岩心CT扫描图像分割计算缝洞孔隙度与测井资料处理结果对比研究  

Comparison of Fracture-vuggy Porosity and Logging Data Interpretation in CT Image Segmentation

作　　者：冯周[1] 刘瑞林[1] 应海玲[1] 何风[1] 肖红琳[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023

出　　处：《石油天然气学报》2011年第4期100-104,118,共5页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX05020-001)

摘　　要：针对缝洞型储层岩心CT扫描图像特征,研究了一种图像分割方法计算岩心缝洞孔隙度,并与常规测井资料三孔隙度模型计算的缝洞孔隙度及成像测井图像分割提取的面孔隙度进行了对比。结果表明,基于CT扫描图像灰度特性的算法可以从CT扫描图像中分割出岩心上尺寸较大的缝洞孔隙。应用该方法从岩心CT扫描图像提取的缝洞孔隙度与三孔隙度模型计算的缝洞孔隙度及成像测井图像分割提取的面孔隙度存在一定的对应关系。In allusion to the characteristics of core CT images of fracture-vuggy reservoirs,an image segmentation method was developed to calculate the core fracture-vuggy poresity,and it was compared with that calculated by triple porosity model and surface porosity extracted from borehole images segmentation.The results show that the segmentation algorithm based on CT image gray-level is efficient to segment large cavern and fractures on core CT images.The fracture-vuggy porosity interpreted by triple porosity model and surface porosity extracted from borehole images segmentation exist a certain relationship.

关 键 词：岩心分析 CT扫描 图像分割 缝洞孔隙度 

分 类 号：P631.84[天文地球—地质矿产勘探]