【摘要】 利用工区参数井(哲参2井)样品分析化验资料,对茫汉断陷烃源岩的地球化学特征进行了定量研究,对其生烃能力进行了综合评价,并应用地震反演技术对茫汉断陷烃源岩空间分布进行了预测。研究表明,茫汉断陷烃源岩为半深湖、深湖相泥岩,有机质丰度指标高,干酪根类型以Ⅱ型为主,烃源岩有机质已成熟并进入生油门限,具有较强的生烃能力。地震反演揭示烃源岩在茫汉断陷分布范围广,凹陷中心厚度可达300 m以上,具有一定的规模,因此茫汉断陷具有较好的勘探前景,毗邻生油中心的有效圈闭是茫汉断陷最有利的目标勘探区。更多还原

【Abstract】 In order to determine the exploration prospect of Manghan Depression in Kailu Basin,the geochemical behavior of its source rock is quantitatively examined by sample analysis data from Well Zhecan 2 and as a result the petroleum generation potency of the source rock is comprehensively evaluated,and finally the spatial distribution of source rock is predicted with seismic inversion.According to the research result,the source rock of Manghan Depression is pelagic and mudstone with high organic matter abundance,whose kerogen is sorted as Ⅱ-type and has become mature into petroleum generation threshold,so the source rock of Manghan Depression has a high potential of hydrocarbon generation.Seismic inversion shows that the source rock widely spreads in Manghan Depression with a thickness of 300 meter in center.So the study area has a good exploration prospect and the effective trap adjacent hydrocarbon generation zone center is the optimum exploration target area.更多还原