Geochemical Characteristics of Crude Oil and Oil-Source Correlation in Yanchang Formation (Upper Triassic) in Wubao Area, Ordos Basin
详细信息
- 责任者：Bai Yubin (School of Earth Sciences and Engineering ; Xi’an Petroleum University ; Xi’an 710065 ; China) ; Luo Jinglan
- 刊名：Acta Sedimentologica Sinica
- 出版年：2013
- 卷期：31(2)
- 关键词：原油 ; crude oil ; 油—源对比 ; oil-source rock correlation ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.374-383
- 图表：illus., 2 tables, 33 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
The oil sources in the Yanchang Formation of the Ordos Basin has always been controversial in the reservoir Chang-8 to Chang-10. According to the crude oil of Chang-6 to Chang-10 of Yanchang Formation in Wubao area,this paper discusses the physical properties,the group composition,the biomarkers,and the oil-oil and oil-source correlation in terms of their geneses and the origin of petroleum in respective reservoirs so as to provide the geological basis for the area’s petroleum exploration and prediction.The result shows that the group composition of Chang-6 to Chang-10 is characterized by the highest content of the saturated hydrocarbon,which follows the aromatics,and non-hydrocarbons are the lowest.The thermal maturity should be the most responsible for the differences between crude oil group compositions which are far away from the dominant source rocks.