【摘要】 用气相色谱和色谱-质谱法分析了苏北盆地第三系泥岩和原油中的生物标记物。以甾烷、藿烷、4-甲基甾烷、伽马蜡烷、β-胡萝卜烷、类异戊二烯烷烃和甲基藿烷等生物标记物的组合对比表明,Ef~4和Ef~2泥岩富含伽马蜡烷,具有植烷优势。埋藏深度2750～3100米左右的Ef~4泥岩是Ed-s次生油藏的生油岩,此外Ef~4也有自生自储的油藏。Ef~2泥岩普遍含有β-胡萝卜烷,Ef~2泥岩较Ef~4泥岩含更多的伽马蜡烷,具有更高的植烷优势,但4-甲基甾烷要比Ef~4泥岩少。可期待产出与Ef~2泥岩相对应的,姥鲛烷/植烷<0.5,β-胡萝卜烷和伽马蜡烷含量较高的原油。更多还原

【Abstract】 Biomarkers in Tertiary shales and oils from Subei basin were analysed by gas chromatography and gas chromatographymass spectoscopy. Correlation of biomarkers-steranes, hopanes, 4-methyl steranes , gammacerane, β-carotane, isoprenoid alkanes and methyl hopanes indicates that Ef~4 and Ef~2 shales contain abundant gammacerane and have predominance of phytane. Ef~4 shales are effective source-rock at depth of about 2750 to 3100m. Most Ef~2 shales have abundance of β-carotane and gammacerane and higher predomi- nace of phytane than Ef~4 shales, but their 4-methyl steranes content is lower. Oil from Ef~2 shale and having Pr/Ph〈0.5 and higher content of β-carotane and gammacerane can be expected.更多还原