中国石油勘探 ›› 2008, Vol. 13 ›› Issue (6): 26-32,80.

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东濮凹陷北东向断裂系形成机制与油气关系

樊满仓   

  • 出版日期:2008-12-15 发布日期:2008-12-15

Development and Hydrocarbon Relationship of NE Rift System in Dongpu Sag

Fan Mancang   

  • Online:2008-12-15 Published:2008-12-15

摘要: 东濮凹陷由于构造运动,由简单的单断凹陷演变成为中隆两洼一斜坡构造格局,所产生的不同断裂系相互交织切割,区内主要是北东向张性断裂系,它具有雁行排列、渐变性、分区性、与正向构造相伴生以及发育在砂岩体边缘的分布规律。它的形成与区域张扭作用、构造变动方式、岩性因素以及应力条件的互换、构造背景和边界条件等有关,北东向断层具有切割、改造构造的作用,使区内构造和油气成藏更趋复杂化,加大了油气勘探的难度。

关键词: 东濮凹陷, 断裂系统, 构造变动, 构造背景, 油气关系

Abstract: The single fault depression of Dongpu Basin evolves into median fold with two low-lying lands and slope because of the structural movement, and the generated different rift systems interlace and cut mutually. North-East (NE) tensional rift systems with echelon, gradual change, partition characteristics mainly developed in the area. The system is with the rule that it coexists with positive structures and it grows at the sand body's brim, also its generation is related with regional tenso shear function, structural event style, lithologic factor, interconversion of the stress condition, structural setting and boundary condition, so the structures and hydrocarbon accumulation get more complicated and the exploration for oil and gas becomes more difficult in the area.

Key words: Dongpu sag, rift system, structural movement, structural setting, hydrocarbon relationship

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