Linking pore-scale interfacial curvature to column-scale capillary pressure Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/05741s333

This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at:  http://www.journals.elsevier.com/advances-in-water-resources/. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work.

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  • Synchrotron-based tomographic datasets of oil–water drainage and imbibition cycles have been analyzed to quantify phase saturations and interfacial curvature as well as connected and disconnected fluid configurations. This allows for close observation of the drainage and imbibition processes, assessment of equilibrium states, and studying the effects of fluid phase disconnection and reconnection on the resulting capillary pressures and interfacial curvatures. Based on this analysis estimates of capillary pressure calculated from interfacial curvature can be compared to capillary pressure measured externally with a transducer. Results show good agreement between curvature-based and transducer-based measurements when connected phase interfaces are considered. Curvature measurements show a strong dependence on whether an interface is formed by connected or disconnected fluid and the time allowed for equilibration. The favorable agreement between curvature-based and transducer-based capillary pressure measurements shows promise for the use of image-based estimates of capillary pressure for interfaces that cannot be probed with external transducers as well as opportunities for a detailed assessment of interfacial curvature during drainage and imbibition.
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  • Armstrong, R., Porter, M., & Wildenschild, D. (2012). Linking pore-scale interfacial curvature to column-scale capillary pressure. ADVANCES IN WATER RESOURCES, 46, 55-62. doi: 10.1016/j.advwatres.2012.05.009
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  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2012-10-12T00:40:25Z (GMT) No. of bitstreams: 1 WildenschildDortheChemicalBiologicalEnvironmentalEngineeringLinkingPoreScale.pdf: 909060 bytes, checksum: e304ac6a4117218e92e8ea2be42caf09 (MD5)
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2012-10-11T22:40:53Z No. of bitstreams: 1 WildenschildDortheChemicalBiologicalEnvironmentalEngineeringLinkingPoreScale.pdf: 909060 bytes, checksum: e304ac6a4117218e92e8ea2be42caf09 (MD5)
  • description.provenance : Made available in DSpace on 2012-10-12T00:40:25Z (GMT). No. of bitstreams: 1 WildenschildDortheChemicalBiologicalEnvironmentalEngineeringLinkingPoreScale.pdf: 909060 bytes, checksum: e304ac6a4117218e92e8ea2be42caf09 (MD5) Previous issue date: 2012-09

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