Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2011, Vol. 32 ›› Issue (1): 1-3.

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Study on Tertiary Oil Charges to Typical Structures in Western Qaidam Basin

LI Xian-qing1a, ZHONG Ning-ning2, WANG Kang-dong1b, ZHANG Min3, PENG De-hua3, ZHANG Zhi-jun1b, DUN Ya-peng1b   

  1. 1. China University of Mining and Technology, a. State Key Laboratory of Coal Resources and Safe Mining, b. College of Geoscience and Surveying Engineering, Beijing 100083, China;
    2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
    3. Research Institute of Exploration and Development, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China
  • Received:2010-04-14 Published:2020-08-07

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Abstract: According to analyses of grains with oil inclusions (GOI), quantitative grain fluorescence (QGF), homogenization temperature of fluid inclusion (HTI), the Tertiary oil charges to four typical structures (Yuejing-1, Youshashan, Nanyishan and Jiandingshan) in Western Qaidam basin are studied in this paper, showing that there exist charges of difference: for Yuejing-1 and Youshashan structures stronger oil charges occur during $N^{1}_{2}$-$N^{3}_{2}$, with high GOI value (mostly 4%~10%) and high QGF intensity (more than 50 pc); for Nanyishan and Jiandingshan structures relatively weak oil charges appear during $N^{2}_{2}$-$N^{3}_{2}$, with lower GOI value (mostly less than 4%) and lower QGF intensity (less than 50 pc) in their reservoirs.

Key words: Qaidam basin, oil charge, oil inclusion abundance, quantitative grain fluorescence, fluid inclusion, homogeneous temperature

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