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Comparison of Transfer Functions in Dual Porosity-Dual Permeability Model in Simulation of Naturally Fractured Reservoirs in Two Phase Water-Oil Systems

Asadbegi, Mohsen | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47222 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Taghizadeh Manzari, Mehrdad
  7. Abstract:
  8. In this study, simulation of two-phase water-oil compressible flow in naturally fractured reservoirs is studied. The studied reservoir has a 1D and horizontal ge-ometry that its properties such as porosity and permeability are homogeneous.Dual Porosity and Dual Porosity-Dual Permeability models are employed for simulation of reservoir. Reservoir descriptive equations are conservation of mass and momentum. Conservation of momentum equation is simplified by Darcy law and two-phase fluid flow is simulated with Black-oil model. Discretization of equations is done by finite volume method. In order to solve the equations of two-phase compressible fluid flow, the so-called IMPES (Implicit Pressure Ex-plicit Saturation) method is employed. This method solves pressure equation implicitly and also solves saturation equation explicitly. At first, non-fractured reservoir is studied and results are compared with analytical Buckley-Leverett solution. After validation of results, convergence, stability of solutions and ef-fects of capillary and gravity are studied. Then fluid flow in fractured reservoir is simulated and validation of results is studied. Next, convergence, stabil-ity and effect of rock compressibility, fluid compressibility, gravity,boundary conditions, shape factors and transfer functions are investigated. Finally, simu-lation results with Dual Porosity and Dual Porosity-Dual Permeability models for different transfer functions are compared
  9. Keywords:
  10. Dual Porosity ; Dual Permeability ; Reservior Simulation ; Naturally Fractured Reservoir ; Two Phase Water-Oil

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