Basing on detailed test data of the Damingtun depression, the main charging pathway of two petroleum system is reconstructed by means of hydrocarbon compositional heterogeneity.

• 运用油气组成非均质性,以大民屯凹陷丰富详实的分析测试资料为基础,“反演”了两大油气系统的油气主运聚方向。