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Modeling the Gravity Drainage during Miscible Gas Injection in Fractured Reservoirs

Rezaei, Hojjat | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49446 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Masihi, Mohsen; Ghazanfari, Mohammad Hossein
  7. Abstract:
  8. The production of oil is challenging in the fractured reservoirs due to the large transmissibility contrast between matrix and fracture, and primary recovery is often low. The recovery efficiency depends on the relationship between the fracture and matrix permeability, and is strongly dependent on the wettability of the matrix, which reflects the imbibition potential of the reservoir. Among these parameters the multiphase fluid flow in gas invaded zone is the point of interest in this project. Gas injection in naturally fractured reservoirs maintains the reservoir pressure, and increases oil recovery primarily by gravity drainage and to a lesser extent by mass transfer between the flowing gas in the fracture and the porous matrix. Although gravity drainage has been studied extensively, there has been limited research on mass-transfer mechanisms between the gas flowing in the fracture and fluids in the porous matrix. In this study, by using different models, the effect of some important parameters on the molecular diffusion and gravity drainage has been investigated. The results of model were compared with the experimental data in the papers
  9. Keywords:
  10. Molecular Diffusion ; Gravity Drainage Mechanism ; Fractured Reservoirs ; Modeling ; Miscible Injection ; Gas Injection

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