多环芳烃菲指标在油气化探中的应用

doi:10.11764/j.issn.1672-1926.2016.06.1067

天然气地球科学

多环芳烃菲指标在油气化探中的应用

李广之，毕文涛，胡斌，张宗元，周琼，高伟，俞蓉新

中国石化集团资产经营管理有限公司合肥培训测试中心，安徽合肥 230022

收稿日期:2015-05-20 修回日期:2016-02-17 出版日期:2016-06-10 发布日期:2016-06-10
作者简介:李广之(1970-)，男，安徽长丰人，高级工程师，硕士，主要从事油气地球化学基础理论、技术方法应用及实验分析技术研究. E-mail:lgzsir@163.com.
基金资助:
中国石油化工股份有限公司石油勘探研究院 “沉积物样品中多环芳烃定性定量检测技术研究” 院控项目(编号:G5800-14-ZS-YK011)资助.

The application of the phenanthrene indicator in the oil and gas geochemical exploration

Li Guang-zhi，Bi Wen-tao，Hu Bin，Zhang Zong-yuan，Zhou Qiong，Gao Wei，Yu Rong-xin

Hefei Training and Testing Center of Assets Management Ltd.of China Petrochemical Corporation，Hefei 230022,China

Received:2015-05-20 Revised:2016-02-17 Online:2016-06-10 Published:2016-06-10

摘要/Abstract

摘要： 采用新技术定性定量检测出了从3个已知区上方采集的126个土壤样品中的菲、苊、芴等10种多环芳烃，并从油气有机地球化学角度，结合多环芳烃组分的性质优选出了菲/苊、菲/芴、菲/苯并(a)芘3个组合指标。通过已知区上的应用成果，总结出在地表上预测和判别油气属性的模式为：菲/苊、菲/芴、菲/苯并(a)芘都呈高值异常的区域下方含有油藏；周边边缘表现为高值异常、中间呈低值异常的区域下方含有气藏；菲/苊和菲/芴呈高值异常、菲/苯并(a)芘呈低值异常的区域下方为断裂带。某些多环芳烃的均值特征也可以作为油气属性判别指标：在轻质油藏、天然气藏上方∑四环、∑五环指标最低，在中-重质油藏上方含量最高；∑三环/∑四环、∑三环/∑五环、轻重比等指标在轻质油油藏上方含量最高，天然气藏上方含量次之，在中_重质油藏上方含量最低；菲/苊与菲/芴等指标高度相关，反映了其在油气藏中本身的含量特征；菲在油气藏中运移至地表的容易程度顺序为重质油＜中质油＜轻质油＜湿气，而苯并(a)芘指标为环境背景指标，因而菲/苯并(a)芘指标大小特征也同样表现为重质油＜中质油＜轻质油＜湿气。

关键词: 多环芳烃, 菲, 比值指标, 油气化探, 应用

Abstract: We detected 10 kinds of polycyclic aromatic hydrocarbons such as phenanthrene,acenaphthene,and fluorene in 126 soil samples collected from the top of the three known areas,and,from the oil and gas geochemistry angle,selected three indicators of phenanthrene/acenaphthene,phenanthrene/fluorene,phenanthrene/benzo (a) pyrene optimizedly combined with the nature of the polycyclic aromatic hydrocarbons (PAHs).From the result of the application in the known areas,we summed up the predictable and discriminant model of oil and gas properties in the surface that there are oil reservoirs where all of the phenanthrene/acenaphthene,phenanthrene/fluorene,phenanthrene/benzo (a) pyrene show high value anomaly,and gas reservoirs where the edge shows high value anomaly and the center is low,and there are fault zone where phenanthrene/acenaphthylene and phenanthrene/fluorene are high anomaly,and phenanthrene/benzo (a) pyrene is low.Some average values of polycyclic aromatic hydrocarbons can be used as discriminant indicators of oil and gas properties.The total values of the tetracyclic and pentacyclic hydrocarbons were the lowest in the light oil reservoir and natural gas reservoir and the highest in the medium-heavy oil reservoir.The indicators of total value of tricyclic/tetracyclic hydrocarbons,tricyclic/pentacyclic hydrocarbons and weight ratio are the highest in the light oil reservoir,medium in the natural gas reservoir and lowest in the medium-heavy oil reservoir.The phenanthrene/acenaphthene and phenanthrene/fluorene and other indicators are highly correlated,reflecting the content characteristics of themselves in the oil and gas reservoirs.The order of the phenanthrene’s ability of migrating from the reservoirs to the surface is heavy oil<medium oil< light oil < the moisture.As benzo (a) pyrene is the environmental background indicator,the order of phenanthrene/benzo (a) pyrene is also heavy oil< medium oil< light oil < moisture.

Key words: PAHs, Phenanthrene, Ratio indicator, Oil and gas geochemical exploration, Application

中图分类号:

TE122.2⁺3

李广之, 毕文涛, 胡斌, 张宗元, 周琼, 高伟, 俞蓉新. 多环芳烃菲指标在油气化探中的应用[J]. 天然气地球科学, 2016, 27(6): 1067–1073.

Li Guang-zhi, Bi Wen-tao, Hu Bin, Zhang Zong-yuan, Zhou Qiong, Gao Wei, Yu Rong-xin. The application of the phenanthrene indicator in the oil and gas geochemical exploration[J]. Natural Gas Geoscience, 2016, 27(6): 1067–1073.

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多环芳烃菲指标在油气化探中的应用

The application of the phenanthrene indicator in the oil and gas geochemical exploration

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