Depositional System of Chunshang Sub-Member of Member IV in Shahejie Formation in Eastern Paleogene of Dongying Sag

详细信息   

• 责任者：Zhao Wei (School of Energy Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Chen Yan
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2011
• 卷期：30(3)
• 关键词：沙河街组 ; Shahejie Formation ; 砂体 ; sand bodies ; 沉积体系 ; depositional system ; 东营凹陷 ; Dongying Sag
• 页码：p.32-38
• 图表：5 illus., 1 table, 15 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

Along with continuous and further exploration, Sha-4 Member has become the newly important oil-gas bearing horizon in Dongying Sag, and Chunshang sub-member is the formation unit in the top of Sha-4 Member characterized by a set of gray-green sand shale interbed. Through the study on multi facies marks, many sedimentary facies types have been indentified. On the basis of fine formation division, methods including source analysis, sand shale statistics and so on are used to determine the distribution range of all sedimentary systems in each sandstone group, and the evolutional history of sedimentary system has been resumed through the comparison between sandstone groups. The results show that the mainly developed sedimentation body in eastern Dongying Sag has experienced the evolutional process from taking the Guangrao uplift source control as the dominant factor in the southeast to taking the Qingtuozi uplift source control as the dominant factor in the northeast.