Ruthenium-ion-catalyzed oxidation of asphaltenes and oil-source correlation of heavy oils from the Lunnan and Tahe oilfields in the Tarim Basin, NW China

被引：0

作者：

Ma A. ^{[1
,2
]}

Zhang S. ^{[3
]}

Zhang D. ^{[3
]}

Jin Z. ^{[1
]}

Ma X. ^{[1
]}

Chen Q. ^{[4
]}

机构：

[1] Petroleum Exploration and Production Research Institute, SinoPec

[2] The Department of Geochemistry, Yangtze University

[3] Research Instiute of Petroleum Exploration and Development, CNPC

[4] Exploration and Development Scientific Research Institute, Zhongyuan Oilfield Company

来源：

Chinese Journal of Geochemistry | 2005年 / 24卷 / 1期

关键词：

Asphaltene; Biomarker; Heavy oil; Oil-oil correlation; Oil-source correlation; Ruthenium-ions-catalyzed oxidation (RICO); Tarim Basin;

D O I：

10.1007/BF02869686

中图分类号：

学科分类号：

摘要：

The identification of marine source rocks in the Tarim Basin is debated vigorously. The intention of this paper is to investigate the asphaltenes in heavy oils from the Lunnan and Tahe oilfields and Well TD2 with ruthenium-ions-catalyzed oxidation technique (RICO), in order to explore its role in oil-oil and oil-source correlations. The RICO products included n-alkanoic acids, α, ω-di-n-alkanoic acids, branched alkanoic acids, tricyclic terpanoic acids, hopanoic acids, gammacerane carboxylic acid, regular sterane carboxylic acids and 4-methylsterane carboxylic acids. The n-alkyl chains and biomarkers bounded on the asphaltenes were of unsusceptibility to biodegradation. The distribution and absolute concentrations of n-alkanoic acids in the RICO products of heavy oils from the Lunnan and Tahe oilfields are different from those of Well TD2. The biomarkers bounded on the asphaltenes, especially steranes, have a distribution trend similar to that of the counterparts in saturates. The sterane carboxylic acids and 4-methylsterane carboxylic acids in the RICO products of heavy oils from the Lunnan and Tahe oilfields, dominated by C30 sterane and C31 4-methylsterane carboxylic acids, respectively, are significantly different from those of the heavy oils of Well TD2, whose dominating sterane and 4-methylsterane carboxylic acids are C28 sterane and C29 4-methylsterane acids, respectively. The RICO products of the asphaltenes further indicate that the Middle-Upper Ordovician may be the main source rocks for heavy oils from the Lunnan and Tahe oilfields.

引用

页码：28 / 36

页数：8

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