油气储层自生伊利石的分离提纯及其K-Ar同位素测年技术研究  

SEPARATION OF AUTHIGENIC ILLITE IN HYDROCARBON RESERVOIRS AND ITS K-Ar DATING TECHNIQUES

作　　者：张有瑜[1] 董爱正[1] 罗修泉[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《现代地质》2001年第3期315-320,共6页Geoscience

基　　金：中国石油天然气集团公司"九五"科技工程项目 ( 970 2 0 6)

摘　　要：油气注入史研究对于指导油气勘探具有非常重要的意义。油气储层自生伊利石K Ar同位素测年可以为油气注入时间的研究提供科学依据。文中对油气储层自生伊利石分离提纯及其K Ar同位素测年技术进行了系统介绍。对碎屑含钾矿物杂质对自生伊利石K Ar同位素年龄的影响进行了深入研究 ,建立了一套完整的数据处理技术并提出了“校正年龄”的概念。Understanding of the hydrocarbon filling of the reservior is very important for hydrocarbon exploration. K-Ar dating of authigenic illite in reservior can provide very useful data of the hydrocarbon filling history. The separation of authigenic illite in hydrocarbon reservoirs and its K-Ar dating techniques are described in detail in this paper. Detrital K-bearing minerals such as potassium feldspar and illite in authigenic illite may lead to an erroneous age. For the samples with detrital potassium feldspar and/or detrital illite, it is necessary to find a way to remove the contribution created by these impurities, even at low levels, to the authigenic illite K-Ar age. This paper conclude a detailed study of the impact of contaminant phases on K-Ar age, and as a result, a data processing technique is developed and a new concept named 'Corrected Age' is presented.

关 键 词：自生伊利石 K-AR测年 分离 提纯 真空抽滤 “校正年龄” 油气储层 钾同位素 氩同位素 

分 类 号：P618.130.2[天文地球—矿床学] P597[天文地球—地质学]