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dc.contributor.authorCardona, Alejandro
dc.contributor.authorSantamarina, Carlos
dc.date.accessioned2020-02-05T12:28:32Z
dc.date.available2020-02-05T12:28:32Z
dc.date.issued2020-01-04
dc.identifier.citationCardona, A., & Santamarina, J. C. (2020). Carbonate rocks: Matrix permeability estimation. AAPG Bulletin, 103(1), 131–144. doi:10.1306/05021917345
dc.identifier.doi10.1306/05021917345
dc.identifier.urihttp://hdl.handle.net/10754/661386
dc.description.abstractCarbonate rocks store half of the world’s proven oil reserves. Genesis and postdepositional diagenetic processes define the porous network topology and the matrix permeability. This study compiles a database of porosity, specific surface, mercury porosimetry, and permeability values extracted from published sources and complements the database through a focused experimental study. Specific surface and porosity combine to estimate the pore size (Dsur). Permeability versus Dsur data cluster along a single trend with a slope of 2 in a log–log scale, which is in agreement with the Kozeny–Carman model. Discordant data points correspond to samples with dual porosity or broad pore-size distributions with long tails, where flow channels along larger interconnected pores. Indeed, the detailed analysis of all the porosimetry data in the database shows that permeability correlates best with the pore size D80, that is, the 80th percentile in pore-size distributions. Once again, the best fit is a power function in terms of (D80)2, analogous to Kozeny–Carman. The prediction uncertainty using D80 is one order of magnitude and has the same degree of uncertainty as more complex models and analyses. This observation suggests an irreducible uncertainty of one order of magnitude in permeability estimation from index properties such as porosity, mercury porosimetry, and specific surface probably resulting from specimen preparation effects, inherent physical differences in permeation versus invasion, and difficulties in data interpretation. These estimates of permeability are most valuable when specimens are limited to small sizes, such as cuttings.
dc.description.sponsorshipSupport for this research was provided by the King Abdullah University of Science and Technology Endowment. G. E. Abelskamp edited the manuscript.
dc.publisherAmerican Association of Petroleum Geologists AAPG/Datapages
dc.relation.urlhttp://archives.datapages.com/data/doi/10.1306/05021917345
dc.rightsCopyright ©2020. The American Association of Petroleum Geologists. All rights reserved. Green Open Access. This paper is published under the terms of the CC-BY license.
dc.titleCarbonate rocks: Matrix permeability estimation
dc.typeArticle
dc.contributor.departmentAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
dc.contributor.departmentEnergy Resources and Petroleum Engineering
dc.contributor.departmentEnergy Resources and Petroleum Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAAPG Bulletin
dc.eprint.versionPublisher's Version/PDF
kaust.personCardona, Alejandro
kaust.personSantamarina, Carlos
refterms.dateFOA2020-02-05T12:28:57Z
dc.date.published-online2020-01-04
dc.date.published-print2020-01


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