油气储层自生伊利石分离提纯及其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：《矿物岩石地球化学通报》2001年第4期461-464,共4页Bulletin of Mineralogy, Petrology and Geochemistry

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。碎屑含钾矿物杂质对自生伊利石K Ar同位素年龄具有非常大的影响 ,文中对此进行了深入研究 ,建立了一套完整的数据处理技术并提出了“校正年龄”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 about 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 separate may lead to an erroneous age. For samples with detrital potassium feldspar and/or detrital illite, it is necessary to find a way to remove the contribution created by those impurities, even at low levels, to the authigenic illite K-Ar age. This paper concluded a detailed study on the impact of contaminant phases on K-Ar age, and as a result, a data processing technique has been developed and a new concept named “Corrected Age' has been 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" 

分 类 号：P632.7[天文地球—地质矿产勘探]