而且还可通过图像分析软件快速定量计算孔隙率。由此获得多种信息,再结合其他资料可对具体地区进行储层评价。

In this paper, a new generation of scanning election microscope (SEM) and an energy spectrometer (ES) with the function of image analysis are combined used to analyse sandstone and cast sandstone. As SEM has the features of large field depth, strong relief perception and high resolution, the analysis of sandstone can use the secondary electron imagery and the back scatter imagery two methods respectively. By these methods, not only the intergranular pores, intergranular cement, throat connection, and coordination number of sandstone can be obtained, but also porosity factors can be calculated rapidly and quantitatively by means of image analytical software. The various information obtained combined with other data makes it possible to evaluate the reservoirs of specific areas.

https://doi.org/10.11781/sysydz200102221