2017年6月罐E集96集
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI;10.3969/J.ISSN. 1000-3754.2017.03. 030
含油页岩不同极性试剂连续抽提物
饱和烃组成特征陈小慧1,2张敏1,2
LIoz gunr Vol. 36 No. 3
（1.长江大学教育部油气资票与勘探技术实验室，湖北武汉430100；2.长江大学资源与环境学院，朝北武汉430100）摘要：页岩中不同赋存状态原油的分离成为当前较为关注的间题。采用极性逐渐增强的正已烷、二氧甲烷和三氯甲烷对祁连山木里煤田钻孔的含油页岩样品进行连续抽提，对各抽提物分别做族组分和定量色谱一质谱分析。研究结果表明：正已烷冷浸泡抽提物主要为更岩内自由态烃类，以饱和烃为主；而三氯甲烷索氏抽提物则主要为吸附态烃类，其中极性组分含量高，且碳数较高的正构烷烃丰度高；随溶剂板性的增加，连续抽提物生标参数Czgααα笛烷20S/（20S+20R）与Cz四环薪烷/Cz三环菇烷比值逐渐增加，而Czt/Cz三环薪烷比值逐渐减小，但Cg三环粘烷/C蕾烷和C升董烷22S/（22S+22R）比值基本保持不变，另外部分参数比值则表现为无规律性的变化；尽管各种抽提物烃类组成和分子参数存在一定的差异，但各类化合物分布模式和部分参数值差异很
小，表明3种连续抽提物（不同赋存状态的烃类）均为页岩内本源烃，而非外来烃。关键词：祁连山；木里地区；含油页岩；赋存状态；连续抽提；烃组成
中图分类号：TE122.3
文献标识码：A
文章编号：1000-3754（2017）03-0168-07
COMIPOSITIONCHARACTERISTICSOFTHESATURATED HYDROCARBONOFTHESEQUENTIALEXTRACTSFROM
THEOIL-BEARINGSHALESWITHDIFFERENTPOLARITYREAGENTS
CHEN Xiaohui',2, ZHANG Min',2
(1.MOE Key Laboratory of the Exploration Technology for Oi & Gas Resources,Yangtze University,
Wuhan 430100,China; 2.School of Resources and Environment,Yangtze Unirersity,Wuhan, 430100,China) Abstract: The separation of the crude oil with different occurrence states in the shale is widely concemed at pres ent. The sequential extraction was conducted for the oil-bearing shale samples from the drilled holes in Muli Coalfield of Qilian Mountains using a suite of the solvents with the increase of the polarity such as n-hexane, dichlo-romethane and trichloromethane, the group compositions and quantitative chromatographic-mass spectrometry analy-sis of all extracts were performed. The results show that the first cold extract with the n-hexane is mainly the free oil with the most abundant saturated hydrocarbon; while the Soxhlet extracts of the trichloromethane generally belong to the adsorbed hydrocarbon with the much highest abundance of the polarity compositions and moreover pretty high-er carbon number n-alkanes; with the increase of the polarity of the reagents, the biomarker parameter of the se-
收稿日期：2016-08-06
改回日期：2017-04-02
基金项目：中石油科技创新基金（2014D-5006-0105）和国家自然科学基金（41273066）联合资助。作者简介：陈小慧，女，1978年生，讲师，主要从事油气地球化学教学和研究工作。
E-mail;nhxiaohui@aliyun.com
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