Anisotropic Permeability Measurement of Porous Media: A 3-Dimensional Method

2000 ◽  
Author(s):  
Mahmoud Asadi ◽  
Ali Ghalambor ◽  
Walter D. Rose ◽  
Mogdeh K. Shirazi
Keyword(s):  
Porous Media ◽  
Permeability Measurement ◽  
Anisotropic Permeability ◽  
3 Dimensional

scholarly journals CO2 Convective Dissolution in Oil-Saturated Unconsolidated Porous Media at Reservoir Conditions

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 233
Author(s):  
Widuramina Amarasinghe ◽  
Ingebret Fjelde ◽  
Nils Giske ◽  
Ying Guo
Keyword(s):  
Porous Media ◽  
Crude Oil ◽  
Water Solution ◽  
Co2 Storage ◽  
Bromothymol Blue ◽  
Power Relationship ◽  
Dimensionless Time ◽  
3 Dimensional ◽  
Reservoir Conditions ◽  
Unconsolidated Porous Media

During CO2 storage, CO2 plume mixes with the water and oil present at the reservoir, initiated by diffusion followed by a density gradient that leads to a convective flow. Studies are available where CO2 convective mixing have been studied in water phase but limited in oil phase. This study was conducted to reach this gap, and experiments were conducted in a vertically packed 3-dimensional column with oil-saturated unconsolidated porous media at 100 bar and 50 °C (representative of reservoir pressure and temperature conditions). N-Decane and crude oil were used as oils, and glass beads as porous media. A bromothymol blue water solution-filled sapphire cell connected at the bottom of the column was used to monitor the CO2 breakthrough. With the increase of the Rayleigh number, the CO2 transport rate in n-decane was found to increase as a function of a second order polynomial. Ra number vs. dimensionless time τ had a power relationship in the form of Ra = c×τ−n. The overall pressure decay was faster in n-decane compared to crude oil for similar permeability (4 D), and the crude oil had a breakthrough time three times slower than in n-decane. The results were compared with similar experiments that have been carried out using water.

A Numerical Solution for the Design of Externally Pressurized Porous Gas Bearings: Thrust Bearings

1968 ◽  
Vol 90 (4) ◽  
pp. 810-817 ◽  
Author(s):  
E. P. Gargiulo ◽  
P. W. Gilmour
Keyword(s):  
Porous Media ◽  
Numerical Solution ◽  
Experimental Verification ◽  
Anisotropic Permeability ◽  
Gas Bearings ◽  
Thrust Bearings ◽  
Porous Bearing ◽  
Bearing Load ◽  
Typical Design

A numerical solution for the flow in a porous bearing is presented which includes provision for compressibility of the lubricant and anisotropic permeability of the porous media. Typical design curves for the bearing load and flow are included with experimental verification.

scholarly journals Magnetic Resonance Velocimetry Measurement of Viscous Flows through Porous Media: Comparison with Simulation and Voxel Size Study

Physics ◽  
2021 ◽  
Vol 3 (4) ◽  
pp. 1254-1267
Author(s):  
Martin Bruschewski ◽  
Sam Flint ◽  
Sid Becker
Keyword(s):  
Porous Media ◽  
Magnetic Resonance ◽  
Measurement Uncertainty ◽  
Pore Size ◽  
Velocity Data ◽  
Voxel Size ◽  
3 Dimensional ◽  
Magnetic Resonance Velocimetry ◽  
Flows Through Porous Media ◽  
Good Agreement

Studies that use magnetic resonance velocimetry (MRV) to assess flows through porous media require a sufficiently small voxel size to determine the velocity field at a sub-pore scale. The smaller the voxel size, the less information is lost through the discretization. However, the measurement uncertainty and the measurement time are increased. Knowing the relationship between voxel size and measurement accuracy would help researchers select a voxel size that is not too small in order to avoid unnecessary measurement effort. This study presents a systematic parameter study with a low-Reynolds-number flow of a glycerol–water mixture sent through a regularly periodic porous matrix with a pore size of 5 mm. The matrix was a 3-dimensional polymer print, and velocity-encoded MRV measurements were made at 15 different voxel sizes between 0.42 mm and 4.48 mm. The baseline accuracy of the MRV velocity data was examined through a comparison with a computational fluid dynamics (CFD) simulation. The experiment and simulation show very good agreement, indicating a low measurement error. Starting from the smallest examined voxel size, the influence of the voxel size on the accuracy of the velocity data was then examined. This experiment enables us to conclude that a voxel size of 0.96 mm, which corresponds to 20% of the pore size, is sufficient. The volume-averaged results do not change below a voxel size of 20% of the pore size, whereas systematic deviations occur with larger voxels. The same trend is observed with the local velocity data. The streamlines calculated from the MRV velocity data are not influenced by the voxel size for voxels of up to 20% of the pore size, and even slightly larger voxels still show good agreement. In summary, this study shows that even with a relatively low measurement resolution, quantitative 3-dimensional velocity fields can be obtained through porous flow systems with short measurement times and low measurement uncertainty.

The impact of heterogeneous anisotropy of porous media on density-driven convection

2019 ◽  
Vol 30 (2) ◽  
pp. 956-976
Author(s):  
Qian Li ◽  
Weihua Cai ◽  
Xiaojing Tang ◽  
Yicheng Chen ◽  
Bingxi Li ◽  
...  
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Pseudospectral Method ◽  
Heterogeneous Porous Media ◽  
Saline Aquifers ◽  
Anisotropic Permeability ◽  
Content Type ◽  
Monotonic Trend ◽  
The Impact

Purpose The aim of this study is to numerically simulate the density-driven convection in heterogeneous porous media associated with anisotropic permeability field, which is important to the safe and stable long term CO2 storage in laminar saline aquifers. Design/methodology/approach The study uses compact finite difference and the pseudospectral method to solve Darcy’s law. Findings The presence of heterogeneous anisotropy may result in non-monotonic trend of the breakthrough time and quantity of CO2 dissolved in the porous medium, which are important to the CO2 underground storage. Originality/value The manuscript numerically study the convective phenomena of mixture contained CO2 and brine. The phenomena are important to the process of CO2 enhanced oil recovery. Interesting qualitative patterns and quantitative trends are revealed in the manuscript.

Permeability Measurement Methods in Porous Media: A Review

2008 ◽  
Author(s):  
Sanjay Sharma ◽  
Dennis A. Siginer
Keyword(s):  
Transport Phenomenon ◽  
Porous Media ◽  
Fluid Flow ◽  
Gas Flow ◽  
Experimental Methods ◽  
Measurement Methods ◽  
Alternative Methods ◽  
Flow Modeling ◽  
Permeability Measurement ◽  
Fluid Flow Modeling

Accurate measurement of Permeability is critical for fluid flow modeling in porous media. Various experimental methods have been devised that measure permeability as a porous material property. These experiments are based most commonly on Darcy’s law. Liquid flow and gas flow methods of permeability measurement for in-plane and transverse directions are detailed. Issues related to these methods are discussed. Some associated permeability models are discussed. Alternative methods of permeability determination based on cross transport phenomenon are presented.

Displacement Structures in 2- and 3-dimensional Porous Media at Low Viscosity Contrast

1991 ◽  
Vol T38 ◽  
pp. 95-98 ◽  
Author(s):  
V Frette ◽  
K J Måløy ◽  
F Boger ◽  
J Feder ◽  
T Jøssang ◽  
...  
Keyword(s):  
Porous Media ◽  
3 Dimensional ◽  
Low Viscosity ◽  
Viscosity Contrast
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