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Numerical Calculation and Application for Crushing Rate and Fracture Conductivity of Combined Proppants

Author

Listed:
  • Zixi Guo

    (Department of Mathematical Sciences, Tsinghua University, Beijing 100084, China)

  • Dong Chen

    (China United Coalbed Methane National Engineering Research Center, Beijing 100095, China)

  • Yiyu Chen

    (PetroChina Coalbed Methane Company Limited, Beijing 100028, China)

Abstract

Proppant is one of the key materials for hydraulic fracturing. For special situations, such as middle-deep reservoirs and closure pressures ranging from 40 MPa to 60 MPa, using a single proppant cannot solve the contradiction between performance, which means crushing rate and fracture conductivity, and cost. However, using combined proppants is an economically effective method for hydraulic fracturing of such special reservoirs. Firstly, for different types, particle sizes, and proportions of combined proppants, various contact relationships between proppant particles are considered. The random phenomenon of proppant particle arrangement is described using the Monte Carlo method, and the deterministic phenomenon of proppant particles is processed using an optimization model, achieving computer simulation of the microscopic arrangement of proppant particles. Secondly, a mathematical model for the force analysis of combined proppant particles is established, and an improved singular value decomposition method is used for numerical solution. A computational model for the crushing rate and fracture conductivity of combined proppants is proposed. Thirdly, the numerical calculation results are compared and discussed with the test values, verifying the accuracy of the computational model. Finally, the application of combined proppants is discussed, and a model for optimizing the proportion of combined proppants is proposed. The onsite construction technology is introduced, and the cost and economic benefits of combined proppants are compared with those of all ceramic particles and excessive all-quartz sand. It is proved that combined proppants can balance performance and price, and are an economically effective method for hydraulic fracturing of special reservoirs. The research results can select the optimal proppant material and optimize the combination of different proppant types, which can help achieve cost reduction and efficiency increase in oil and gas development.

Suggested Citation

  • Zixi Guo & Dong Chen & Yiyu Chen, 2024. "Numerical Calculation and Application for Crushing Rate and Fracture Conductivity of Combined Proppants," Energies, MDPI, vol. 17(16), pages 1-22, August.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:16:p:3868-:d:1450699
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    References listed on IDEAS

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    1. Robert. K. Kaufmann & Caitlin Connelly, 2020. "Oil price regimes and their role in price diversions from market fundamentals," Nature Energy, Nature, vol. 5(2), pages 141-149, February.
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