| 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 |
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| 作者姓名： | 马安来 张水昌 张大江 金之钧 马晓娟 陈清棠 |
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| 作者单位： | [1]PetroleumExplorationandProductionResearchInstitute,SinoPec,Beijing100083China／／TheDepartmentofGeochemistry,YangtzeUniversity,Jingzhou434023China [2]ResearchInstituteofPetroleumExplorationandDevelopment,CNPC,Beijingi00083,China [3]PetroleumExplorationandProductionResearchInstitute,SinoPec,Beijing100083China [4]ExplorationandDevelopmentScientificResearchInstitute,ZhongyuanOilfieldCompany,Puyang457001，China |
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| 基金项目： | ThisresearchprojectwasgrantedbytheNational“95”ScienceandTechnologyResearchProject(GrantNo.99 111 01 03) |
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| 摘 要： | The identification of marine source rocks in the Tarim Basin is debated vigorously. The intention of this paper is to investigate the asphahenes in heavy oils from the Lunnan and Tabe 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 Tabe oilfields are different from those of Well TD2. The biomarkers bounded on the asphahenes, 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 Tabe oilfields.
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| 关 键 词： | 钌-离子催化氧化 沥青 重油 塔里木盆地 油源作用 |
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 |
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| Anlai Ma,Shuichang Zhang,Dajiang Zhang,Zhijun Jin,Xiaojuan Ma,Qingtang Chen.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[J].Chinese Journal of Geochemistry,2005,24(1):28-36. |
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| Authors: | Anlai Ma Shuichang Zhang Dajiang Zhang Zhijun Jin Xiaojuan Ma Qingtang Chen |
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| Institution: | (1) Petroleum Exploration and Production Research Institute, SinoPec, 100083 Beijing, China;(2) The Department of Geochemistry, Yangtze University, 434023 Jingzhou, China;(3) Research Institute of Petroleum Exploration and Development, CNPC, 100083 Beijing, China;(4) Exploration and Development Scientific Research Institute, Zhongyuan Oilfield Company, 457001 Puyang, China |
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| Abstract: | 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 C2s 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. |
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| Keywords: | ruthenium-ions-catalyzed oxidation (RICO) asphaltene oil-source correlation oil-oil correlation heavy oil Tarim Basin biomarker |
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