俄罗斯西伯利亚地台油气成藏条件与分布规律

Reserch on hydrocarbon accumulation condition and distributive regulation of Siberian platform,Russia

俄罗斯西伯利亚地台油气资源潜力巨大,勘探程度低,是中国石油公司海外油气勘探开发的重要目标区之一。以构造单元类型为基础,通过对西伯利亚地台油气成藏条件、圈闭类型及油气分布等特征的综合分析初步得出:控制西伯利亚地台油气分布的因素主要为构造作用及地层与烃源岩发育特征,油气成藏模式主要为自生自储式;油气藏主要分布于不发育地盾的克拉通内部隆起区及大陆边缘坳陷中,前者的富油气层位主要为文德系—寒武系,后者的富油气层位主要为二叠系—侏罗系;油气藏类型主要为地层-构造复合型。

Siberian platform of Russia has tremendous potential prediction in hydrocarbon but poor in exploration research. The platform is one of the important target areas of overseas hydrocarbon exploration and for the CNPC. On the basis of the types of tectonic units, the comprehensive analysis results of hydrocarbon accumulation condition, trap type and hydrocarbon distribution characteristics, show that the key factors that controlling the hy- drocarbon distribution of Siberian platform are tectonic action and the characteristics of strata and source rocks ; the model of hydrocarbon accumulation is characterized by being ,generated and reserved indigenously. Hydrocarbon reservoirs mainly distributed in uplifted areas of eratonic margin without shield and depressions of continental margin, the former hydrocarbon enriched layer lay in Permian- Jurassic, and the latter in Vendian-Cambrian. The main type of hydrocarbon reservoir is stratigraphical-structural composite.