Predicting water permeability in sedimentary rocks from capillary imbibition and pore structure

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dc.contributorPetrología Aplicadaes
dc.contributorEconomía del Turismo, Recursos Naturales y Nuevas Tecnologías (INNATUR)es
dc.contributorGrupo de Investigación en Restauración Arquitectónica de la Universidad de Alicante. GIRAUA-CICOPes
dc.contributor.authorBenavente, David-
dc.contributor.authorPla, Concepción-
dc.contributor.authorCueto Mendoza, Nora-
dc.contributor.authorGalvañ Cortés, Sandra-
dc.contributor.authorMartínez Martínez, Javier-
dc.contributor.authorGarcía del Cura, María Ángeles-
dc.contributor.authorOrdóñez Delgado, Salvador-
dc.contributor.otherUniversidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambientees
dc.identifier.citationEngineering Geology. 2015, 195: 301-311. doi:10.1016/j.enggeo.2015.06.003es
dc.identifier.issn0013-7952 (Print)-
dc.identifier.issn1872-6917 (Online)-
dc.description.abstractIn this paper, absolute water permeability is estimated from capillary imbibition and pore structure for 15 sedimentary rock types. They present a wide range of petrographic characteristics that provide degrees of connectivity, porosities, pore size distributions, water absorption coefficients by capillarity and water permeabilities. A statistical analysis shows strong correlations among the petrophysical parameters of the studied rocks. Several fundamental properties are fitted into different linear and multiple expressions where water permeability is expressed as a generalized function of the properties. Some practical aspects of these correlations are highlighted in order to use capillary imbibition tests to estimate permeability. The permeability–porosity relation is discussed in the context of the influence of pore connectivity and wettability. As a consequence, we propose a generalized model for permeability that includes information about water fluid rate (water absorption coefficient by capillarity), water properties (density and viscosity), wetting (interfacial tension and contact angle) and pore structure (pore radius and porosity). Its application is examined in terms of the type of pores that contribute to water transport and wettability. The results indicate that the threshold pore radius, in which water percolates through rock, achieves the best description of the pore system. The proposed equation is compared against Carman–Kozeny's and Katz–Thompson's equations. The proposed equation achieves very accurate predictions of the water permeability in the range of 0.01 to 1000
dc.description.sponsorshipThis study was financed by the Spanish Ministry of Science and Innovation CGL2011-25162. A pre-doctoral research fellowship was awarded to C. Pla for this
dc.rights© 2015 Elsevier
dc.subjectAbsolute permeabilityes
dc.subjectPermeability predictiones
dc.subjectSpontaneous imbibitiones
dc.subjectCapillary absorptiones
dc.subjectFluid transport propertieses
dc.subject.otherPetrología y Geoquímicaes
dc.titlePredicting water permeability in sedimentary rocks from capillary imbibition and pore structurees
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