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Three-dimensional numerical simulation of hydraulically driven cohesive fracture propagation in deformable reservoir rock using enriched EFG method

Iranmanesh, M. A ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.1007/s10596-023-10198-2
  3. Publisher: Springer Science and Business Media Deutschland GmbH , 2023
  4. Abstract:
  5. In this paper, a fully coupled 3D. numerical simulation of hydraulic fracture propagation in saturated deformable porous media is presented in the context of the extrinsically enriched element free Galerkin (EFG) method. By exploiting the partition of unity property of moving least square shape functions, weak and strong discontinuities are simulated using the Ridge and the Heaviside enrichment functions, respectively. The cohesive crack model is used to describe the nonlinear fracture processes developing in the area in front of the crack tip where the energy dissipation takes place. The fracturing fluid flow within the fracture is modeled using Darcy’s law and the fracture permeability is considered to follow the cubic law. The developed fully coupled numerical framework can simulate the fluid leak-off phenomenon and formation of the fluid-lag zone. For verification of the developed computational algorithm, a problem with an analytical solution was simulated and a good agreement was seen between numerical and analytical results. The numerical simulations and the parametric studies results show that the proposed numerical framework can successfully simulate various aspects of the complicated process of the hydraulic fracturing treatment. © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG
  6. Keywords:
  7. Cohesive crack model ; Enriched element free Galerkin ; Extrinsic PUM enrichment ; Fully coupled numerical analysis ; Hydraulic fracturing
  8. Source: Computational Geosciences ; Volume 27, Issue 2 , 2023 , Pages 317-335 ; 14200597 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10596-023-10198-2