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

Published online by Cambridge University Press:  02 April 2024

James J. Howard
James J. Howard*
Affiliation:
Department of Geology and Geophysics, Yale University, P.O. Box 6666, New Haven, CT 06511
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Abstract

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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 × 106 cm−1 than the adjacent massive shale lithofacies with a SA/V of 1.97 × 106 cm−1. 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.

Keywords

Illite/SmectiteShale fabricMercury porosimetry
Type
Research Article
Information
Clays and Clay Minerals , Volume 39 , Issue 4 , August 1991 , pp. 355 - 361
Copyright
Copyright © 1991, The Clay Minerals Society

References

Borst, R., 1982 Some effects of compaction and geological time on the pore parameters of argillaceous rocks Sedimentology 29 291 – 298.CrossRefGoogle Scholar
Dibble, W. E. and Tiller, W. A., 1981 Non-equilibrium water/rock interactions—I. Model for interface-controlled reactions Geochim. Cosmochim. Acta 45 79 – 92.CrossRefGoogle Scholar
Dullien, F. A. L., 1975 New network permeability model of porous media AlChE Journal 21 299 – 307.CrossRefGoogle Scholar
Eberl, D. and Srodon, J., 1988 Ostwald ripening and in-terparticle-diffraction effects for illite crystals Amer. Mineral. 73 1335 – 1345.Google Scholar
Glasmann, J. R., Larter, S., Briedis, N. A. and Lundegard, P. D., 1989 Shale diagenesis in the Bergen High area, North Sea Clays & Clay Minerals 37 97 – 112.CrossRefGoogle Scholar
Howard, J. J., Schultz, L. G., van Olphen, H. and Mumpton, F. A., 1987 Influence of shale fabric on illite/smec-tite diagenesis in the Oligocene Frio Formation, south Texas Proceedings of the International Clay Conference, Denver, 1985 Bloomington, Indiana The Clay Minerals Society 144 – 150.Google Scholar
Lane, A., Shah, N. and Conner, W. C., 1986 Measurement of the morphology of high-surface-area solids: Porosimetry as a percolation process J. Colloid Interface Sci. 109 235 – 242.CrossRefGoogle Scholar
Larson, R. G. and Morrow, N. R., 1981 Effects of sample size on capillary pressures in porous media Powder Technology 30 123 – 138.CrossRefGoogle Scholar
Lowell, S. and Shields, J. E., 1984 Powder Surface Area and Porosity .CrossRefGoogle Scholar
Nuhfer, E. B., Vinopal, R. J. and Klanderman, D. S. (1979) X-radiograph atlas of lithotypes and other structures in the Devonian shale sequence of West Virginia and Virginia: U.S. Dept. Energy Report METC/CR 79/27, 45 pp.Google Scholar
Ramseyer, K. and Boles, J. R., 1986 Mixed-layer illite/ smectite minerals in Tertiary sandstones and shales, San Joaquin Basin, California Clays & Clay Minerals 34 115 – 134.CrossRefGoogle Scholar
Sills, I. D., Aylmore, L. A. G. and Quirk, J. P., 1973 A comparison between mercury injection and nitrogen sorption as methods of determining pore size distributions Proc. Soil Sci. Soc. A. 37 535 – 537.CrossRefGoogle Scholar
Srodon, J., 1980 Precise identification of illite/smectite interstratifications by X-ray powder diffraction Clays & Clay Minerals 28 401 – 411.CrossRefGoogle Scholar
Srodon, J., 1984 X-ray identification of illitic materials Clays & Clay Minerals 32 337 – 349.CrossRefGoogle Scholar
Steefel, C. I. and Lasaga, A. C., 1990 Evolution of dissolution patterns: Permeability change due to coupled flow and reaction Chemical Modeling in Aqueous Systems II 416 212 – 225.CrossRefGoogle Scholar
Wall, G. and Brown, J., 1981 The determination of pore-size distributions from sorption isotherms and mercury penetration in interconnected pores: The application of percolation theory J. Colloid Interface Sci. 82 141 – 149.CrossRefGoogle Scholar
Whitney, G. and Northrop, H. R., 1987 Diagenesis and fluid flow in the San Juan Basin, New Mexico—Regional zonation in the mineralogy and stable isotope composition of clay minerals in sandstone Amer. Jour. Sci. 287 353 – 382.CrossRefGoogle Scholar
Winslow, D. N., 1984 Advances in experimental techniques for mercury intrusion porosimetry Surface and Colloid Sci. 13 259 – 287.CrossRefGoogle Scholar
Wyllie, M. and Splanger, M., 1952 Application of electrical resistivity measurements to the problem of fluid flow in porous media Amer. Assoc. Petrol. Geol. Bull. 36 359 – 403.Google Scholar