Measurement of the morphology of high-surface-area solids: porosimetry as a percolation process

Lane, Alan M.; Shah, N.; Conner, W. Curtis

doi:10.1016/0021-9797(86)90298-5

Cited by 27 publications

(13 citation statements)

References 7 publications

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“…This transformation assumes that the porous medium is a bundle of nonintersecting tubes, which is clearly an unreasonable assumption for most sedimentary rocks. The transformation to pore sizes also is misleading because mercury intrusion is a percolation phenomenon, where the filling of a network of pores occurs as a sequential process (Lane et al, 1986;Wall and Brown, 1981). In order for an interior pore to be filled, it must be connected to the outer surface by a Pore 0.1 microns Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Porosimetry Measurement of Shale Fabric and Its Relationship to Illite/Smectite Diagenesis

Howard

1991

Clays and clay miner.

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Abstract--The extent of illite/smectite (I/S) reactions is linked with quantitative measurements of shale fabric in a suite of samples from a lower Frio Formation well. Greater illitization of the I/S clays is found in laminated shales that possess a larger pore surface area/pore volume (SA/V) of 3.21 x 106 cm-~ than the adjacent massive shale lithofacies with a SA/V of 1.97 x 106 cm -~. Mean pore diameter in both shale lithologies is 0.0145 micrometers, though in the laminated shale distributions are skewed towards more smaller-sized pores. While no direct permeability measurements were made, estimates of permeability that are based on simple physical models using SA/V suggest that lower permeabilities are associated with laminated shales. The trend of greater illitization at higher SA/V values is contrary to expectations that reaction extent is enhanced by greater permeabilities, such as created by silt laminations in shale. The limitations of estimated permeabilities emphasize that porosimetry measurements of shale fabric are useful for estimating the access of material to all reaction sites, and do not just describe the effect of a few large pores that dominate permeability. Greater reaction extent in the laminated shales is associated with the accessibility of fluids to more pore space than in the massive shales.

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Section: Methodsmentioning

confidence: 99%

Porosimetry Measurement of Shale Fabric and Its Relationship to Illite/Smectite Diagenesis

Howard

1991

Clays and clay miner.

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“…In one of these, a portion of bonds in the given lattice is considered as pores and the occupied probability is related to the concept of porosity (Reyes, 1985). In the other, however, the overall lattice is occupied by pores (or pores/throats), and the intrusion and extrusion processes are envisioned as the formation of clusters for percolation theory (Lane et al, 1986). Our approach belongs to the former.…”

Section: Aicbe Journalmentioning

confidence: 99%

“…In this case the accessible probability is defined as the number fraction of the occupied bonds (or sites) connected to the external surface in the finite lattice ; Lane et al, 1986).…”

Section: Aicbe Journalmentioning

confidence: 99%

“…All occupied bonds are considered as pores of equal length. In this paper the probability, p , represents the accessible probability in the finite lattice (Lane et al, 1986;Lopez et al, 1988). The radius of each occupied bond is distributed according to the Rayleigh distribution function as follows:…”

Section: Modeling and Simulation Proceduresmentioning

confidence: 99%

“…Independent connection, which was described as a type of nonrandom heterogeneity (Wardlaw and McKellar, 1980) or of nonrandomness (Lane et al, 1986), is composed of trunklike macropores and branchlike micropores. After macropores are distributed accessibly, micropores can be connected to macropores and/or other micropores.…”

Section: Aiche Journal November 1990mentioning

confidence: 99%

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New hypotheses for Mercury porosimetry with percolation approach

Park

Ihm

1990

AIChE Journal

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New hypotheses of no coalescence and no entrapment are proposed for mercury intrusion and extrusion. Pore structures are represented by a two-dimensional lattice for bond percolation and the Rayleigh distribution function taken for the pore size distribution. Different modes of hysteresis are found with the new hypotheses and the effect of Churl-Young Park accessible probability on the hysteresis loop is analyzed. A bimodal Son-Ki Ihm size distribution with micropores and macropores is analyzed by Department of Chemical Engineering considering the extent of overlapping and the sequence of connection Korea Advanced Institute of Science between both distributions. Mercury entrapment is also predicted by and Technology considering the pressure difference between the applied and assigned Seoul, Korea pressures, as determined by the Washburn equation, as a parameter for mercury breakage. The applicability of the proposed hypotheses is demonstrated by showing that experimental data on sample could be well correlated.Vol. 36, No. 11 pore in the closed loop 3. Micropores or crevices, which are not considered in the lattice, play the role of dead-end pores.

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References

2011

Flow and Transport in Porous Media and Fractured Rock

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Measurement of the morphology of high-surface-area solids: porosimetry as a percolation process

Cited by 27 publications

References 7 publications

Porosimetry Measurement of Shale Fabric and Its Relationship to Illite/Smectite Diagenesis

Porosimetry Measurement of Shale Fabric and Its Relationship to Illite/Smectite Diagenesis

New hypotheses for Mercury porosimetry with percolation approach

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