济阳坳陷青东凹陷古近系沙河街组烃源岩地球化学特征及生烃潜力综合评价  

Comprehensive evaluation of geochemical characteristic and hydrocarbon generation potential of source rocks of Paleogene Shahejie formation in Qingdong sag,Jiyang depression

作　　者：张明星[1] 郭耿生[1] 张琳璞[1] 

机构地区：[1]中国石化胜利油田分公司石油开发中心有限公司,山东东营257061

出　　处：《东北石油大学学报》2017年第3期34-43,102,共11页Journal of Northeast Petroleum University

摘　　要：采用有机地球化学方法和盆地模拟技术,结合济阳坳陷青东凹陷古近系沙河街组构造、沉积等方面的研究成果,分析研究区古近系烃源岩的生烃潜力、演化特征等。结果表明:研究区主要存在沙三下亚段和沙四上亚段两套烃源岩,烃源岩具有"北厚南薄"的发育特征,在凹陷中—北部深洼带最为发育,往南厚度变小;烃源岩有机质丰度较高,有机质类型较好(Ⅰ—Ⅱ1),具有良好的生烃物质基础;烃源岩处于低熟—成熟阶段,成熟烃源岩的分布范围有限,主要局限于北部洼陷和中部洼陷的深洼区,但研究区沙四段烃源岩具有形成低熟油的基本条件,为研究区油气聚集创造一定的物质基础。The industrial oil flow has been discovered in Qingdong sag,Jiyang depression.The hydrocarbon generation potential and the evolution of the Paleogene source rocks have been studied based on geochemical and basin modeling technology,combined by structural and sedimentary achievements.The results show that there are two sets of major source rock series in the study area,including the lower section of the 3rd member(Es3)and the upper section of the 4th member(Es4s)in Shahejie formation.The two sets of source rock series mainly distribute in north and central part of the sag,with thickness decreasing towards the south,featuring 'thick north and thin south'.The source rocks have favorable material basis with high organic abundance and type I-II1 of the organic matter.Though the source rocks are in the stage of immature-low mature and the distribution of mature source rocks is limited,the Es4 s source rocks are able to generate immature oils,providing certain amount of resource in the research area.

关 键 词：烃源岩 地球化学特征 生烃潜力 低熟油 古近系 青东凹陷 济阳坳陷 

分 类 号：TE122.11[石油与天然气工程—油气勘探]