中文摘要：

选取东营凹陷S井6个层段的30个钻孔岩芯样品,开展孢粉相和热解检测分析,研究不同层段有机质来源、类型的差异性并探讨其页岩气勘探的意义。结果表明：东营凹陷沙河街组具有丰富的有机质来源,整体形成于安静低能的缺氧静水环境,这给页岩气的形成提供了物质基础。其中沙三下有机质以无定形为主,类型好,沙一段除无定形外,藻类特别发育,2个层段有机质丰度都较高,总有机碳质量分数（TOC）平均值大于2%。因此,沙河街组是烃源岩形成的最佳场所,特别是沙三下和沙一段,是页岩气勘探和开发的优选层段。综合孢粉相和热解资料,在考虑有机质丰度的基础上,也应考虑有机质的构成差异来进行烃源评价,它对有机质的演化和生烃具有较大影响,其中以无定形有机质和藻类为主要来源的烃源岩具有较好的生烃潜力。

英文摘要：

Based on the palynofacies analysis and Rock-Eval pyrolysis of 30 core samples collected from six different layers of the S borehole drilled in Dongying Depression, the origin, types of organic matter （OM） from each layer respectively were determined, and the source potential of shale gas in this region was discussed. The results show that： the Shahejie Formation has a rich source of OM, and is deposited within a relatively quiet and low-energy anoxic environment, which are in favor of the generation and accumulation of shale gas. The OM from lower part of Es3 is dominated by amorphous organic matter （AOM） with kerogen type [, Esl contains a high proportion of algae, and mean TOC values of both layers are greater than 2%. Therefore, the Shahejie Formation is one of the extremely favorable strata for the formation of effective source rocks, especially Es3x and Esl, and these two are the most preferred targets for shale gas exploration and development. The results also indicate that we should pay more attention to the composition of organic matter besides the quantity of OM, and this will affect the quality of OM and hydrocarbon generation. Source rocks containing high amount of OM that mainly comes from AOM and algae have a better hydrocarbon generation potential.