Internal Far Source of Secondary Gas Enrichment Regularity of the Negative Tectonic Belt
详细信息
- 责任者：Tong Kailin (State Key Laboratory of Oil and Gas Reservior Geology and Exploitition ; Chengdu 610059 ; China) ; Li Rui
- 刊名：Computing Techniques for Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：35(3)
- 关键词：隐蔽油气藏 ; subtle reservoir ; 次生油气藏 ; secondary reservoir ; 四川盆地 ; Sichuan Basin
- 页码：p.338-343
- 图表：illus., 15 refs.
- 分类号：1003
- issnNo：ISSN1001-1749
- isbnNo：CN51-1242/P
摘要
Negative structural belt is one of the key areas of hidden reservoir exploration.Depression contains abundant hydrocarbon resources.But it is difficult for exploration due to the geological characters of low structural position,deep buried reservoir and complex accumulation types.In this paper,through analyzing structural features,distribution in the reservoir,reservoir-forming conditions,regularities of distribution and other aspects of Penglaizhen formation in western Sichuan-Deyang,we make an in-depth evaluation on hydrocarbon enrich major control factors and its regularities of distribution of this negative structural belt,thus making a conclusion that hidden reservoir in negative structural belt is controlled by porosity sand body which connects to or is adjacent to source rock fault,by effective lithologic trap,by boundary fault of communication source rocks,and by paleostructual position where lithologic trap has stayed during accumulation stages.These points of views held in this paper possess important significance in electing advantageous exploratory area in negative structural belt in western Sichuan depression and in identifying potential exploration targets.
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