Hydrocarbon Origins and Their Pooling Characteristics of the Kelameili Gas Field
详细信息
- 责任者：Yang Disheng (Exploration and Development Research Institute of Xinjiang Oilfield Company ; PetroChina ; Urumqi 830013 ; China) ; Chen Shijia
- 刊名：Natural Gas Industry
- 出版年：2012
- 卷期：32(2)
- 关键词：油气成因 ; oil-gas origin ; 成藏模式 ; pool-formed model ; 准噶尔盆地 ; Junggar Basin
- 页码：p.27-31
- 图表：illus., 3 tables, 18 refs.
- 分类号：1003
- issnNo：ISSN1000-0976
- isbnNo：CN51-1179/TE
摘要
The Kelameili Gas Field is another big discovery made in the Junggar Basin in recent years so that the study on its hydrocarbon origins and pooling characteristics is of great significance to future exploration in the whole Ludong area.A comprehensive evaluation of the source rocks of this gas field reveals that the Carboniferous source rocks in the Dishuiquan area have high organic abundance and have come to a higher mature stage,thus have a great potential of hydrocarbon generation.A comprehensive analysis of gas composition,carbon isotopes of associated crude oil,light hydrocarbons and biomarkers shows that all of the hydrocarbons in this gas field are products of humic-type organic matter at high maturity and the carbon isotopes of crude oil are getting heavier from west to east.The study of regional structural evolution indicates that a "structural low" exists on the Dinan salient and prevents the hydrocarbons generated in the Dongdaohaizi sag from migrating into and accumulating in the Carboniferous reservoirs of the Kelameili Gas Field,the hydrocarbons of which mainly come from the Carboniferous source rocks in the western Dishuiquan sag.Finally,a model for hydrocarbon migration and accumulation is established and it is pointed out that the periphery of the Dishuiquan sag has great potential for hydrocarbon exploration.