Impact of SO₄²⁻, Ca²⁺, and Mg²⁺ ions in Caspian Sea ion-engineered water on the rate of wettability alteration in carbonates,

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dc.contributor.authorMeruyet Bazhanova
dc.contributor.authorPeyman Pourafshary
dc.date.accessioned2025-08-19T12:40:01Z
dc.date.available2025-08-19T12:40:01Z
dc.date.issued2020-01-01
dc.description.abstractTuning salinity and concentrations of potential determining ions (Mg²⁺, Ca²⁺, SO₄²⁻) in Caspian Sea water can substantially speed up wettability alteration in carbonate rocks via the multi-ion exchange (MIE) mechanism. At 15 000 ppm salinity, Caspian Sea water changes contact angle from 86° to 35° in 2 days. A five-fold dilution achieves the same in 9 hours, and spiking Ca²⁺ and SO₄²⁻ further reduces the angle to 22° in 9 hours. Spontaneous imbibition tests show that oil production rates double with ion-engineered brine. Optimizing such brine compositions could make engineered water flooding in carbonate reservoirs more efficient and economically attractive., en
dc.identifier.citationBazhanova, M.; Pourafshary, P. (2020). J. Pet. Explor. Prod. Technol., 10, 3281–3293.en
dc.identifier.urihttps://nur.nu.edu.kz/handle/123456789/9625
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Petroleum Exploration and Production Technologyen
dc.rightsAll rights reserveden
dc.sourceJournal of Petroleum Exploration and Production Technology, 10, 3281–3293, (2020)en
dc.subjection-engineered water, low-salinity waterflooding, wettability alteration, Caspian Sea water, multi-ion exchange, spontaneous imbibition en
dc.titleImpact of SO₄²⁻, Ca²⁺, and Mg²⁺ ions in Caspian Sea ion-engineered water on the rate of wettability alteration in carbonates, en
dc.typeJournal Articleen

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