Cenozoic Basin Structure in the Dongying Sag and Its Control over Reservoir
详细信息
- 责任者：Xue Yan (School of Geosciences ; China University of Petroleum ; Qingdao 266555 ; China) ; Wu Zhiping
- 刊名：Geotectonica et Metallogenia
- 出版年：2013
- 卷期：37(2)
- 关键词：油气藏形成 ; reservoir formation ; 盆地演化 ; basin evolution ; 东营凹陷 ; Dongying Sag
- 页码：p.206-212
- 图表：illus., 20 refs.
- 分类号：1003
- issnNo：ISSN1001-1552
- isbnNo：CN44-1595/P
摘要
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.
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