Characteristics of Gas Formatted from Sinian to Lower Paleozoic in Weiyuan Area of Sichuan Basin, China
详细信息
- 责任者：Sun Wei (College of Earth Sciences ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Liu Shugen
- 刊名：Journal of Chengdu University of Technology
- 出版年：2010
- 卷期：37(5)
- 关键词：气藏 ; gas reservoirs ; 油气藏形成 ; reservoir formation ; 四川盆地 ; Sichuan Basin
- 页码：p.481-489
- 图表：4 illus., 4 tables, 16 refs.
- 分类号：1003
- issnNo：ISSN1671-9727
- isbnNo：CN51-1634/N
摘要
The Weiyuan gas field in Sichuan Basin is the only place,where the gas pools and gas wells were found in Dengying Formation of Sinian and Baota Formation of Ordovician.By comparing the components of the natural gas from Sinian,Cambrian and Ordovician in the Weiyuan gas field,the paper finds that there are differences between the natural gas from Sinian-Cambrian and that from Ordovician,and also reveals that there are two different resource rock systems.The main resource of the former is the resource rock of Lower Silurian and the later is mainly from the resource rock of Lower Cambrian.This is relevant with the former distribution of paleo-oil pools and the late regulation of tectonic uplifting,both of which are the key factors for restraining the gas accumulation of Sinian.All these reveal how rigorous and complicated to explore the gas accumulation of Sinian and Lower Palaeozoic(lower association)is in Sichuan Basin.