• 责任者：Sun Yu (College of Geosciences ; Northeast Petroleum University ; Daqing 163318 ; China) ; Zhang Jinyan
• 刊名：Journal of China University of Petroleum
• 出版年：2013
• 卷期：37(4)
• 关键词：油藏 ; oil reservoirs ; 高分辨率层序地层学 ; high resolution sequence stratigraphy ; 松辽平原 ; Songliao Plain
• 页码：p.7-14
• 图表：illus., 14 refs.
• 分类号：1003
• issnNo：ISSN1673-5005
• isbnNo：CN37-1441/TE

     Based on cores, log and well-log data, evolution of all levels base-level cycles and high-resolution sequence strati-graphic model were analyzed in Fuyu oil layer of the southern Fuxin Uplift. The results show that one long-term, four middle-term and thirteen short-term base-level cycles were classified. Strata thickness is controlled by the inherited palaeo-uplift and it appears stepped thinning toward the basin. Base-level mainly experienced four stages： the early rising slowly stage, the middle rising quickly stage, the middle and later rising slowly stage, the end rising quickly and falling slightly stage. Fuyu oil layer has developed into high-energy fluvial-dominated delta plain, low-energy fluvial-dominated delta plain, coastal depo- sition area of fluvial-dominated delta plain and delta front to pro-delta deposition during those four stages. The bottom of Fuyu oil layer is a turnaround surface of long term base-level falling to base-level rise. Its A/S is far less than 1. The geometry of sandbody is maily multi-layered. With the base level rising, A/S and the preservation degree of original landscape elements increase gradually. This is the reason why channel deposit is mainly lateral accretion, and the sandbody is isolaled. The ear-ly rising hemicycle of non-symmetry middle-term base-level cycle deepening upward mainly forms thick distributary channels, which constitutes the main reservoir sandbodies of Fuyu oil layer.