火山岩岩性识别方法研究  

THE IDENTIFICATION METHOD of VOLCANIC LITHOLOGY

作　　者：赵新建[1] 胡刚[1] 张梦宁[1] 邹雪峰[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室

出　　处：《国外测井技术》2011年第6期28-30,33,共4页World Well Logging Technology

摘　　要：在岩性识别中,常规测井资料对火山熔岩和火山碎屑岩的区分效果较好,对火山熔岩中某些岩性的区分效果却不是很好。而ECS(元素俘获谱测井)对于区分不同岩性的火山熔岩效果十分明显。本文概括了不同岩性的火山岩岩性特征,对常规测井资料和ECS测井资料进行研究分析,统计研究区玄武岩、安山岩、凝灰岩和火山角砾岩四种火山岩的测井特征响应,优选出对火山岩岩性反应灵敏的物理量和测井参数进行交汇图分析,建立一套适合研究区的岩性图版。研究表明,该方法具有很强的实用性。It is effectively to distinguish volcanic lava and volcaniclastic rock with conventional logging data but some lithology of volcanic lava.ECS(element capture spectra logging) is effective to distinguish volcanic lava of different lithology.The characteristics of different volcanic lithology are summarized in the paper.Through analyzing conventional logging data and ECS logging data,and characteristics of four volcanic rocks(basalt,andesite,tuff and volcanic breccia) in the region of interest,then optimizing the physical quantities and logging parameters which sensitive to volcanic lithology,finally a set of lithologic plates is established for the area.Researches indicat that the method is practical.

关 键 词：火山岩 岩性识别 测井方法 ECS 

分 类 号：P631.84[天文地球—地质矿产勘探]