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Simulation of Carbonate Matrix Acidizing Using Arbitrary Lagrangian Eulerian (ALE)at Darcy Scale

Goudarzi, Mojtaba | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55215 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Jamshidi, Saeed; Bazargan, Mohammad
  7. Abstract:
  8. Injection of acid into the carbonate rock dissolves the rock, and the porous medium is constantly changing. As a result, the boundaries between the acid and the porous medium, which are in fact the interface between the solid phase and the liquid phase, are constantly changing. Therefore, on the issue of acid injection into carbonate rock, we are facing dynamic boundary conditions. Also, due to the simultaneous solution of transfer and reaction phenomena, modeling acid injection into carbonate rock faces many challenges.In such problems, the ALE method, which is a combination of the best features of the Lagrangian method and the Eulerian method, offers a very precise solution and is used as a reference solution for the validation of other numerical methods.In the present research, acid injection into carbonate rock by the ALE method has been modeled using OpenFOAM open source software. In order to validate the model presented in this research, the simulation results of acid injection into a calcite particle by the ALE method are compared with other available methods. Then, according to the transfer and reaction conditions and further validation, the dissolution patterns of a calcite particle are investigated. The boundary conditions at the solid-fluid interface are then evaluated. Also, in order to test the capability of the proposed model, acid injection was performed into a complex porous medium by the ALE method. Due to the fact that the ALE method is a very accurate method, in the end, the mass transfer coefficient parameter, which is used in many Darcy scale models, has been investigated.
  9. Keywords:
  10. Reactive Flow ; Reaction Rate ; Arbitrary Lagrangian-Eulerian Formulation ; Pore-Scale Model ; Chemical Dissolution ; OpenFOAM Software ; Carbonated Rock

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