Unsteady State Relative Permeability and Capillary ...

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XVI International Conference on Computational Methods in Water Resources (CMWR-XVI) Ingeniørhuset

Unsteady State Relative Permeability and Capillary Pressure Estimation of Porous Media
Paper
Author:Hossein Ghazanfari <ghazanfarimh@mehr.sharif.edu> (phd student, Chemical and Petroleum Engineering Department, Sharif University of Technology, Petroleum Research Center, Tehran, Iran)
Morteza Khodabakhsh <mortezakhodabakhsh@yahoo.com> (Ms Petroleum Engineer ,Chemical and Petroleum Engineering Department, Sharif University of Technology, Petroleum Research Center, Tehran, Iran)
Riaz Kharrat <kharrat@put.ac.ir> (Petroleum Research Center,Petroleum University of Technology,Tehran,Iran)
Davood Rashtchian <rashtchian@sharif.edu> (Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran)
Presenter:Hossein Ghazanfari <ghazanfarimh@mehr.sharif.edu> (phd student, Chemical and Petroleum Engineering Department, Sharif University of Technology, Petroleum Research Center, Tehran, Iran)
Date: 2006-06-18     Track: Special Sessions     Session: Pore-Scale Modelling: New Developments And Applications
DOI:10.4122/1.1000000550
DOI:10.4122/1.1000000551

To take capillary effect into account, a series of primary drainage experiments of water by a sample oil fluid have been studied. The experiments performed under different low flow rates on a horizontal high pressure glass type micromodel as a model of porous media. Based on conventional macroscopic flow equations,the relative permeabilities and capillary pressure are determined by parameter estimation technique from history matching of saturation and pressure data of unsteady state immiscible displacements. The Coery type of relative permeability and capillary pressure functions are used. The results show that the end point relative permeability of oil phase and the dynamic term of capillary pressure function increase with flow rate, but the saturation exponent of relative permeability functions are decreasing with flow rate. Also the results show that the capillary pressure and relative permeability curves are rate dependent and the relative permeability curves are increasing with flow rate. Key Words: Rate Dependent,Relative Permeability,Capillary Pressure,Unsteady State, History Matching,Micromodel