Sequence Stratigraphic Characteristics and Hydrocarbon Prospect of Mesozoic Formation in Suibin Depression, Sanjiang Basin

详细信息   

• 责任者：Guo Shaobin（School of Energy Resources ; China University of Geosciences ; Beijing 100083 ; China） ; Wang Hongliang
• 刊名：Petroleum Exploration and Development
• 出版年：2008
• 卷期：35(1)
• 关键词：油气勘探 ; petroleum exploration ; 层序地层学 ; sequence stratigraphy ; 三江平原 ; Sanjing Plain
• 页码：p.44-51
• 图表：9 illus., 1 table, 9 refs.
• 分类号：1003
• issnNo：ISSN1000-0747
• isbnNo：CN11-2360/TE

摘要

According to the detailed analysis of drilling data, together with the interpretation of seismic section, the Mesozoic of Suibin Depression is divided into four second-order sequences and eight third-order sequences. The third-order sequences at the bottom of the second-order sequences develop low-stand systems tracts (LSTs), and the other sequences do not. The analysis result of the balanced section and Milankovitch cycle indicates that the Mesozoic sequences above third-order in the Suibin Depression are mainly controlled by structure, and that the Milankovitch cycle only controls high frequency sequences (systems tracts). Base on the above analyses, the second-order sequence stratigraphy model of the Mesozoic of Suibin Depression is established. The model is of typical tripartition, the early basin fill (LST), the middle basin expansion (TST) and the late basin abortion (HST). The transgressive systems tracts (TSTs) overlying the LSTs in the second-order sequences may be good seal and source rock, so the LSTs have the potential for oil and gas.