摘要
中新元古界是目前油气勘探的主要地层,研究华北克拉通中新元古界烃源岩特征对指导下一步油气勘探具有重要意义。前人对辽西地区的烃源岩研究主要集中在中新元古界洪水庄组和下马岭组。为研究辽西地区铁岭组烃源岩特征对两口钻井和4条野外露头剖面样品进行了地球化学分析。研究结果表明,辽西地区铁岭组烃源岩主要为黑色页岩和泥质云岩,测试结果显示铁岭组平均有机质含量为0.37%,生烃潜量平均为0.26 mg/g,有机质类型为II1-I型,有机质成熟度为成熟–高熟阶段。The Middle Neoproterozoic is currently the main stratum for oil and gas exploration, and studying the characteristics of hydrocarbon source rocks in the North China Craton is of great significance for guiding the next step of oil and gas exploration. Previous studies on hydrocarbon source rocks in Liaoxi Area mainly focused on the Hongshuizhuang Formation and Xiamaling Formation of the Middle Neoproterozoic. To study the characteristics of source rocks in the Tieling Formation in Liaoxi Area, geochemical analysis was conducted on two drilling wells and four field outcrop profile samples. The research results indicate that the source rocks of the Tieling Formation in Liaoxi Area are mainly black shale and mudstone dolomite. The test results show that the average organic matter content of the Tieling Formation is 0.37%, the average hydrocarbon generation potential is 0.26 mg/g, the organic matter type is II1-I, and the organic matter maturity is in the mature to high mature stage.
出处
《地球科学前沿（汉斯）》
2024年第11期1351-1357,共7页
Advances in Geosciences
