Permeability determination in tight rock sample using novel method based on partial slip modelling and X-ray tomography data
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 4 June 2019
Issue publication date: 22 May 2020
Abstract
Purpose
The purpose of the paper was the application of computational fluid dynamics (CFD) techniques in fluid flow using Maxwell’s equation for partial slip modelling, estimating the flow parameters, and selecting tangential momentum accommodation coefficient (TMAC) for tight rock samples in permeability calculations.
Design/methodology/approach
The paper presents a numerical analysis of fluid flow in a low-porosity rock sample by using CFD. Modelling results allowed to determine mass flow rates in a rock sample and to calculate permeability values using a modified Darcy’s equation. Three-dimensional (3D) geometrical model of rock sample generated using computed X-ray tomography was used in the analysis. Steady-state calculations were carried out for defined boundary conditions in the form of pressure drop. The simulations were applied taking into account the slip phenomenon described by Maxwell’s slip model and TMAC.
Findings
Values of permeability were calculated for different values of TMAC, which vary from 0 to 1. Results in the form of gas mass flow rates were compared with the measured value of permeability for rock sample, which confirmed the high accuracy of the presented model.
Practical implications
Calculations of fluid flow in porous media using CFD can be used to determine rock samples’ permeability. In slip flow regime, Maxwell’s slip model can be applied and the empirical value of TMAC can be properly estimated.
Originality/value
This paper presents the usage of CFD, Maxwell’s equation for partial slip modelling, in fluid flow mechanism for tight rock samples. 3D geometric models were generated using created pre-processor (poROSE software) and applied in the raw form for simulation.
Keywords
Acknowledgements
Project is financed by the National Centre for Research and Development in Poland, program LIDER VI, project no. LIDER/319/L–6/14/NCBR/2015: Innovative method of unconventional oil and gas reservoirs interpretation using computed X-ray tomography.
Citation
Madejski, P., Krakowska, P., Puskarczyk, E., Habrat, M. and Jędrychowski, M. (2020), "Permeability determination in tight rock sample using novel method based on partial slip modelling and X-ray tomography data", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 6, pp. 3053-3063. https://doi.org/10.1108/HFF-11-2018-0711
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited