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主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
Effect mechanism of seepage force on the hydraulic fracture propagation
  • 作者

    Haiyang WangDesheng ZhouYi ZouPeng Zheng

  • 单位

    School of Petroleum Engineering, Xi’an Shiyou UniversityEngineering Research Center of Development and Management for Low to Extra-Low Permeability Oil and Gas Reservoirs in West China, Ministry of Education, Xi’an Shiyou UniversityXi’an University of Science and Technology

  • 摘要

    The flow of fluid through the porous matrix of a reservoir rock applies a seepage force to the solid rock matrix. Although the seepage force exerted by fluid flow through the porous matrix of a reservoir rock has a notable influence on rock deformation and failure, its effect on hydraulic fracture (HF) propagation remains ambiguous. Therefore, in this study, we improved a traditional fluid–solid coupling method by incorporating the role of seepage force during the fracturing fluid seepage, using the discrete element method. First, we validated the simulation results of the improved method by comparing them with an analytical solution of the seepage force and published experimental results. Next, we conducted numerical simulations in both homogeneous and heterogeneous sandstone formations to investigate the influence of seepage force on HF propagation. Our results indicate that fluid viscosity has a greater impact on the magnitude and extent of seepage force compared to injection rate, and that lower viscosity and injection rate correspond to shorter hydraulic fracture lengths. Furthermore, seepage force influences the direction of HF propagation, causing HFs to deflect towards the side of the reservoir with weaker cementation and higher permeability.

  • 关键词

    Hydraulic fracturingSeepage forceFracture propagationDiscrete element methodReservoir heterogeneity

  • DOI
  • 引用格式
    Wang, H., Zhou, D., Zou, Y. et al. Effect mechanism of seepage force on the hydraulic fracture propagation.Int J Coal Sci Technol 11, 43 (2024).
  • 图表
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    • Schematic diagram of the effect of the seepage force

    图(16) / 表(1)

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主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

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