Carbon and Hydrogen Isotopic Composition of Individual N-Alkanes for Crude Oil from North Margin of Qaidam Basin
详细信息
- 责任者：Zhang Mingfeng (Key Laboratory of Petroleum Resources Research ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Tuo Jincai
- 刊名：Acta Sedimentologica Sinica
- 出版年：2012
- 卷期：30(5)
- 关键词：原油 ; crude oil ; 碳同位素 ; carbon isotopes ; 氢同位素 ; hydrogen isotopes ; 东海 ; East China Sea
- 页码：p.983-990
- 图表：illus., 24 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
Using GC/C/MS on-line carbon isotope analysis technique,the authors obtained the carbon and hydrogen isotopic composition of individual n-alkanes for crude oil from different tectonic belts of the north margin of Qaidam Basin.The carbon and hydrogen isotopic composition of n-alkanes for crude oil samples can be used to analyze genetic type of crude oil and oil-source correlation.Through comparing,it is found that there exist significant differences between the carbon and hydrogen isotopic composition of n-alkanes for crude oil from different tectonic belts. By the combination of δ13C n-alkanes (-30‰),δD n-alkanes (-140‰), and distribution pattern isotopic curve,the carbon and hydrogen isotopic composition can be divided into different distribution patterns.Using these patterns can discriminate hydrocarbon generation material and sedimentary environment.