Genetic Origin of Natural Gas and Its Filling History in Dinan Uplift-Wucaiwan of Junggar Basin
详细信息
- 责任者：Zhao Mengjun (Research Institute of Petroleum Exploration and Development ; PetroChina ; Beijing 100083 ; China) ; Wang Xulong
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(4)
- 关键词：成藏动力学 ; pool-forming dynamics ; 准噶尔盆地 ; Junggar Basin
- 页码：p.595-601
- 图表：8 illus., 28 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
Generally, the time of natural gas accumulation is late. But the filling history of the Carboniferous natural gas in the Dinan uplift-Wucaiwan of Junggar Basin gives a special sample. Natural gas has low dryness coefficient of 0.92 and N2 content of 3.04%, but the δ13C1 value of -32.12‰ indicates that natural gas would be at the highly mature stage. By means of genetic origin of natural gas and recovery of filling history, the authors consider that natural gas was formed at early stage but accumulate at late stage in the Dinan uplift-Wucaiwan of Junggar basin. There are three stages of gas accumulation, including late Hercynian, late Indo-Chinese and middle Yanshan, but the Yanshan is the main stage of gas accumulation. At Yanshan Era, natural gas was derived from the Carboniferous source rock with thermal maturity of 0.8%~1.2%RO, causing methane enriched in 13C.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |