关键词: 生物标记物, 胡萝卜烷, 苏北盆地, 伽马蜡烷, 生油岩, 生物标志物, 油源对比, 埋藏深度, 原油对比, 岩样

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 Ef⁴ and Ef² shales contain abundant gammacerane and have predominance of phytane. Ef⁴ shales are effective source-rock at depth of about 2750 to 3100m. Most Ef² shales have abundance of β-carotane and gammacerane and higher predominace of phytane than Ef⁴ shales, but their 4-methyl steranes content is lower. Oil from Ef² shale and having Pr/Ph〈0.5 and higher content of β-carotane and gammacerane can be expected.