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鄂尔多斯盆地延长组烃源岩中单甲基烷烃来源及意义

钱宇 王作栋 妥进才 张婷 贺永红

钱宇, 王作栋, 妥进才, 张婷, 贺永红. 鄂尔多斯盆地延长组烃源岩中单甲基烷烃来源及意义[J]. 石油实验地质, 2017, 39(1): 86-93. doi: 10.11781/sysydz201701086
引用本文: 钱宇, 王作栋, 妥进才, 张婷, 贺永红. 鄂尔多斯盆地延长组烃源岩中单甲基烷烃来源及意义[J]. 石油实验地质, 2017, 39(1): 86-93. doi: 10.11781/sysydz201701086
Qian Yu, Wang Zuodong, Tuo Jincai, Zhang Ting, He Yonghong. Origin and significance of monomethylalkanes from Yanchang Formation source rocks in Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(1): 86-93. doi: 10.11781/sysydz201701086
Citation: Qian Yu, Wang Zuodong, Tuo Jincai, Zhang Ting, He Yonghong. Origin and significance of monomethylalkanes from Yanchang Formation source rocks in Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(1): 86-93. doi: 10.11781/sysydz201701086

鄂尔多斯盆地延长组烃源岩中单甲基烷烃来源及意义

doi: 10.11781/sysydz201701086
基金项目: 国家自然科学基金(41602151,41672127)和兰州油气资源研究中心“十三五”创新基金(135CCJJ20160523)资助。
详细信息
    作者简介:

    钱宇(1988-),男,博士研究生,从事油气地球化学研究。E-mail:qianyu1001@sina.com。

    通讯作者:

    王作栋(1966-),男,高级工程师,从事油气地球化学研究。E-mail:wangzuo_dong@163.com。

  • 中图分类号: TE122.113

Origin and significance of monomethylalkanes from Yanchang Formation source rocks in Ordos Basin

  • 摘要: 单甲基烷烃是湖相烃源岩饱和烃中常见的支链烷烃,其母质来源的研究一直存在争议。对鄂尔多斯盆地上三叠统延长组烃源岩样品进行了TOC测定、岩石热解、饱和烃GC-MS和单体碳同位素等分析,并在饱和烃中检出了丰富的单甲基烷烃化合物。地化分析表明,该区长7-长10烃源岩的有机质类型为Ⅱ-Ⅲ型,C29≥C27规则甾烷,高等植物的贡献略微大于低等水生藻类或细菌;单甲基烷烃碳数分布为C12-C32,甲基取代位置以C2和C3为主。饱和烃单体碳同位素组成数据显示,姥鲛烷和植烷的δ13C比同碳数正构烷烃重1‰~2‰;同碳数2-和3-甲基烷烃具有相近的碳同位素组成,表明两类化合物具有相同物源;单甲基烷烃比正构烷烃更富集13C,表现出更大的δ13C值。结合古环境等信息表明,鄂尔多斯盆地检出的单甲基烷烃可能来自于浮游植物或者异养细菌,单甲基烷烃可以作为一种指示生油母质的生物标志化合物。

     

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出版历程
  • 收稿日期:  2016-06-01
  • 修回日期:  2016-11-30
  • 刊出日期:  2017-01-28

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