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A Dynamic Reserve Evaluation Method for an Ultra-Deep Fractured Tight Sandstone Gas Reservoir

Author

Listed:
  • Xinxing He

    (PetroChina Oil, Gas & New Energies Company, No. 9 North Street, Dongcheng District, Beijing 100028, China)

  • Chenhui Wang

    (Research Institute of Petroleum Exploration and Development, No. 20 Xueyuan Road, Haidian District, Beijing 100083, China)

  • Baohua Chang

    (Research Institute of Petroleum Exploration and Development, No. 20 Xueyuan Road, Haidian District, Beijing 100083, China)

  • Zhenglin Cao

    (Research Institute of Petroleum Exploration and Development, No. 20 Xueyuan Road, Haidian District, Beijing 100083, China)

  • Haifa Tang

    (Research Institute of Petroleum Exploration and Development, No. 20 Xueyuan Road, Haidian District, Beijing 100083, China)

Abstract

Dynamic reserves evaluation is crucial for the development and assessment of gas reservoirs. However, ultra-deep fractured tight sandstone gas reservoirs pose unique challenges due to their abnormally high pressure, tight matrix, and complex fracture distribution. This paper proposes a simplified forward calculation method that incorporates the fracture length for the rapid estimation of dynamic reserves in fractured tight sandstone gas reservoirs. This method was based on the pressure change rate equation and considered the unique characteristics of fractured gas reservoirs. Numerical simulations were conducted to analyze the sensitivity of the proposed method. The proposed method was applied to estimate the dynamic reserves of a fractured gas reservoir, and the results closely approximate the well group method, indicating its accuracy. The main advantage of this method lies in its simplicity, allowing field engineers to perform rapid dynamic reserve evaluations.

Suggested Citation

  • Xinxing He & Chenhui Wang & Baohua Chang & Zhenglin Cao & Haifa Tang, 2024. "A Dynamic Reserve Evaluation Method for an Ultra-Deep Fractured Tight Sandstone Gas Reservoir," Energies, MDPI, vol. 17(11), pages 1-16, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:11:p:2648-:d:1405165
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