EFM_Goyal_et_al 2016.pdf (1.93 MB)
Scale dependency of dynamic relative permeability- satuartion curves in relation with fluid viscosity and dynamic capillary pressure effect
journal contribution
posted on 2016-05-26, 14:50 authored by Gaurav Goel, Luqman K. Abidoye, Bhagu R. Chahar, Diganta DasDiganta DasCapillary pressure–saturation-relative permeability relationships (Pc–Sw–Kr) are
functions of importance in modeling and simulations of the hydrodynamics of two-phase
flow in porous media. These relationships are found to be affected by porous medium and
fluid properties but the manner in which they are affected is a topic of intense discussion. For example, reported trends in fluid viscosity and boundary conditions effects have been found to be contrary to each other in different studies. In this work, we determine the dependency of dynamic Kr–Sw relationships (averaged data) on domain scale in addition to investigating the effects of fluid viscosity and boundary pressure using silicone oil (i.e. 200
and 1000 cSt) and water as the respective non-wetting and wetting fluids with a view to
eliminating some of the uncertainties reported in the literature. Water relative permeability, Krw, was found to increase with increasing wetting phase saturation but decreases with the increase in viscosity ratio. On the other hand, the oil relative permeability, Krnw, was found to increase with the increasing non-wetting phase saturation in addition to the increase in
viscosity ratio. Also, it was found that with the increasing boundary pressure Krw decreases while Krnw increases. The influence of scale on relative permeability was slightly indicated in the non-wetting phase with Krnw decreasing as domain size increases. Effect of measurement
location on dynamic relative permeability was explored which is rarely found in
the literature. Comparison was also made between Kr–Sw relationships obtained under
static and dynamic condition. Finally, mobility ratio (m) and dynamic coefficient (s) were plotted as a function of water saturation (Sw), which showed that m decreases as s increases at a given saturation, or vice versa.
Funding
This study has been carried in the framework of the EPSRC (UK) Project GR/S94315/ 01, ‘‘microheterogeneity and temperature effects on dynamic capillary pressure–saturation relationships for two-phase flow in porous media"
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Environmental Fluid MechanicsVolume
0Issue
0Pages
0 - 0Citation
GOEL, G. ...et al., 2017. Scale dependency of dynamic relative permeability- satuartion curves in relation with fluid viscosity and dynamic capillary pressure effect. Environmental Fluid Mechanics, 16 (5), pp.945-963.Publisher
© The Author. Published by SpringerVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Acceptance date
2016-05-05Publication date
2017Notes
This is an Open Access Article. It is published by Springer under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Publisher version
Language
- en