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An Integrally Embedded Discrete Fracture Model with a Semi-Analytic Transmissibility Calculation Method

Author

Listed:
  • Renjie Shao

    (College of Engineering, Peking University, Beijing 100871, China)

  • Yuan Di

    (College of Engineering, Peking University, Beijing 100871, China)

Abstract

The embedded discrete fracture model (EDFM) combines the advantages of previous numerical models for fractured reservoirs, achieving a good balance between calculation cost and simulation accuracy. In this work, an integrally embedded discrete fracture model (iEDFM) is introduced to further improve the simulation accuracy and expand the application of the model. The iEDFM has a new gridding method that can arbitrarily grid the fractures according to the requirements rather than finely subdividing fracture elements. Then, with a more precise pressure distribution assumption inside the matrix blocks, we are able to obtain a semi-analytic calculation method of matrix-fracture transmissibility applied to iEDFM. Several case studies were conducted to demonstrate the advantage of iEDFM and its applicability for intersecting and nonplanar fractured reservoirs, and a 3D case with a modified dataset from a reported seismic survey could be used to demonstrate the potential application of the iEDFM in real field studies.

Suggested Citation

  • Renjie Shao & Yuan Di, 2018. "An Integrally Embedded Discrete Fracture Model with a Semi-Analytic Transmissibility Calculation Method," Energies, MDPI, vol. 11(12), pages 1-20, December.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3491-:d:190583
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    References listed on IDEAS

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    1. Yongbin Zhang & Bin Gong & Junchao Li & Hangyu Li, 2015. "Discrete Fracture Modeling of 3D Heterogeneous Enhanced Coalbed Methane Recovery with Prismatic Meshing," Energies, MDPI, vol. 8(6), pages 1-24, June.
    2. Weirong Li & Zhenzhen Dong & Gang Lei, 2017. "Integrating Embedded Discrete Fracture and Dual-Porosity, Dual-Permeability Methods to Simulate Fluid Flow in Shale Oil Reservoirs," Energies, MDPI, vol. 10(10), pages 1-15, September.
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    Cited by:

    1. Renjie Shao & Yuan Di & Dawei Wu & Yu-Shu Wu, 2020. "An Integrally Embedded Discrete Fracture Model for Flow Simulation in Anisotropic Formations," Energies, MDPI, vol. 13(12), pages 1-21, June.
    2. Zheng, Shuai & Li, Sanbai & Zhang, Dongxiao, 2021. "Fluid and heat flow in enhanced geothermal systems considering fracture geometrical and topological complexities: An extended embedded discrete fracture model," Renewable Energy, Elsevier, vol. 179(C), pages 163-178.

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