成藏条件研究表明，德南洼陷下第三系生油岩成熟度低，主力生油层在洼陷深部进入生烃门限，德南洼陷是一个低熟油灶。
By studying the material conditions of entrapment, it is conclude that De Nan depression is a low-mature oil kitchen, that main source rock of Sha San member is partly mature.
黄河南地区的油气主要来自邻近的前梨园、葛岗集和崮阳3个洼陷的沙河街组三段和四段生油岩。
Hydrocarbon in South Yellow River Region are derived from Sha 3 ~ 4 member source rocks of the neighbouring front Liyuan, Gegangji and Guyang Sags.
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