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天然气地球科学 ›› 2011, Vol. 22 ›› Issue (2): 233–239.doi: 10.11764/j.issn.1672-1926.2011.02.233

• 天然气地球化学 • 上一篇    下一篇

烃源岩可溶有机质的超临界流体抽提方法及应用研究

徐大庆   

  1. 1．中国石化股份有限公司胜利油田分公司地质科学研究院，山东 东营 257015；
    2．中国石油大学地球资源与信息学院，山东 东营 257061
  • 收稿日期:2010-09-20 修回日期:2011-03-08 出版日期:2011-04-10 发布日期:2011-04-10
  • 通讯作者: 徐大庆xudaqing116.slyt@sinopec.com E-mail:xudaqing116.slyt@sinopec.com
  • 作者简介: 徐大庆(1971-)，男，山东淄博人，工程师，主要从事油气地球化学实验及研究工作.
  • 基金资助:

    国家自然科学基金项目(编号:41072096)资助.

Supercritical Fluid Extraction of Soluble Organic Matter  in Hydrocarbon Source Rocks and Its Application

XU Da-Qing   

  1. 1.Geological Scientific Research Institute of Shengli Oilfield Branch,SinoPc Co.Ltd.,Dongying 257015,China
    2.Department of Resources and Information, China University of Petroleum, Dongying 257061,China
  • Received:2010-09-20 Revised:2011-03-08 Online:2011-04-10 Published:2011-04-10

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摘要：

综述了超临界流体抽提方法(SFE)的原理、特点，并以CO2作为流体，对济阳坳陷烃源岩样品进行了超临界抽提实验。选择了影响SFE抽提效率的压力、温度、时间3个主要因素进行烃源岩的超临界抽提条件实验，探讨了这3个条件的变化对烃源岩SFE抽提效率的影响，确定了CO2作为超临界流体抽提烃源岩的最佳条件为24MPa、50℃、30min，建立了烃源岩中可溶有机质的超临界流体抽提方法。同时用气相色谱、色谱—质谱等分析方法，将超临界抽提法得到的有机地球化学生物标志物参数与索氏抽提方法(SE)进行了对比，证实了超临界抽提法可替代传统索氏抽提方法，并且该方法保留了更多的低碳数烃组分，是分离烃源岩中可溶物的有效方法。在此基础上应用该方法对东营凹陷南斜坡沙四上亚段烃源岩烃产率进行了研究，发现超临界抽提法在计算烃产率方面更具优越性。

关键词: 超临界流体抽提(SFE), 索氏抽提(SE), 原油, 烃源岩

Abstract:

The principle and characteristics of Supercritical fluid extraction (SFE) were summarized in this paper. The supercritical fluid extraction experiments were carried out on the source rocks of Jiyang depression, using carbon dioxide as fluid. Three main factors of pressure, temperature and time that influence the extraction efficiency of SFE were chosen for the conditional experiments. Furthermore, the effects of variation of the three factors on the extraction efficiency were investigated, and the optimum condition was suggested to the pressure of 24 MPa, the temperature of 50℃ and the time of 30 mins. The method of SFE for soluble organic matters in source rocks was established. Using GC and GC\|MS, the biomarker parameters of the extracts by SFE were compared with that of by SE. The results showed that the SFE can substitute for SE. Furthermore, the SFE reserved more low carbon number hydrocarbons and was an available approach. The yield of hydrocarbons from the upper section of 4th member of Shahejie Formation in the south slope of Dongying depression was studied by SFE and it was found that SFE has superiority in the calculation of yield of hydrocarbon.

Key words: Supercritical fluid extraction（SFE）, Soxhlet extraction(SE), Crude oil, Source rock

中图分类号: 

  • TE135

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