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泥质烃源岩中粘土矿物结合有机质热演化的红外发射光谱研究

卢龙飞 蔡进功 刘文汇 腾格尔 胡文瑄

卢龙飞, 蔡进功, 刘文汇, 腾格尔, 胡文瑄. 泥质烃源岩中粘土矿物结合有机质热演化的红外发射光谱研究[J]. 石油实验地质, 2012, 34(2): 215-222. doi: 10.11781/sysydz201202215
引用本文: 卢龙飞, 蔡进功, 刘文汇, 腾格尔, 胡文瑄. 泥质烃源岩中粘土矿物结合有机质热演化的红外发射光谱研究[J]. 石油实验地质, 2012, 34(2): 215-222. doi: 10.11781/sysydz201202215
Lu Longfei, Cai Jingong, Liu Wenhui, Tenger, Hu Wenxuan. Infra-red emission spectroscopy study of thermal evolution of organic matter bound by clay minerals in muddy hydrocarbon source rocks[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2012, 34(2): 215-222. doi: 10.11781/sysydz201202215
Citation: Lu Longfei, Cai Jingong, Liu Wenhui, Tenger, Hu Wenxuan. Infra-red emission spectroscopy study of thermal evolution of organic matter bound by clay minerals in muddy hydrocarbon source rocks[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2012, 34(2): 215-222. doi: 10.11781/sysydz201202215

泥质烃源岩中粘土矿物结合有机质热演化的红外发射光谱研究

doi: 10.11781/sysydz201202215
基金项目: 中国自然科学基金(40872089);国家油气重大专项(2008ZX05006-003);中国博士后科学基金(20100480496);国家留学基金资助
详细信息
    作者简介:

    卢龙飞(1977- ),男,在站博士后,从事油气地球化学研究.E-mail:lulf.syky@sinopec.com.

  • 中图分类号: TE122.11

Infra-red emission spectroscopy study of thermal evolution of organic matter bound by clay minerals in muddy hydrocarbon source rocks

  • 摘要: 选取济阳坳陷古近系渐新统沙河街组泥质烃源岩,进行小于2μm的粘土组分提取,运用红外发射光谱技术研究粘土矿物结合有机质的热演化过程和有机-粘土相互作用对有机质热演化过程的影响.结果显示,代表脂肪链结构的甲基、亚甲基振动吸收峰随着温度的升高,强度逐渐降低,烷基链由于受到粘土保护而晚于支链分解;代表芳香结构的芳环的振动吸收峰强度变化较为复杂,798,779,750cm-1等峰随温度升高而减弱,而1600cm-1和3030cm-1峰则在200℃左右才出现并不断增强,随后慢慢减弱,且芳香度指数一直增加,显示出明显的芳构化过程.同时,粘土矿物层间水合阳离子通过"水桥"机制将含羧基的有机分子结合起来,对其演化有抑制作用.红外发射光谱研究揭示出粘土矿物结合的有机质主要通过脂肪族化合物的芳构化转化实现生烃的演化特征,是烃源岩热演化研究的有效手段.

     

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出版历程
  • 收稿日期:  2011-07-25
  • 修回日期:  2012-02-27
  • 刊出日期:  2012-03-28

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