Surface Complexation Modeling of Calcite Zeta Potential Measurements in Brines with Mixed Potential Determining Ions (Ca2+, CO32-, Mg2+, SO42-) for Characterizing Carbonate Wettability

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dc.citation.firstpage169
dc.citation.journalTitleJournal of Colloid and Interface Science
dc.citation.lastpage179
dc.citation.volumeNumber506
dc.contributor.authorSong, Jin
dc.contributor.authorZeng, Yongchao
dc.contributor.authorWang, Le
dc.contributor.authorDuan, Xindi
dc.contributor.authorPuerto, Maura
dc.contributor.authorChapman, Walter G.
dc.contributor.authorBiswal, Sibani L.
dc.contributor.authorHirasaki, George J.
dc.date.accessioned2017-07-14T15:23:43Z
dc.date.available2017-07-14T15:23:43Z
dc.date.issued2017
dc.description.abstractThis study presents experiment and surface complexation modeling (SCM) of synthetic calcite zeta potential in brine with mixed potential determining ions (PDI) under various CO2 partial pressures. Such SCM, based on systematic zeta potential measurement in mixed brines (Mg2+, SO42−, Ca2+ and CO32−), is currently not available in the literature and is expected to facilitate understanding of the role of electrostatic forces in calcite wettability alteration. We first use a double layer SCM to model experimental zeta potential measurements and then systematically analyze the contribution of charged surface species. Calcite surface charge is investigated as a function of four PDIs and CO2 partial pressure. We show that our model can accurately predict calcite zeta potential in brine containing a combination of four PDIs and apply it to predict zeta potential in ultra-low and pressurized CO2 environments for potential application in enhanced oil recovery in carbonate reservoirs. Model prediction reveals that calcite surface will be positively charged in all considered brines in pressurized CO2 environment (>1 atm). The calcite zeta potential is sensitive to CO2 partial pressure in the various brine in the order of Na2CO3 > Na2SO4 > NaCl > MgCl2 > CaCl2 (Ionic strength = 0.1 M).
dc.identifier.citationSong, Jin, Zeng, Yongchao, Wang, Le, et al.. "Surface Complexation Modeling of Calcite Zeta Potential Measurements in Brines with Mixed Potential Determining Ions (Ca2+, CO32-, Mg2+, SO42-) for Characterizing Carbonate Wettability." <i>Journal of Colloid and Interface Science,</i> 506, (2017) Elsevier: 169-179. https://doi.org/10.1016/j.jcis.2017.06.096.
dc.identifier.digitalBiswal_SurfaceComplexationModeling
dc.identifier.doihttps://doi.org/10.1016/j.jcis.2017.06.096
dc.identifier.urihttps://hdl.handle.net/1911/95191
dc.language.isoeng
dc.publisherElsevier
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier.
dc.titleSurface Complexation Modeling of Calcite Zeta Potential Measurements in Brines with Mixed Potential Determining Ions (Ca2+, CO32-, Mg2+, SO42-) for Characterizing Carbonate Wettability
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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