| 鄂尔多斯盆地西峰油田原油芳烃地球化学研究 |
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| 关键词:Xifeng oilfield crude oil source rock aromatic hydrocarbon composition and distribution oil-source correlation |
| 基金项目:中国科学院“优秀博士学位论文、院长奖获得者科研启动专项资金”和“强地震孕育和发生的实验研究”项目(编号:B07002) |
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| 摘要: |
| Geochemical Characteristics of Aromatic Hydrocarbon in Crude Oils from the Xifeng Oilfield of the Ordos Basin |
| Crude oil samples were collected systematically from the Xifeng Oilfield in Ordos Basin and analyzed by means of high-resolution GC-MS. In this paper, biomarkers of aromatic hydrocarbon in crude oils were studied, and the oil-source correlation and their genesis were investigated. The results show that the studied oils are of the same genetic type, and that alkylnaphthalene and aromatic sulfur compounds are indicative of depositional environment and thermal maturation. The oil-forming matrixes are algae and higher plants, and the higher plants have made an especially great contribution to the oil formation. The crude oils were formed under weak reduction and fresh water environments and are now mature. Geochemical characteristics of crude oils are closely correlated to those of the Upper Triassic Chang-7 subsection,suggesting that crude oils mainly originated from the Chang-7 oi1 bed group. |
| WANG Chuan-yuan,DUAN Yi,DU Jian-guo.2008.Geochemical Characteristics of Aromatic Hydrocarbon in Crude Oils from the Xifeng Oilfield of the Ordos Basin[J].Acta Geoscientica Sinica,29(5):613-618. |
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