测井相-岩相分析技术在复杂岩性中的应用  

Application of Logging Facies-Lithofacies Analysis in Complex Lithology

作　　者：宋秋强[1] 张占松[1] 张冲[1] 黄若坤[1] 刘欢[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)长江大学地球物理与石油资源学院,湖北武汉430100

出　　处：《石油天然气学报》2013年第7期78-81,3,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2011ZX05030-004)

摘　　要：针对下刚果盆地某区块的复杂岩性,以测井资料为基础,通过特征提取和最优聚类划分出了17个测井相。结合该区的取心资料,通过岩心标定,赋予了这17个测井相一定的地质意义,建立了测井相-岩相知识库。以该知识库为基础,通过判别分析的方法,对未取心段的岩性进行了识别,绘制了目的层段的岩性柱状剖面图。实例应用结果表明,该方法具有较高的准确度和良好的地质效果。The lithology was very complex in the Lower Congo Basin.To identify the type of rock , the features of logging data were extracted and they were divided into 17logging facies.In combination with coring data in the area , the 17log facies were assigned with their geological significance.A knowledge base was established for logging facies and lithofacies.And based on the knowledge base and method of identification , the lithology of uncoring section is recognized , a columnar sectional diagram is developed for the target zone.Application of examples shows that the method has high accuracy and good geological effect.

关 键 词：测井相 最优聚类 判别分析 特征提取 岩性识别 

分 类 号：P631.84[天文地球—地质矿产勘探]