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dc.contributor.authorSugar, Antonia
dc.contributor.authorSerag, Maged F.
dc.contributor.authorButtner, Ulrich
dc.contributor.authorFahs, Marwan
dc.contributor.authorHabuchi, Satoshi
dc.contributor.authorHoteit, Hussein
dc.identifier.citationSugar, A., Serag, M., Buttner, U., Fahs, M., Habuchi, S., & Hoteit, H. (2023). Experimental and numerical investigation of polymer pore-clogging in micromodels. Scientific Reports, 13(1).
dc.description.abstractPolymers have been used effectively in the Oil & Gas Industry for a variety of field applications, such as enhanced oil recovery (EOR), well conformance, mobility control, and others. Polymer intermolecular interactions with the porous rock, in particular, formation clogging and the associated alterations to permeability, is a common problem in the industry. In this work, fluorescent polymers and single-molecule imaging are presented for the first time to assess the dynamic interaction and transport behavior of polymer molecules utilizing a microfluidic device. Pore-scale simulations are performed to replicate the experimental observations. The microfluidic chip, also known as a "Reservoir-on-a-Chip" functions as a 2D surrogate to evaluate the flow processes that take place at the pore-scale. The pore-throat sizes of an oil-bearing reservoir rock, which range from 2 to 10 nm, are taken into consideration while designing the microfluidic chip. Using soft lithography, we created the micromodel from polydimethylsiloxane (PDMS). The conventional use of tracers to monitor polymers has a restriction due to the tendency of polymer and tracer molecules to segregate. For the first time, we develop a novel microscopy method to observe the dynamic behavior of polymer pore-clogging and unclogging processes. We provide direct dynamic observations of polymer molecules during their transport within the aqueous phase and their clustering and accumulations. Pore-scale simulations were carried out to simulate the phenomena using a finite-element simulation tool. The simulations revealed a decline in flow conductivity over time within the flow channels that experienced polymer accumulation and retention, which is consistent with the experimental observation of polymer retention. The performed single-phase flow simulations allowed us to assess the flow behavior of the tagged polymer molecules within the aqueous phase. Additionally, both experimental observation and numerical simulations are used to evaluate the retention mechanisms that emerge during flow and how they affect apparent permeability. This work provides new insights to assessing the mechanisms of polymer retention in porous media.
dc.description.sponsorshipThe authors would like to express gratitude to King Abdullah University of Science & Technology for funding and supporting this work.
dc.publisherSpringer Science and Business Media LLC
dc.rightsArchived with thanks to Scientific reports under a Creative Commons license, details at:
dc.titleExperimental and numerical investigation of polymer pore-clogging in micromodels.
dc.contributor.departmentEnergy Resources and Petroleum Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentBiological and Environmental Science and Engineering (BESE) Division
dc.contributor.departmentBioscience Program
dc.contributor.departmentAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
dc.contributor.departmentNanofabrication Core Lab
dc.identifier.journalScientific reports
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionInstitut Terre et Environnement de Strasbourg, Université de Strasbourg, CNRS, ENGEES, Strasbourg, France.
kaust.personSugar, Antonia
kaust.personSerag, Maged F.
kaust.personButtner, Ulrich
kaust.personHabuchi, Satoshi
kaust.personHoteit, Hussein

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