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天然气地球科学

• 天然气地球化学 • 上一篇    

塔里木盆地哈拉哈塘凹陷奥陶系原油C5—C7轻烃全二维气相色谱与常规色谱对比分析

王亚鹏，常象春，程斌，师生宝   

  1. 1.山东科技大学沉积成矿作用与沉积矿产山东省重点实验室，山东  青岛 266590；
    2.中国石油大学(北京)油气资源与探测国家重点实验室，北京 102249
  • 收稿日期:2014-12-22 修回日期:2015-03-11 出版日期:2015-09-10 发布日期:2015-09-10
  • 通讯作者: 常象春(1974-)，男，陕西绥德人，教授，博士，主要从事油气地质与地球化学研究. E-mail:xcchang@sina.com.
  • 作者简介:王亚鹏(1990-)，男，山东东营人，硕士研究生，主要从事油气地球化学研究. E-mail:wangyapeng91@163.com.
  • 基金资助:

    国家自然科学基金项目(编号:41272139)；山东省自然科学杰出青年基金项目(编号:JQ201311)；山东科技大学科技计划项目(编号:2012KYJQ101)联合资助.

Comparison of C5-C7 Light Hydrocarbons in Halahatang Ordovi-cian Oil Analyzed by Comprehensive 2-D and Conventional Gas Chromatography

WANG Ya-peng，CHANG Xiang-chun，CHENG Bin，SHI Sheng-bao   

  1. 1.Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals,Shandong University
    of Science and Technology,Qingdao 266590,China;2.State Key Laboratory of Petroleum Resources and Prospecting,
    China University of Petroleum,Beijing 102249,China
  • Received:2014-12-22 Revised:2015-03-11 Online:2015-09-10 Published:2015-09-10

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摘要：

对塔里木盆地哈拉哈塘凹陷11个奥陶系原油样品进行了全二维色谱和常规气相色谱对比分析，研究结果表明哈拉哈塘原油反映了成熟—高成熟特征，属于典型海相原油，其源岩沉积于微咸—咸水还原环境，母源类型一致。相对于一维气相色谱，全二维色谱所求庚烷值和异庚烷值降低、C7轻烃中链烷烃相对含量下降，而环烷烃相对含量上升。C6轻烃和Mango参数对比良好。由于原油直接进样分析不存在前处理过程，加上较高的分离能力，原油全二维直接进样分析结果反映了更为准确的地质信息。

关键词: 全二维色谱, 常规色谱, C5&mdash, C7轻烃, 哈拉哈塘凹陷, 原油

Abstract:

Eleven Ordovician oil samples from Halahatang Depression were investigated by 2-D gas chromatography(GC×GC)and conventional gas chromatography to contrast their C5-C7 light hydrocarbons compositions.The results indicate that Halahatang oils are typical mature-high mature marine oils,deposited in a brackish-salty reducing environment with similar source input.The C6 light hydrocarbon and Mango parameters obtained from the conventional gas chromatography correlate well with those from the GC×GC,however,the C7 light hydrocarbon from the GC×GC is characterized by lower heptane and isoheptane values,decrease of paraffin and increase of cycloalkane abundance.Due to no need for pretreatment,oil direct injection for the GC×GC can provide more real information associated with its higher separation.

Key words: GC×GC, Conventional gas chromatography, C5-C7 light hydrocarbon, Halahatang Depression, Crude oil

中图分类号: 

  • TE122.1+13

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