phan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2">Sources and Geological Significance of 3He/4He Ratios of Crude Oils from the Huangshatuo Oilfield in
详细信息
- 责任者：Song Chengpeng (Graduate University of the Chinese Academy of Sciences ; Beijing 100049 ; China) ; Zhang Xiaobao
- 刊名：Acta Geoscientica Sinica
- 出版年：2009
- 卷期：30(2)
- 关键词：原油 ; crude oil ; 氦同位素 ; helium isotopes ; 辽河平原 ; Liaohe Plain
- 页码：p.221-226
- 图表：2 illus., 1 table, 26 refs.
- 分类号：1003
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Based on analyses of He, Ne and Ar isotopes of crude oil samples from the Liaohe Basin, the authors have reached the following conclusions: 1）the 3He/4He(Rc) values of the crude oil samples in the study area are distributed in the range of 2.61×10-6-3 .50×10-6, with an average of 3.06×10-6 and in an order of 10-6, showing characteristics of the mantle-derived H elium input, whereas the percentages of the mantle-derived helium are distributed between 20.13% and 30.24%, showing the existence of deep faults that cut into the mantle in the study area； 2）the geothermal flow values calculated based on 3He/4He ratios range from 75.3 to 77.3 mW/m2, with an average of 6.4 mW/m2, which is higher than the average values of the basins in central and western China, and such a condition is beneficial for the generation of hydrocarbon； 3）the above results show that the application of the research method of 3He/4He values in crude oil can provide much information for inferring the sources of natural gas and oil, the tectonic backgrounds and the geothermal flow values.
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