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Experimental Investigation and Numerical Modeling of Gravity Drainage in Multi-Block Fractured Porous Media

Izadmehr, Mojtaba | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51095 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ghazanfari, Mohammad Hossein
  7. Abstract:
  8. Due to the fact that, over 60% of oil reserves are located in fractured reservoirs, this type of reservoirs requires a great deal of attention. The presence of the fractures in porous media results in many complexities in the liquid path and production, consequently, simulation and modeling of flow equations is highly important. In order to achieve a more profound understanding of liquid flow in gravity drainage mechanism, the concept of capillary tubes is initially used. By using the capillary tube concept, at first, the gravity drainage mechanism is investigated in the first block in a stack of blocks and an analytical solution is presented for this case. Then, the stack of blocks is investigated and a numerical solution is presented. Afterward, in order to investigate a more realistic case, Darcy flow equations are used in conjunction with saturation dependent functions, and two analytical models are presented in presence of gravity and viscous forces. Then, the models are extended to be able to consider the case of the matrix of blocks. Finally, an experimental analysis conducted by a gravity drainage mechanism apparatus with glass beads. The results of the experimental study are used with the new model, to determine the unknown rock and fluid parameters. And, based on these parameters, the flow mechanism is studied
  9. Keywords:
  10. Fractured Reservoirs ; Block to Block Interaction ; Capillary Tube ; Analytical Solution ; Imbibition Process ; Gas-Oil Gravity Drainage

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