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<p>The Ordos Basin in China is rich in unconventional shale oil and gas resources. This area has become an important base for the exploration and development of unconventional oil and gas resources in China. In this paper, the key parameters of shale oil trap area, reservoir thickness, EUR per well, recovery factor, horizontal well water injection development parameters, and quasi-natural energy development well control area of the Chang 7 Member are systematically studied. The volume method, single well EUR method and geological abundance analogy method are optimized, and the applicability of the method and resource evaluation are carried out to quantitatively evaluate the oil resources of the Chang 7 shale oil in the Ordos Basin. Reservoir conditions and source rocks of the Chang 7 shale oil in the Ordos Basin are the key factors for resource evaluation. The volume method, EUR analogy method and resource abundance analogy method are suitable for the evaluation of shale oil resources in the Ordos Basin. The geological resource of the Chang 7 shale oil evaluated by volume method is 3.116 billion tons, 2.549 billion tons by EUR analogy method, and 3.297 billion tons by resource abundance analogy method.</p>

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Study on Evaluation Methods, Selection and Applicability of Key Parameters of Typical Shale Oil Resources

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • Xiujuan Wang,
  • Xiao Hui,
  • Xianyang Liu,
  • Zhongyi Zhang,
  • Jihong Li,
  • Yalin Qi,
  • Dongxia Chen

摘要

The Ordos Basin in China is rich in unconventional shale oil and gas resources. This area has become an important base for the exploration and development of unconventional oil and gas resources in China. In this paper, the key parameters of shale oil trap area, reservoir thickness, EUR per well, recovery factor, horizontal well water injection development parameters, and quasi-natural energy development well control area of the Chang 7 Member are systematically studied. The volume method, single well EUR method and geological abundance analogy method are optimized, and the applicability of the method and resource evaluation are carried out to quantitatively evaluate the oil resources of the Chang 7 shale oil in the Ordos Basin. Reservoir conditions and source rocks of the Chang 7 shale oil in the Ordos Basin are the key factors for resource evaluation. The volume method, EUR analogy method and resource abundance analogy method are suitable for the evaluation of shale oil resources in the Ordos Basin. The geological resource of the Chang 7 shale oil evaluated by volume method is 3.116 billion tons, 2.549 billion tons by EUR analogy method, and 3.297 billion tons by resource abundance analogy method.