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.
出处
《石油天然气学报》
CAS
CSCD
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)
关键词
测井相
最优聚类
判别分析
特征提取
岩性识别
logging facies
optimal clustering
discriminant analysis
feature extraction
lithologic identification
