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dc.contributor.authorEdvardsen, Laura
dc.contributor.authorEmmel, Benjamin Udo
dc.contributor.authorBhuiyan, Mohammad Hossain
dc.contributor.authorWenner, Sigurd
dc.contributor.authorGawel, Kamila
dc.contributor.authorTorsæter, Malin
dc.description.abstractIn this paper we ask the question whether or not electrochemically enhanced deposition of minerals can be utilized to repair leakage paths existing in cement plugs in wells. Electrical polarization of two electrodes may result in oxygen reduction and water electrolysis, where both processes change the local pH close to the two electrodes. The solution close to the anode is becoming acidic while close to the cathode it is becoming alkaline. Since solubility of many scaling minerals is pH dependent, precipitation of minerals on conductive surfaces can be induced by electrical polarization. We test whether cathodic polarization of conductive surfaces can be used to facilitate deposition of minerals from brines resembling reservoir fluids. As a model the reservoir formation water from the Gyda field was chosen. The electrochemically enhanced deposition at 23 and 120 °C from a synthetic Gyda brine was tested by polarizing at 5 V. The results show that cathodic polarization significantly enhanced precipitation of minerals from the synthetic Gyda brine.en_US
dc.publisherSINTEF Academic Pressen_US
dc.relation.ispartofTCCS–11. CO2 Capture, Transport and Storage. Trondheim 22nd–23rd June 2021. Short Papers from the 11th International Trondheim CCS Conference
dc.relation.ispartofseriesSINTEF Proceedings;7
dc.rightsCC BY 4.0*
dc.subjectWell Pluggingen_US
dc.titleElectrochemically Enhanced Deposition of Minerals from Synthetic Reservoir Brineen_US
dc.typePeer revieweden_US
dc.typeConference objecten_US
dc.rights.holder© 2021 The Authors. Published by SINTEF Academic Press.en_US
dc.subject.nsiVDP::Teknologi: 500en_US
dc.relation.projectNorges forskningsråd: 285568en_US

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