Sedimentary Facies and Planar Distribution of Yuejin No.2 Oil Reservoir in
- 责任者：Ye Ping (Geoscience Department of Yangtze University ; Jingzhou 434023 ; China) ; Yin Taiju
- 刊名：Northwestern Geology
- 出版年：2010
- 卷期：43(1)
- 关键词：沉积相 ; sedimentary facies ; 砂体 ; sand bodies ; 柴达木盆地 ; Qaidam Basin
- 页码：p.115-123
- 图表：7 illus., 16 refs.
- 分类号：1003
- issnNo：ISSN1009-6248
- isbnNo：CN61-1149/P
Yuejin No.2 oil reservoir includes three main oil groups: Xiayoushashan Formation (N21), Shangganchaigou Formation (N1), and the lower part of Xiaganchaigou Formation (E31). In the period of main oil groups deposition, the basin is with shallow water, during the water flowing into the lake in advance, kinetic energy of flowing water is strong, diverting rivers play the role of transmission, resulting in a weak sedimentation; while the region among distributary channels with weak water energy has a strong sedimentation, creating a dam to divert sand deposition as mainly sedimentary characteristics. This depositional model broke the traditional delta sedimentary facies model dominated by river and dam and established a new sedimentary microfacies model of a potato-shaped diversion dam spreading in the river.