Measuring in-situ capillary pressure of a flowing foam system in porous media

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dc.citation.firstpage321en_US
dc.citation.journalTitleJournal of Colloid and Interface Scienceen_US
dc.citation.lastpage330en_US
dc.citation.volumeNumber621en_US
dc.contributor.authorVavra, Ericen_US
dc.contributor.authorPuerto, Mauraen_US
dc.contributor.authorBai, Chutianen_US
dc.contributor.authorMa, Kunen_US
dc.contributor.authorMateen, Khaliden_US
dc.contributor.authorBiswal, Lisaen_US
dc.contributor.authorHirasaki, Georgeen_US
dc.date.accessioned2022-05-25T14:50:00Zen_US
dc.date.available2022-05-25T14:50:00Zen_US
dc.date.issued2022en_US
dc.description.abstractHypothesis: Capillary pressure (Pc) is an intrinsic property of aqueous foams that has been demonstrated to play an important role in lamella rupture. Thus, directly measuring in-situ capillary pressure of a foam flowing through porous media has potential to greatly improve understanding of this complex process. Experiments: A capillary pressure probe was constructed and validated. Direct measurements of capillary pressure were made at ambient conditions during foam quality scan experiments in a transparent 1.41 × 10−10 m2 (143-Darcy) homogenous sand pack conducted at constant gas velocity. The foam texture was simultaneously visualized at the wall of the sand pack via microscope. Findings: In the low-quality regime, a plateauing trend in Pc was identified. In-situ microscopic visualization of the flowing foam revealed that gas bubbles were convecting with a fine discontinuous texture while Pc is at the plateau value Ppc. In the high-quality regime, the measured capillary pressures first decreased with increasing quality before increasing again at the driest qualities. These changes in Pc correlated with foam bubbles becoming coarser with increasing injected gas fractional flow before transitioning to continuous-gas flow at the slowest and driest injection conditions. These findings have been previously unreported for steady-state flow conditions and shall have significant implications for the general physical description of foam flow in porous media.en_US
dc.identifier.citationVavra, Eric, Puerto, Maura, Bai, Chutian, et al.. "Measuring in-situ capillary pressure of a flowing foam system in porous media." <i>Journal of Colloid and Interface Science,</i> 621, (2022) Elsevier: 321-330. https://doi.org/10.1016/j.jcis.2022.04.023.en_US
dc.identifier.doihttps://doi.org/10.1016/j.jcis.2022.04.023en_US
dc.identifier.urihttps://hdl.handle.net/1911/112401en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier.en_US
dc.titleMeasuring in-situ capillary pressure of a flowing foam system in porous mediaen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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