Abstract Based on the identification features of continental stratigraphic sequences on seismic profiles and wire line logs, the characteristics of lithologic combination and palaeontology, the Paleogene in the Raoyang Sag is divided into three second order sequences and ten third order sequences. Third order sequences Ⅰand Ⅱ are lacustrine sequences developed in the initial rifting phase of basin formation, while sequences Ⅲ,Ⅳ,Ⅴ,Ⅵ and Ⅶ are lacustrine sequences developed in the strong rifting phase, and sequences Ⅷ,Ⅸ and Ⅹ are fluvial sequences. Lacustrine sequences can be divided into three system tracts: low stand, transgressive and high stand system tracts. Fluvial sequences can be divided into base level rising and base level falling system tracts. Based on the identification and correlation of sequence stratigraphic units, sequence stratigraphic models of the target strata in the study area are established according to the characteristics of the stratigraphic sequences, the tectonic evolution history and paleontography reflected by the variation of strata thickness. A preliminary analysis is made on the relationship between sequence stratigraphic models and oil gas exploration potentials, and the stratigraphic oil pools in each sequences are predicted/
About author: Ji Youliang, born in October, 1962, got his doctoral degree from Petroleum University (Beijing) in 1991. Now he is a professor in Tongji University, and a vice director of Key Lab of Reservoir of CNPC, and is mainly engaged in sedimentology, petroleum geology and sequence stratigraphy.
Cite this article:
Ji Youliang,Du Jinhu,Zhao Xianzheng et al. Sequence stratigraphy and evolution models of the Paleogene in Raoyang Sag, Jizhong Depression[J]. JOPC, 2006, 8(3): 397-406.
Ji Youliang,Du Jinhu,Zhao Xianzheng et al. Sequence stratigraphy and evolution models of the Paleogene in Raoyang Sag, Jizhong Depression[J]. JOPC, 2006, 8(3): 397-406.
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