Sequence Stratigraphy Characteristics and Filling Evolution Models of Paleogene in Baiju Sag, Subei Basin
详细信息
- 责任者：Wei Xiangfeng (Institute of Resources and Environment ; Southwest Petroleum University ; Chengdu 610500 ; China) ; Zhang Tingshan
- 刊名：Acta Geoscientica Sinica
- 出版年：2011
- 卷期：32(4)
- 关键词：古近纪 ; Paleogene ; 层序地层学 ; sequence stratigraphy ; 苏北盆地 ; Subei Basin
- 页码：p.427-437
- 图表：9 illus., 1 table, 31 refs.
- 分类号：1200
- 出版序号：1128
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Based on the identification features of stratigraphic sequences of the continental faulted basin along electric logging curves and seismic profiles as well as the characteristics of lithologic combination and palaeontological data, the authors identified six Paleogene sequence boundaries in Baiju sag of Subei basin and divided the Paleogene into one super sequence group, two super sequences, and five sequences. A preliminary analysis was made on the relationship between sequence stratigraphic filling evolution models and oil-gas exploration potentials, which reveals that the configuration relationship between sand bodies in lowstand and highstand systems tracts and hydrocarbon source rock in lacustrine transgressive system tract of faulting-depression stage of the faulting episodeⅠ is the best in that it has the most advantageous hydrocarbon accumulation condition.