【摘要】 关于惠民凹陷临南洼陷下第三系烃源岩的生烃门限 ,前人有不同的认识。该文运用干酪根光学参数、热解参数、烃类组成和生物标志化合物参数和近 2 0种地球化学指标 ,对其进行了较深入的研究 ,确定的该区烃源岩生烃门限深度为 2 5 0 0m ,埋深 30 0 0～ 4 2 0 0m为生烃高峰阶段。该区烃源岩演化可划分为未成熟、低成熟、成熟和高成熟4个阶段。更多还原

【Abstract】 The predecessors had various knowledge about the hydrocarbongenerating threshold of the source rocks in Palaeogene of Linnan subsag in Huimin sag. A thorough study on it has been made using optical kerogen parameter, pyrolytic parameter, hydrocarbon constituent and biomarker parameters and nearly 20 geochemical indexes. The hydrocarbongenerating threshold depth in this area is 2500m, the peak of hydrocarbon generation is at the depth of 3000～4200m. Evolution of the source rocks in this area may be divided into four stages of immature, low mature, mature and high mature.更多还原