The Sequence Architecture and Characteristics of Sandbody Distribution of the First Member of the Dainan Formation in Jinnan-Yaotan Block of Jinhu Depression
详细信息
- 责任者：Zang Suhua (Research Institute of Petroleum Exploration and Development ; East China Company ; SINOPEC ; Nanjing 210011 ; China) ; Hua Caixia
- 刊名：Geological Journal of China Universities
- 出版年：2013
- 卷期：19(3)
- 关键词：层序地层学 ; sequence stratigraphy ; 砂体 ; sand bodies ; 江苏 ; Jiangsu Province
- 页码：p.536-543
- 图表：7 illus., 12 refs.
- 分类号：1003
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
By using the high resolution sequence stratigraphy theory,the sequence stratigraphy for the first member of Dainan Formation in Jinnan-Yaotan block of Jinhu Depression is analyzed together with comprehensive research of seismic,core and well logging data.Two kinds of transitional surface,sequence boundary,and flooding surface are recognized.And the aimed segment is divided into one long-term cycle,two to three intermediate term cycles and four to seven short-term cycles.The main types of the short and intermediate term are upward-deepening,and upward-deepening then to upward-shallowing.The long term is upwarddeepening then to upward-shallowing.Based on the principle of isochronic correlation,the sequence stratigraphic framework of the first member of Dainan Formation is established,and the sandbodies of intermediate term cycles are tracked and correlated.The result shows that the upside of Shigang Fault and the Lvzhuang tectonic zone are loss of the MSC3,the sandbodies are mainly distributed in the west of Jinnan area and the downside of Shigang Fault,the character of stratigraphic onlap is apparent.This kind of sandbody is a very favorable target for subtle reservoir exploration.