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Numerical Simulation of Displacement of the Fluid Phases in Porous Media

Fathi Kazerooni, Hamed Reza | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 48718 (58)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Moosavi, Ali
  7. Abstract:
  8. Nowadays, oil has an important role in our life and most of its role can be seen on the transportation. Discovering and extraction of oil are very important to produce oil and receive it to costumer. When oil is discovered, the oil companies used to drill the ground to extract the oil but they can’t extract all of oil from its reservoir. So, researchers proposed to inject another fluid like water to the oil reservoir to extract oil. Oil is trapped in the porous media which has a lot of pores and some of them have a micro scale size and they contain oil. When water is injected to the reservoir it flows in this pore and interfaces with oil and they create a multiphase flow. The governing equations are commonly continuum and they derived from the Navier-Stokes equation. To simulate this multi-phase flow numerically, it is used the computational fluid dynamics (CFD) to change the governing equations to their numerical type. For multi-phase flow, the problem is a transient. So, it is consider ed the gradient of time. In this simulation, structural mesh is used in micro scale and oil droplet is put between two pores grains. Then, the second fluid(air and water) has been injected to the system. To define the time of secondary fluid, a large number of iteration is used to simulate the steady state condition. It is simulated 2 different porous media. One of them is considered that the distance between two grains is short and the other one is considered that the distance between these grains are long. Both of these parts, all results are investigated for different contact angles. The First part, the contact angle is between oil as a primary fluid and air as the secondary one. But the last part, it is used the oil as the primary fluid and water as the secondary one. At last the velocity and the time that the water needs to replace with the oil droplet has been reported
  9. Keywords:
  10. Porous Media ; Computational Fluid Dynamics (CFD) ; Multi-Phase Multi-Species Flow ; Displacement Mechanism ; Numerical Simulation ; Fluid Phase

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