油气藏样品Re-Os-PGE分析方法及应用研究

铼-锇-铂族元素（Re-Os-PGE）油气成藏年代学及烃源示踪研究，是近年来国际上地球化学研究的热点。本项目拟全面建立超低本底富有机质沉积岩（烃源岩）、原油及沥青等样品的高精度铼-锇-铂族元素（Re-Os-PGE）分析方法。在此基础上，开展四川盆地安岳气田碳酸盐岩储层岩芯沥青及其烃源岩Re-Os-PGE同位素地球化学等研究，尝试对安岳气田的形成年代进行限定并进行烃源示踪，并尝试开展吉林松辽盆地西斜坡油砂矿原油及其烃源岩的Re-Os-PGE同位素地球化学研究工作，尝试确定油藏形成年代并进行油源对比。通过上述两方面典型应用实例工作，进一步探讨和验证Re-Os-PGE在油气藏定年和示踪领域的应用潜力。本项目的实施对我国深入开展油气藏Re-Os-PGE定年和示踪研究具有重要的意义。

The application of Re-Os geochronology for dating petroleum systems and tracing the source of hydrocarbons in petroleum using the Os isotope and PGE geochemistry are hot topics in recent years. In this study, we plan to construct an ultra-low procedural blank analytical protocol for Re-Os-PGE analysis of organic-rich sedimentary rock, crude oil and bitumen samples. Thereafter, we will conduct the Re-Os and PGE studies for bitumen samples from the drill-core of the Neoproterozoic-Cambrian marine bituminous dolomites, which are the reservoir rocks for the giant Anyue gasfield, and their source rocks, in the central Sichuan Basin. The purpose of the research is to constrain the formation age, and trace the source of hydrocarbon of the giant Anyue gasfield. We will also perform the Re-Os and PGE studies for the oil-sand samples from the west slope zone of Songliao basin and their source rocks, in order to obtain the formation age of the oil-sand oil, and to investigate the oil-source correlation. Through those two kinds of typical case studies, we will further demonstrate and test the possibility and reliability of using the Re-Os isotopes and PGE elemental systematics as tools for dating petroleum systems and hydrocarbon-source correlation.