- 责任者：Zhang Dazhi (Research Institute of Petroleum Exploration and Development ; PetroChina ; Beijing 100083 ; China) ; Ji Youliang
- 刊名：Geology in China
- 出版年：2009
- 卷期：36(2)
- 关键词：三角洲环境 ; deltaic environment ; 碎屑岩储集层 ; clastic reservoirs ; 河北 ; Hebei Province
- 页码：p.344-354
- 图表：8 illus., 3 tables, 14 refs.
- 分类号：0803
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
The Shahejie Formation in Raoyang Sag mainly comprises a set of terrigenous clastics such as conglomerate, conglomeratic sandstone, sandstone, siltstone and mudstone. A study of sedimentary characteristics led to the recognition of typical braided river delta deposition, whose characteristics are distinct and significantly different from other types of deltas resulting from river tractive current sedimentation which are generally controlled by torrential flood and seem to be seasonal sediments. According to lithologic characteristics, sedimentary structure, grain size and sedimentary sequence of the braided river delta, a sedimentary model for the braided river delta was established. From lithologic characteristics of deposition, it is thought that the thickly-bedded conglomerate and conglomeratic sandstone developed in the braided river delta are widely distributed and constitute favorable oil and gas reservoirs.