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Modeling and Simulation of Non-Darcy Gas Flow During Underground Gas Storage in One of Iranian Reservoirs

Dehghan, Hamzeh | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41344 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Taghikhani, Vahid; Azin, Reza
  7. Abstract:
  8. The Darcy’ law is valid for low velocity or low Reynolds number where merely viscous force is responsible for pressure loss in the porous media. At higher velocity, because of inertial forces and turbulency, the pressure loss would be higher than Darcy’ law estimates; therefore at these flow regimes the Darcy’ law is no longer valid. Hence, consideration of Non-Darcy flow effect is necessary to sufficiently model high gas velocity effects. The velocity is high in gas reservoirs especially those ones that are considered for underground gas storage. In this study, the effects of Non-Darcy flow on several parameters such as; estimation of differential pressure, flowing bottom hole pressure, cumulative production rate, and initial gas in place are investigated. After the modeling of Non-Darcy in porous media, we suggest a new model to describe entire range of velocity in porous media which in overcome on the weakness of Forchheimer equation in transient Darcy flow to Non-Darcy flow and turbulent flow. To estimate the parameters of new model, the optimization toolbox of MATLAB programming software, genetic algorithm (GA), is used
  9. Keywords:
  10. Gas Reservoirs ; Numerical Simulation ; Non-Dorcy Model ; Natural Gas Storage

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