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Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition

In this study, a mechanistic and comprehensive examination of the impact of the scale formation situation of different diluted seawater levels was conducted to investigate the influence of important factors on the performance and efficiency of low salinity water. To clarify the effective participati...

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Autores principales: Bijani, Masoud, Khamehchi, Ehsan, Shabani, Mehdi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415348/
https://www.ncbi.nlm.nih.gov/pubmed/37563175
http://dx.doi.org/10.1038/s41598-023-40067-y
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author Bijani, Masoud
Khamehchi, Ehsan
Shabani, Mehdi
author_facet Bijani, Masoud
Khamehchi, Ehsan
Shabani, Mehdi
author_sort Bijani, Masoud
collection PubMed
description In this study, a mechanistic and comprehensive examination of the impact of the scale formation situation of different diluted seawater levels was conducted to investigate the influence of important factors on the performance and efficiency of low salinity water. To clarify the effective participating mechanisms, scale precipitation by compatibility test, field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDX) analysis, zeta potentials as surface charge, ion concentration changes, contact angle, pH, CO(2) concentration, electrical conductivity, and ionic strength were analyzed. The results showed that increasing the dilution time to the optimal level (10 times-diluted seawater (SW#10D)) could effectively reduce the amount of severe precipitation of calcium carbonate (CaCO(3)) and calcium sulfate (CaSO(4)) scales. However, the reduction in CaCO(3) scale precipitation (due to mixing different time diluted seawater with formation brine) and its effect on the wettability alteration (due to the change in surface charge of OLSW/oil and sandstone/OLSW) had higher impacts. The zeta potential results have shown that OLSW with optimum salinity, dilution, and ionic composition compared to different low salinity water compositions could change the surface charge of OLSW/oil/rock (− 16.7 mV) and OLSW/rock (− 10.5 mV) interfaces toward an extra negatively charged. FESEM and contact angle findings confirmed zeta potential results, i.e. OLSW was able to make sandstone surface more negative with diluting seawater and wettability changes from oil-wet toward water-wet. As a result, SW#10D was characterized by minimum scaling tendency and scale deposition (60 mg/l), maximum surface charge of OLSW/oil/rock (− 16.7 mV), and the potential of incremental oil recovery due to wettability alteration toward more water-wetness (the oil/rock contact angle ~ 50.13°) compared with other diluted seawater levels.
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spelling pubmed-104153482023-08-12 Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition Bijani, Masoud Khamehchi, Ehsan Shabani, Mehdi Sci Rep Article In this study, a mechanistic and comprehensive examination of the impact of the scale formation situation of different diluted seawater levels was conducted to investigate the influence of important factors on the performance and efficiency of low salinity water. To clarify the effective participating mechanisms, scale precipitation by compatibility test, field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDX) analysis, zeta potentials as surface charge, ion concentration changes, contact angle, pH, CO(2) concentration, electrical conductivity, and ionic strength were analyzed. The results showed that increasing the dilution time to the optimal level (10 times-diluted seawater (SW#10D)) could effectively reduce the amount of severe precipitation of calcium carbonate (CaCO(3)) and calcium sulfate (CaSO(4)) scales. However, the reduction in CaCO(3) scale precipitation (due to mixing different time diluted seawater with formation brine) and its effect on the wettability alteration (due to the change in surface charge of OLSW/oil and sandstone/OLSW) had higher impacts. The zeta potential results have shown that OLSW with optimum salinity, dilution, and ionic composition compared to different low salinity water compositions could change the surface charge of OLSW/oil/rock (− 16.7 mV) and OLSW/rock (− 10.5 mV) interfaces toward an extra negatively charged. FESEM and contact angle findings confirmed zeta potential results, i.e. OLSW was able to make sandstone surface more negative with diluting seawater and wettability changes from oil-wet toward water-wet. As a result, SW#10D was characterized by minimum scaling tendency and scale deposition (60 mg/l), maximum surface charge of OLSW/oil/rock (− 16.7 mV), and the potential of incremental oil recovery due to wettability alteration toward more water-wetness (the oil/rock contact angle ~ 50.13°) compared with other diluted seawater levels. Nature Publishing Group UK 2023-08-10 /pmc/articles/PMC10415348/ /pubmed/37563175 http://dx.doi.org/10.1038/s41598-023-40067-y Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Bijani, Masoud
Khamehchi, Ehsan
Shabani, Mehdi
Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
title Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
title_full Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
title_fullStr Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
title_full_unstemmed Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
title_short Optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
title_sort optimization of salinity and composition of injected low salinity water into sandstone reservoirs with minimum scale deposition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415348/
https://www.ncbi.nlm.nih.gov/pubmed/37563175
http://dx.doi.org/10.1038/s41598-023-40067-y
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