Characteristics of Natural Gas Sources and Accumulation in Dibei Uplift of Junggar Basin
详细信息
- 责任者：Chen Shijia (Southwest Petroleum University ; Chengdu 610500 ; China) ; Chen Xue
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(1)
- 关键词：天然气 ; natural gas ; 油—源对比 ; oil-source rock correlation ; 准噶尔盆地 ; Junggar Basin
- 页码：p.97-101
- 图表：7 illus., 3 tables, 8 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
The large-scale gasfield is discovered in the Dinan uplift-the south of Dishuiquan depression in central Junggar Basin. Recently, small-scale gas reservoirs have been found in Jurassic and Carboniferous strata, but no greater breakthrough has been made. It is still unclear about the origin of the natural gas of the Dibei uplift. By comparing with carbon isotope of natural gas and reservoir extraction of gas intervals, it is showed that the geochemical characteristics of natural gas in Dibei and Dinan uplift has significant differences, and natural gas of Dibei uplift is similar with that from typical Carboniferous sources in the eastern part of the basin. Consequently, the natural gas should be sourced from Wulungu depression whose geochemical characteristics of rocks in Carboniferous are similar with Dibei uplift. Based on the characteristics of fluid inclusions, it is concluded that the gas is accumulated at late stage of Late Cretaceous.
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