利用岩石热解参数S2-Toc图谱分析海拉尔盆地呼和湖凹陷有机质类型及生烃潜力

岩石热解是广泛应用于研究烃源岩有机质成熟度和生烃潜力的一种分析方法。利用热解参数绘制S2-T oc图谱可有效区分研究地层的有机质类型。本文将此方法应用于海拉尔盆地呼和湖凹陷的白垩系各层系烃源岩有机质类型研究,结果表明南屯组二段为II型干酪根,大磨拐河组一段为III型干酪根;南屯组一段干酪根基本无生烃潜力。呼和湖凹陷烃源岩有机质类型为II型和III型,具有较好的油气生烃潜力。

Investigation for Petroleum Generation Potential and Type of Kerogen of Organic Rich Rocks in Huhehu Depression of Hailar Basin Using Graphs of S2 VS.Toc byrok Pyrolysis Data

Rock pyrolysis is the most widely used method for screening the petroleum generation potential and thermal maturity of source rock.Using graphs of S2 vs.Toc by rock pyrolysis data is an effective method to evaluate the properties of organic material within a sedimentary unit.This paper applies this method on the Cretaceous source rock of Huhehu depression in Hailar basin and obtains the informations on kerogen of Huhehu depression as following： the kerogen of second section of Nantun formation are type II,the kerogen of first section of Damoguahe formation is type III;the kerogen of first section of Nantun formation have less petroleum generation potential.This paper indicates that the dominant kerogen of Huhehu depression are type II and type III,have better petroleum generation potential.