Types and sources of crude oil in the Chepaizi uplift, northwest margin of the Junggar basin

被引：0
|
作者：
Liu D. [1 ]
Ni Y. [2 ]
Chen J. [3 ]
Li E. [1 ]
Yao L. [3 ]
Zhang Z. [2 ]
Wang X. [1 ]
Dai J. [3 ]
机构：
[1] Petrochina Xinjiang Oilfield Company, Xinjiang, Karamay
[2] China University of Petroleum, Beijing
[3] PetroChina Research Institute of Petroleum Exploration and Development, Beijing
来源：
Dizhi Xuebao/Acta Geologica Sinica | 2023年 / 97卷 / 05期
关键词：
biomarker; carbon isotope; Chepaizi uplift; crude oil; Junggar basin; oil source identification;
D O I：
10.19762/j.cnki.dizhixuebao.2023223
中图分类号：
学科分类号：
摘要：
The Hongche fault belt- Chepaizi uplift in the northwestern margin of Junggar basin has many oil and gas reservoirs. As the physical and chemical properties and geochemical characteristics of crude oil are very complex, the type and source of crude oil have long been controversial, which directly affects decisions on oil and gas exploration. Based on the summary of typical geochemical characteristics of crude oils and main oil source identification indexes in different ages of Junggar basin, this paper systematically analyzed and studied the geochemical characteristics and sources of the crude oils in the Hongche fault belt and the Chepaizi uplift, and divided the crude oils in this area into three types with single source and two types with mixed sources. Three types of single source crude oils were derived from the lacustrine source rocks of the Permian, coal measure source rocks of the Middle and Lower Jurassic, lacustrine source rocks of the Paleogene Anjihaihe, respectively. The two types of mixed crude oils were mixed from the biodegraded heavy oil derived from the Permian lacustrine source rocks, the normal crude oil derived from the Middle and Lower Jurassic coal measure source rocks, and the normal crude oil derived from the Paleogene lacustrine source rocks. The crude oil of the Carboniferous- Cretaceous oil reservoirs in the Hongche fault belt was mainly derived from the Permian lacustrine source rock, and the heavy oil in Chunfeng oilfield in the northeast of Chepaizi uplift was also derived from the Permian lacustrine source rock. Light crude oil in the Neogene Shawan Formation oil reservoir on the east side of Chepaizi uplift and west side of Hongche fault belt was derived from Paleogene lacustrine source rocks. The heavy oil of the Cretaceous- Paleogene oil reservoirs in the Chunguang oilfield in the middle of Chepaizi uplift is amixture of the Permian sourced heavy oil and the Jurassic sourced normal crude oil, and the heavy oil of Neogene Shawan Formation oil reservoir is amixture of the Permian sourced heavy oil and the Neogene sourced normal crude oil. The light crude oil of the Carboniferous- Paleogene oil reservoir in the west of Chepaizi uplift was derived from the Middle- Lower Jurassic coal measure source rocks, while the light crude oil of the Neogene Shawan Formation oil reservoir was derived from the Paleogene lacustrine source rocks. This paper has important implications for the study of hydrocarbon accumulation and regional oil and gas exploration and decision making in the southern area of northwest margin of Junggar basin. © 2023 Geological Society of China. All rights reserved.
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页码：1576 / 1597
页数：21
相关论文
共 41 条
  • [1] Chen Jianping, Zhao Changyi, Wang Zhaoyun, He Zhonghua, Qin Yong, Organic geochemical characteristics of oil, gas and source rocks of Jurassic coal measures innorthwestern Chian, Geological Review, 44, 2, pp. 149-159, (1998)
  • [2] Chen Jianping, Qin Yong, Huffe Bryan G., Wang Darui, Han Dexin, Huang Difan, Geochemical evidence for mudstone as the possible major oil source rock in the Jurassic Turpan basin, Northwest China, Organic Geochemistry, 32, 9, pp. 1103-1126, (2001)
  • [3] Jianping Chen, Digang Liang, Wang Xulong, Zhong Ningning, Song Fuqing, Deng Chunping, Shi Xinpu, Jin Tao, Shuzheng Xiang, Mixed oils derived from multiple source rocks in the Cainan oilfield, Junggar basin, Northwest China. Part I: Genetic potential of source rocks, features of biomarkers and oil sources of typical crude oils, Organic Geochemistry, 34, 7, pp. 889-909, (2003)
  • [4] Jianping Chen, Chunping Deng, Digang Liang, Xulong Wang, Ningning Zhong, Fuqing Song, Xinpu Shi, Tao Jin, Shuzheng Xiang, Mixed oils derived from multiple source rocks in the Cainan oilfield, Junggar basin, Northwest China. Part II: Artificial mixing experiments on typical crude oils and quantitative oil-source correlation, Organic Geochemistry, 34, 7, pp. 911-930, (2003)
  • [5] Chen Jianping, Liang Digang, Wang Xulong, Deng Chunping, Jin Tao, Xiang Shuzheng, Liu Hongwei, The discovery and significance of the crude oils derived from Triassic source rocks in the Junggar basin, Geochimic, 32, 6, pp. 582-590, (2003)
  • [6] Chen Jianping, Wang Xulong, Deng Chunping, Zhao Zhe, Ni Yunyan, Sun Yongge, Yang Haibo, Wang Huitong, Liang Digang, Zhu Rukai, Peng Xiling, Geochemcial features of source rocks in the southern margin, Junggarbasin, northwestern China, Acta Petrolei Sinica, 36, 7, pp. 767-780, (2015)
  • [7] Chen Jianping, Wang Xulong, Deng Chunping, Zhao Zhe, Ni Yunyan, Sun Yongge, Yang Haibo, Wang Huitong, Liang Digang, Geochemical features and classification of curde oil in the southern margin, Junggarbasin, northwestern China, Acta Petrolei Sinica, 36, 11, pp. 1315-1331, (2015)
  • [8] Chen Jianping, Wang Xulong, Deng Chunping, Liang Digang, Zhang Yueqian, Zhao Zhe, Zhi Dongming, Ni Yunyan, Yang Haibo, Wang Yutao, Geochemical features of source rock and crude oil in the Junggarbasin, Northwest China, Acta Geologica Sinica, 90, 1, pp. 37-67, (2016)
  • [9] Chen Jianping, Wang Xulong, Deng Chunping, Liang Digang, Zhang Yueqian, Zhao Zhe, Zhi Dongming, Ni Yunyan, Yang Haibo, Wang Yutao, Oil and gas source, occurrence and petroleum system in the Junggar basin, Northwest China, Acta Geologica Sinica, 90, 3, pp. 421-450, (2016)
  • [10] Chen Jianping, Wang Xulong, Deng Chunping, Zhao Zhe, Ni Yunyan, Sun Yongge, Yang Haibo, Wang Huitong, Liang Digang, Oil source correlation of typical crude oils in the southern margin, Junggarbasin, northwestern China, Acta Petrolei Sinica, 37, 2, pp. 160-171, (2016)
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