石油实验地质2011，Vol.33Issue(2)：182-187,192,7.
正构烷烃分布模式判断柴西主力烃源岩
Identification of chief hydrocarbon source rocks based on n-alkane distribution patterns in western Qaidam Basin
摘要
Abstract
The n-alkane distribution of crude oils from the western Qaidam Basin is characterized by even-to-odd (C18-C28) predominance. Source rocks from the region are mainly characterized by odd-toeven predominance. Based on n-alkane distribution pattern, combined with single molecule carbon isotope analysis, comparing crude oil with source rock, it was discussed in this paper the main source rocks in the western Qaidam Basin. The correlation of n-alkane distribution and single molecule carbon isotope analysis illustrated that the chief hydrocarbon source layer was E23 and the secondary layers were E1+2 and E31 in deep region. Meanwhile, the chief hydrocarbon source layer was N1 and the secondary layer was N2 in shallow region. Hydrocarbon potential analysis showed that those samples with even-to-odd (C18-C28) predominance possessed higher TOC, bitumen "A", total hydrocarbon content and conversion ratio, displaying huge hydrocarbon generating potential.关键词
偶奇优势/单体烃碳同位素/正构烷烃/烃源岩/第三系/柴达木盆地西部Key words
even-to-odd predominance/ single molecule carbon isotope/ n-alkane/ hydrocarbon source rocks/ Tertiary/ western Qaidam Basin分类
能源科技引用本文复制引用
宋振响,周世新,穆亚蓬,陈昭..正构烷烃分布模式判断柴西主力烃源岩[J].石油实验地质,2011,33(2):182-187,192,7.基金项目
国家自然科学基金项目(40572088)和中国科学院知识创新工程重要方向项目(KZCX2-YW-Q05-03-05). （40572088）
