岩心CT微观驱替实验的图像处理研究  

Image processing for CT microscopic coreflooding experiments

作　　者：张顺康[1] 陈月明[1] 侯健[1] 施晓乐[2] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]胜利油田有限公司地质科学研究院,山东东营257015

出　　处：《大庆石油地质与开发》2007年第1期10-12,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金资助项目(10302021)

摘　　要：针对CT微观驱替图像的特点,考虑图像中像素的空间分布,提出利用指示克里金方法分割图像。对不同驱替阶段的CT微观驱替图像进行分割,并和传统的简单阈值法的分割结果进行对比,在此基础上计算孔隙度等参数并结合室内实验结果进行了比较,验证了方法的有效性。结果表明,利用指示克里金方法分割CT微观驱替图像克服了传统分割方法的缺陷,因而能达到较好的分割效果。Taking the spatial distvibntion of image pixels into account, this paper presents a new method to perform image segmentation by indicator Kriging according to the distinguishing features of CT microscopic flooding image. CT images at different stages of water - flooding are segmented with the method, and then the results are compared with those of single threshold value method. Based on segmentation, parameters, such as porosity, are calculated and compared with laboratory, experiments, through which the implementation of the method is verified. The results indicate that CT microscopic flooding images can be segmented fairly well by indicator Kriging, which overcomes the defeat of lacking consideration of the spatial distribution of pixels by single threshold value method

关 键 词：CT 微观驱替图像 指示克里金 剩余油 孔隙 

分 类 号：TE135[石油与天然气工程—油气勘探]