Relative Permeabilities of Homogeneous and Heterogeneous Laminated Rock Samples under Hydrostatic and Triaxial Stresses

AlQuraishi, Abdulrahman A.; Almisned, Omar A.; Al-Awad, Musaed N.J.

doi:10.1016/s1018-3639(18)30497-5

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…This observed increase may be attributed to increased accumulation of the wetting phase near pore throats. We note that slightly increased relative permeability of the wetting phase has been found in some experimental studies [31,33]. Whereas the sole influence of wettability to relative permeability was identified to be modest, the dependence of relative permeability on viscosity ratio was found to be significant.…”

Section: Relative Permeability Under Stresssupporting

confidence: 59%

“…Relative permeability of oil increased when strain was less than 5% but decreased when strain was within 5%-15%. Al-Quraishi et al [33] investigated changes in relative permeabilities of sandstones under different conditions of loading. They found that relative permeability of water increased and that of oil decreased when the axial stress was increased at fixed confining pressure.…”

Section: Introductionmentioning

confidence: 99%

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DEM-LBM simulation of stress-dependent absolute and relative permeabilities in porous media

Huang

Xiao

Labra

et al. 2021

Chemical Engineering Science

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Section: Relative Permeability Under Stresssupporting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

DEM-LBM simulation of stress-dependent absolute and relative permeabilities in porous media

Huang

Xiao

Labra

et al. 2021

Chemical Engineering Science

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“…Figure2 shows a schematic of the experimental setup. Details of the material preparation and setup were presented in another publication concerned with relative permeabilities (Al-Quraishi et al (2010)). …”

Section: Rock Failure Criteriamentioning

confidence: 99%

Effect of triaxial in situ stresses and heterogeneities on absolute permeability of laminated rocks

Almisned

AlQuraishi

Al-Awad

2016

J Petrol Explor Prod Technol

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This work aims at improving our understanding of the effect of triaxial stress on absolute permeability of homogeneous and heterogeneous rocks. Measurements of absolute permeabilities of homogenous and heterogeneous laminated rock samples under hydrostatic and different laboratory-simulated triaxial in situ stress loadings were prepared. Experiments were conducted using homogenous, standard Berea and heterogeneous laminated sandstone cores (with lamination parallel to the flow direction). The effect of in situ stress variation on absolute permeability was investigated. Absolute permeability of homogenous sandstones sample decreased in a uniform manner as the axial load increased below the ultimate shear strength. As axial stress exceeds the radial confining stress, slight increase attributed to microcracks opening was noticed. For laminated sandstones, the scenario is quite different. Permeability shows exactly a similar trend of permeability drop as axial load increases due to inferred matrix compaction. At certain axial load, the permeability starts to increase due to inferred dilatancy of microcracks at the lamina faces and then drops again as axial load increases due to lamina compaction. If the axial load is further increased, pore collapses and grain-to-grain cementing breaks down into pore space followed by microcracks development predominantly parallel to the axial load leading to permeability enhancement. It has been concluded that absolute permeability changes due to lamination opening and closure as a result of loading magnitude and orientation. It is also concluded that permeability of the formation rock is affected by heterogeneity depending on the direction of lamination as well as the state of the stresses applied and loading type.

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Relative Permeabilities of Homogeneous and Heterogeneous Laminated Rock Samples under Hydrostatic and Triaxial Stresses

Cited by 2 publications

References 8 publications

DEM-LBM simulation of stress-dependent absolute and relative permeabilities in porous media

DEM-LBM simulation of stress-dependent absolute and relative permeabilities in porous media

Effect of triaxial in situ stresses and heterogeneities on absolute permeability of laminated rocks

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