| 异构比φiC4 /φnC4 和φiC5 /φnC5 的石油地质意义 |
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| 引用本文： | 李广之,吴向华.异构比φiC4 /φnC4 和φiC5 /φnC5 的石油地质意义[J].物探与化探,2002,26(2):135-139. |
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| 作者姓名： | 李广之 吴向华 |
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| 作者单位： | 中国石油化工集团石油勘探开发研究院石油化探研究所 安徽合肥230022
(李广之)，中国石油化工集团石油勘探开发研究院石油化探研究所 安徽合肥230022(吴向华) |
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| 摘 要： | 同分子量的正构烷烃和异构烷烃存在着物理化学性质差异,在运移过程中受围岩的物理化学性质及其它外部因素的影响必然产生分异效应,从而使二者在空间分布上具有一定的特征和规律,异构比指标可以在一定程度上反映出这种特征和规律性。用异构比φiC4 /φnC4 和φiC5 /φnC5 指标可以判断有机质的成熟度,研究轻烃运移的途径、方向、生成环境及轻烃的生物降解。
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| 关 键 词： | 轻烃 异构比 分异效应 石油地质意义 |
| 文章编号： | 1000-8918(2002)02-0135-05 |
| 收稿时间： | 2001-05-21 |
THE PETROLEUM GEOLOGICAL SIGNIFICANCE OF SOMERIZATION RATES φiC4 /φnC4 AND φiC5 /φnC5 |
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| Li Guang-zhi,Wu Xiang-hua.THE PETROLEUM GEOLOGICAL SIGNIFICANCE OF SOMERIZATION RATES φiC4 /φnC4 AND φiC5 /φnC5[J].Geophysical and Geochemical Exploration,2002,26(2):135-139. |
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| Authors: | Li Guang-zhi Wu Xiang-hua |
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| Institution: | Institute of Petroleum Geochemical Exploration, Institute of Petroleum Exploration and Development, SINPEC, Hefei 230022, China |
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| Abstract: | Due to the difference of the physical and chemical properties between the normal paraffin and the isoalkane which have the same molecular weight,they are affected by the physical and chemical property of soil substrate and other external environmental factors and are hence likely to have some differentiation effects during migration,rendering their distribution in space characterized by some signature and regularity.Isomerization rate indicators φiC4 /φnC4 and φiC5 /φnC5 can expose to some extent the characteristics and regularity.With the isomerization rate indicators φiC4 /φnC4 and φiC5 /φnC5 ,we can determine organic maturity,path and direction of light hydrocarbon migration and light hydrocarbon generating environment,and study biochemical degradation of light hydrocarbon. |
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| Keywords: | light hydrocarbon isomerization rate divergence effect petroleum geological significance |
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