塔里木盆地群5井和曲1井原油的油源研究——脂肪酸及烷基环己烷系列化合物提供的新证据

段毅; 周世新; 孟自芳

doi:10.11781/sysydz200104433

塔里木盆地群5井和曲1井原油的油源研究——脂肪酸及烷基环己烷系列化合物提供的新证据

doi: 10.11781/sysydz200104433

中国科学院兰州地质研究所, 甘肃, 兰州, 730000

基金项目: 中国科学院知识创新工程(KZCX2-1);“九五”国家重点科技攻关项目(96-111-01-04-02);国家自然科学基金(400072040)

详细信息

作者简介:
段毅(1956- ),男(汉族),甘肃庆阳人,博士、研究员,主要从事有机地球化学研究工作.

中图分类号: TE122.1
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出版历程
- 收稿日期: 2000-08-18
- 修回日期: 2001-03-23
- 刊出日期: 2001-10-25

STUDY ON THE OIL SOURCE OF CRUDE OILS FROM WELL QUN-5 AND WELL QU-1 IN THE TARIM BASIN-NEW EVIDENCES FROM FATTY ACIDS AND ALKYL CYCLOHEXANES SERIES COMPOUNDS

State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Academy of Science, Lanzhou 730000, China

摘要

摘要: 塔里木盆地群5井和曲1井原油中的脂肪酸主要来自母源,其组成特征反映了母质主要为菌藻类.群5井和曲1井原油含有丰富的烷基环己烷系列化合物.脂肪酸和烷基环己烷系列分布特征,在群5井和曲1井原油中差别显著,反映了它们具有不同的油源.结合原油的碳同位素、长链三环萜烷、藿烷和甾烷组成特征,认为塔里木盆地群5井原油可能来自寒武-奥陶系海相碳酸盐岩生油岩,而曲1井原油可能来自石炭系海相泥岩生油岩.
- 脂肪酸 /
- 长链烷基环己烷 /
- 原油 /
- 油源 /
- 塔里木盆地
Abstract: Oils from well Qun-5 and well Qu-1 in the Tarim Basin contain abundant fatty acids and a series of long-chain alkyl cyclohexanes.The compositions of fatty acids are in the range of C₁₀-C₂₆,and exhibit a model distribution with maximum at C₁₆ for oil from well Qun-5 and at C 15 for oil from well Qu-1.Studied data show that these fatty acids come mainly from their source rocks and are derived from algae and bacteria.The compositions of long-chain alkyl cyclohexanes are in the range of C₁₂-C₃₂.They contain a model distribution with maximum at C₁₃ for oil from well Qun-5 and bimodel distributions with maxima at C₁₄,C₁₅ or C₁₉.Significant differences in the distributions of fatty acids and long-chain alkyl cyclohexanes in oils from well Qun-5 and well Qu-1 indicatethat these oils have different oil sources.Together with the features of compositions of carbon isotopes,long-chain tricyclic terpanes,hopanes and steranes,it is suggested that oil from well Qun-5 originate from Cambrian-Ordovician marine carbonate source rock and oil from well Qu-1 originate from Carboniferous marine mudstone source rock.
- fatty acid /
- long-chain alkyl cyclohexane /
- crude oil /
- the Tarim Basin /

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参考文献(12)

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