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Title: Simulation of gas flow in micro-porous media with the regularized lattice Boltzmann method

Journal Article · · Fuel

One primary challenge for prediction of gas flow in the unconventional gas reservoir at the pore-scale such as shale and tight gas reservoirs is the geometric complexity of the micro-porous media. In this paper, a regularized multiple-relaxation-time (MRT) lattice Boltzmann (LB) model is applied to analyze gas flow in 2-dimensional micro-porous medium reconstructed by quartet structure generation set (QSGS) on pore-scale. In this paper, the velocity distribution inside the porous structure is presented and analyzed, and the effects of the porosity and specific surface area on the rarefied gas flow and apparent permeability are examined and investigated. The simulation results indicate that the gas exhibits different flow behaviours at various pressure conditions and the gas permeability is strongly related to the pressure. Finally, the increased porosity or the decreased specific surface area leads to the increase of the gas apparent permeability, and the gas flow is more sensitive to the pore morphological properties at low-pressure conditions.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE). Oil and Natural Gas (FE-30); USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1415385
Alternate ID(s):
OSTI ID: 1413366
Report Number(s):
LA-UR-17-24301
Journal Information:
Fuel, Vol. 205, Issue C; ISSN 0016-2361
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 58 works
Citation information provided by
Web of Science

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Cited By (6)

Analytical Solution of Gas Flow in Rough‐Walled Microfracture at In Situ Conditions journal July 2019
A dusty gas model-direct simulation Monte Carlo algorithm to simulate flow in micro-porous media journal June 2019
Microstructure-based multi-scale evaluation of fluid flow in an anthracite coal sample with partially-percolating voxels journal May 2019
Multicomponent Lattice Boltzmann Simulations of Gas Transport in a Coal Reservoir with Dynamic Adsorption journal July 2018
Multiscale Apparent Permeability Model of Shale Nanopores Based on Fractal Theory journal September 2019
Direct Simulation Monte Carlo investigation of fluid characteristics and gas transport in porous microchannels journal November 2019