AOT + Polyethylene Glycol Eutectics for enhanced oil recovery

Eutectic solvents are currently being proposed as useful chemicals for enhanced oil recovery (EOR). In this work, for the first time, the preparation of eutectics based on surfactants and polymers was proposed for this application. These chemicals can be tailored to offer the most desired properties...

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Detalhes bibliográficos
Autores: Gallego Rodríguez, Cristina, Somoza Cerviño, Alba, Rodríguez Martínez, Héctor, Soto Campos, Ana María
Formato: artículo
Fecha de publicación:2021
País:España
Recursos:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/44184
Acesso em linha:https://hdl.handle.net/10347/44184
Access Level:acceso abierto
Palavra-chave:Eutectic
AOT
PEG
EOR
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spelling AOT + Polyethylene Glycol Eutectics for enhanced oil recoveryGallego Rodríguez, CristinaSomoza Cerviño, AlbaRodríguez Martínez, HéctorSoto Campos, Ana MaríaEutecticAOTPEGEOREutectic solvents are currently being proposed as useful chemicals for enhanced oil recovery (EOR). In this work, for the first time, the preparation of eutectics based on surfactants and polymers was proposed for this application. These chemicals can be tailored to offer the most desired properties for oil recovery: water/oil interfacial tension reduction and increase of the aqueous phase viscosity, while concomitantly facilitating their handling due to their liquid character at ambient conditions. Sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and polyethylene glycol (PEG) of three different molecular weights (namely 600, 1000, and 2000 g/mol) were paired in a search for eutectic behaviors. Melting temperatures for all the systems were determined by differential scanning calorimetry. The most promising combination was AOT + PEG-600, which exhibited a melting point of 275 K and thermal stability up to 473 K at a 40:60 molar ratio. A promising value of 5.1 × 10−2 mN/m was obtained for the interfacial tension between the optimized formulation and crude oil. The formulation was tested in core-holder experiments to extract oil from a sandstone rock at room temperature, achieving an encouraging 34% of additional oil recovery after the secondary extraction.MDPIUniversidade de Santiago de Compostela. Departamento de Enxeñaría QuímicaUniversidade de Santiago de Compostela. Centro Interdisciplinar de Investigación en Tecnoloxías Ambientais (CRETUS)20212021-09-0220212021-09-02journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10347/44184reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PGC2018-097342-B-I00open accesshttp://purl.org/coar/access_right/c_abf2© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/441842026-06-15T12:47:27Z
dc.title.none.fl_str_mv AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
title AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
spellingShingle AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
Gallego Rodríguez, Cristina
Eutectic
AOT
PEG
EOR
title_short AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
title_full AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
title_fullStr AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
title_full_unstemmed AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
title_sort AOT + Polyethylene Glycol Eutectics for enhanced oil recovery
dc.creator.none.fl_str_mv Gallego Rodríguez, Cristina
Somoza Cerviño, Alba
Rodríguez Martínez, Héctor
Soto Campos, Ana María
author Gallego Rodríguez, Cristina
author_facet Gallego Rodríguez, Cristina
Somoza Cerviño, Alba
Rodríguez Martínez, Héctor
Soto Campos, Ana María
author_role author
author2 Somoza Cerviño, Alba
Rodríguez Martínez, Héctor
Soto Campos, Ana María
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade de Santiago de Compostela. Departamento de Enxeñaría Química
Universidade de Santiago de Compostela. Centro Interdisciplinar de Investigación en Tecnoloxías Ambientais (CRETUS)
dc.subject.none.fl_str_mv Eutectic
AOT
PEG
EOR
topic Eutectic
AOT
PEG
EOR
description Eutectic solvents are currently being proposed as useful chemicals for enhanced oil recovery (EOR). In this work, for the first time, the preparation of eutectics based on surfactants and polymers was proposed for this application. These chemicals can be tailored to offer the most desired properties for oil recovery: water/oil interfacial tension reduction and increase of the aqueous phase viscosity, while concomitantly facilitating their handling due to their liquid character at ambient conditions. Sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and polyethylene glycol (PEG) of three different molecular weights (namely 600, 1000, and 2000 g/mol) were paired in a search for eutectic behaviors. Melting temperatures for all the systems were determined by differential scanning calorimetry. The most promising combination was AOT + PEG-600, which exhibited a melting point of 275 K and thermal stability up to 473 K at a 40:60 molar ratio. A promising value of 5.1 × 10−2 mN/m was obtained for the interfacial tension between the optimized formulation and crude oil. The formulation was tested in core-holder experiments to extract oil from a sandstone rock at room temperature, achieving an encouraging 34% of additional oil recovery after the secondary extraction.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-09-02
2021
2021-09-02
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10347/44184
url https://hdl.handle.net/10347/44184
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PGC2018-097342-B-I00
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname:Universidad de Santiago de Compostela (USC)
instname_str Universidad de Santiago de Compostela (USC)
reponame_str Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
collection Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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