Validation of Steady-state Upscaling - Jonoud, Sima
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Steady-state upscaling techniques are quick and simple to implement. They are based on the assumption that either capillary forces (CEL)or viscous forces (VL) dominate flow. However, the reservoir conditions for whichthese assumptions are valid have not been clearly defined. We have used dimensional analysis to identify a comprehensive suite of dimensionlessgroups which can be used to define the validity of steady-state methods. The groupsaccount for the effect of heterogeneity, as well as the other parameters which controlthe balance between capillary and viscous forces. Numerical simulations…mehr

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Produktbeschreibung
Steady-state upscaling techniques are quick and simple to implement. They are based on the assumption that either capillary forces (CEL)or viscous forces (VL) dominate flow. However, the reservoir conditions for whichthese assumptions are valid have not been clearly defined. We have used dimensional analysis to identify a comprehensive suite of dimensionlessgroups which can be used to define the validity of steady-state methods. The groupsaccount for the effect of heterogeneity, as well as the other parameters which controlthe balance between capillary and viscous forces. Numerical simulations have beenused to identify the range of values for these groups over which steady-state methodsare valid. Our results yield a practical set of quantitative criteria which can be used todetermine the validity of steady-state upscaling methods for a wide range of geologicalmodels.Our criteria demonstrate that steady-state methods can be valid over a broader rangeof flow rates and length scalesthan previously thought.
Autorenporträt
Dr. Sima Jonoud has a background in Chemical Engineering from Shiraz University and Sharif University of Technology in Iran. She was graduated with a PhD degree from Imeprial College London in 2006. She is currently working as senior researcher at Statoil Research Centre in Bergen, Norway.