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在密集取样分析并结合前人分析化验资料的基础上,建立苏北盆地高邮凹陷泰州组烃源岩地球化学剖面,对烃源岩进行综合评价,并用成因法对泰州组资源量进行预测。研究表明高邮凹陷泰州组二段中上部的暗色泥岩对油气成藏作用不大;泰州组二段底部的“六尖峰”段泥岩、泥灰岩有机碳平均为1.54%,干酪根为Ⅰ型和Ⅱ1型,处于低成熟—成熟阶段,为一套优质烃源岩;高邮凹陷剩余地质储量、可采储量分别为4254×104t、1293×104t,具有一定的勘探前景。
Based on the intensive sampling and analysis combined with the previous analysis of laboratory data, the geochemical profile of source rocks of Taizhou Formation in Gaoyou Sag of Subei Basin was established and the source rocks were comprehensively evaluated. The genetic resources of Taizhou Formation were predicted by genetic algorithm. The study shows that the dark mudstones in the middle and upper part of the second member of the Taizhou Formation in the Gaoyou Sag have little effect on hydrocarbon accumulation. The average organic carbon of mudstone and marl in the “Liujianfeng” section of the second member of the second member of Taizhou Formation is 1.54% and the kerogen is Ⅰ Type and type II1, which are in low maturity-maturity stage and are a set of high-quality source rocks. The remaining geological reserves and recoverable reserves in the Gaoyou Sag are 4254 × 104t and 1293 × 104t, respectively, and have certain exploration prospects.