【摘要】 盆地结构的时空演化过程对油气的生成、运聚及成藏具有重要的控制作用。本文在大量地震及岩性资料基础上,分析了控盆断裂体系特征,讨论了东营凹陷新生代各构造阶段盆地结构的演化特征,并就东营凹陷不同结构单元的构造特征、油气成藏条件以及油气分布规律进行了对比。结果表明:受断裂体系发育与演化的控制,东营凹陷新生代以来的盆地结构发生了由"北东断西南超"至"北(西)断南(东)超"的转变;不同盆地结构单元的油气成藏条件及油气分布规律存在差异:陡坡带的油气富集与滚动背斜、断鼻构造及砂砾岩体的发育有关,缓坡带油气分布主要受控于大型鼻状构造背景,洼陷带的油气富集与浊积岩砂体有关,中央隆起带的长轴伸展方向是有利的油气成藏区。更多还原

【Abstract】 The spatial-temporal evolution of the basin structures plays important roles in controlling the generation,migration and accumulation of hydrocarbon. Based on the analysis of the large amounts of seismic data and lithological materials,the features and evolution of the controlling fault systems in different tectonic stages were discussed.In addition,the structural characteristics,reservoir-forming conditions and distribution of different structural units were compared. The results showed that the basin structure of Dongying Sag changed in Cenozoic which was controlled by the development and evolution of the fault system. In the early phase,it exhibited northeast faulting,southwest overlapping feature. Later,it turned to a north faulting,south overlapping structure. Besides,reservoirforming conditions and distribution of different structural units also changed. Hydrocarbon accumulation of abrupt slope belt was related to the development of rolling anticline,fault nose and sandy conglomeratic body and that of gentle slope belt was mainly controlled by the development of large rolling anticline,while the hydrocarbon accumulation of sag belt was related to turbidity sand body. And the possible favorable reservoir forming area is along the long axle of the central anticline belt.更多还原