Through the interpretation of seismic data,different types of sags with different types of structural boundary in Jiyang depression were researched on the aspects of the traps,the paths and force of oil and gas migration.Following understanding were obtained.Cenozoic hydrocarbon traps in Jiyang depression had zoning features in space and staging in time.The oil and gas in step type of steep slope boundary mainly migrated vertically along the high angle faults,and the secondary faults in chair type of steep slope boundary were benefit to the oil and gas migration.The migration of oil and gas depended on the sealing characteristics along the fault strike in listric type of steep slope boundary.As to the gentle slope boundary,the faults dipped to the basin center charged the vertical migration of oil and gas,and the uncomformities played the role of their lateral migration channel.The rapid subsidence of Jiyang depression not only produced the micro cracks in hydrocarbon source rocks,but also provided force for the oil and gas to migrate to the transport layers.%利用地震资料,从不同类型的构造边界对圈闭的形成和分布、运移通道和油气运移动力的影响等方面进行了分析,得出以下主要认识:济阳坳陷新生代油气圈闭在空间上具有分带性,在时间上具有分期性.阶梯式陡坡边界油气主要沿高角度断层作垂向运移,座椅式陡坡边界主要靠主干断层上盘发育的次级调节性断层疏导油气,铲式陡坡边界的油气运移主要受断层在不同地段的差异封闭性控制,缓坡带盆倾断层控制油气的垂向运移,不整合面作为主要的横向运移通道.济阳坳陷快速构造沉降形成的地层超压不但使烃源岩产生微裂缝,而且为油气通过微裂缝排驱到输导层中提供了动力.
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