石油学报 ›› 2009, Vol. 30 ›› Issue (2): 214-218.DOI: 10.7623/syxb200902009

• 地质勘探 • 上一篇    下一篇

塔河油田原油中金刚烷化合物绝对定量分析

马安来1, 金之钧1, 朱翠山2, 彭守涛1, 张卫彪1   

  1. 1. 中国石油化工股份有限公司石油勘探开发研究院, 北京, 100083;
    2. 长江大学, 湖北荆州, 434023
  • 收稿日期:2008-08-06 修回日期:2008-11-22 出版日期:2009-03-25 发布日期:2010-05-21
  • 作者简介:马安来,男,1969年12月生,2003年获中国石油勘探开发研究院博士学位,现为中国石油化工股份有限公司石油勘探开发研究院副教授,主要从事石油地球化学与油气成藏研究.E-mail:maal@pepris.com
  • 基金资助:

    国家重点基础研究发展规划(973)项目(2005CB422108)“海相碳酸盐岩层系油气富集规律与战略选区”;中国石油化工集团公司科技项目(P07021)“塔里木盆地超深层油气赋存相态研究”联合资助

Quantitative analysis on absolute concentration of diamondoids in oils from Tahe Oilfield

MA Anlai1, JIN Zhijun1, ZHU Cuishan2, PENG Shoutao1, ZHANG Weibiao1   

  1. 1. Sinopec Petroleum Exploration and Production Institute, Beijing 100083, China;
    2. Yangtze University, Jingzhou 434023, China
  • Received:2008-08-06 Revised:2008-11-22 Online:2009-03-25 Published:2010-05-21

摘要:

原油中甲基双金刚烷绝对含量是确定原油裂解程度的指标。运用全油色质方法,避免了样品处理中轻质组分的挥发损失,实现了原油中金刚烷化合物的准确绝对定量。使用D16-单金刚烷为内标,确定双金刚烷、D3-1甲基双金刚烷和D6-1,3-二甲基单金刚烷的响应因子分别为1.91、2.20和0.99。塔里木盆地塔河油田原油中4-甲基双金刚烷+3-甲基双金刚烷绝对含量一般分布在(4~35)×10-6,表明原油裂解程度较低,大于6 500m的深层可能仍具有石油勘探前景。

关键词: 塔河油田, 金刚烷化合物, 单金刚烷, 双金刚烷, 原油裂解, 绝对定量, 定量分析

Abstract:

The absolute concentration of methyldiamantane is an indicator for determining cracking degree of oils. The diamondoids are often lost due to evaporation during oil samples processing. The whole-oil GC-MS analysis can be used to determine the absolute concentration of diamondoids accurately. The response factors of diamantane, D3-1-methyldiamantane and D6-1,3-dimethyladamantane are 1.91, 2.20 and 0.99, respectively, taking D16-adamantane as an internal standard. The quantitative analysis of oils from Tahe Oilfield of Tarim Basin shows that the concentrations of 4-methyldiamantane+3-methyldiamantane in most oils range from 4×10-6 to 35×10-6, which indicates that the cracking degree of oils in this oilfield is low. There would have a prospect for petroleum exploration in the strata deeper than 6500m.

Key words: Tahe Oilfield, diamondoid compound, adamantane, diamantane, oil cracking, absolute concentration, quantitative analysis

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