<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0122-5383</journal-id>
<journal-title><![CDATA[CT&F - Ciencia, Tecnología y Futuro]]></journal-title>
<abbrev-journal-title><![CDATA[C.T.F Cienc. Tecnol. Futuro]]></abbrev-journal-title>
<issn>0122-5383</issn>
<publisher>
<publisher-name><![CDATA[Instituto Colombiano del Petróleo (ICP) - ECOPETROL S.A.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-53832020000200085</article-id>
<article-id pub-id-type="doi">10.29047/01225383.259</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[USE OF NANOPARTICLES TO IMPROVE THERMOCHEMICAL RESISTANCE OF SYNTHETIC POLYMER TO ENHANCED OIL RECOVERY APPLICATIONS: A REVIEW]]></article-title>
<article-title xml:lang="es"><![CDATA[USO DE NANOPARTICULAS PARA MEJORAR LA RESISTENCIA TERMOQUÍMICA DE POLÍMEROS SINTÉTICOS EN APLICACIONES DE RECOBRO MEJORADO: REVISIÓN]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Cañas]]></surname>
<given-names><![CDATA[María-Carolina,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quintero-Perez]]></surname>
<given-names><![CDATA[Henderson-Iván,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castro-Garcia]]></surname>
<given-names><![CDATA[Rubén-Hernán,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Bohorquez]]></surname>
<given-names><![CDATA[Arnold R.,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[Bucaramanga Santander]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Ecopetrol S.A. - Instituto Colombiano del Petróleo (ICP)  ]]></institution>
<addr-line><![CDATA[ Santander]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>10</volume>
<numero>2</numero>
<fpage>85</fpage>
<lpage>97</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53832020000200085&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53832020000200085&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53832020000200085&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Partially Hydrolyzed Polyacrylamide (HPAM) is the polymer most used in chemical enhanced oil recovery (cEOR) processes and it has been implemented in several field projects worldwide. Polymer injection has shown to be an effective EOR process. However, it has not been implemented massively due to HPAM polymer's limitations, mostly related to thermal and chemical degradation caused by exposure at high temperatures and salinities (HTHS). As an alternative, a new generation of chemically stable monomers to improve the properties of HPAM has been assessed at laboratory and field conditions. However, the use of enhanced polymers is limited due to its larger molecular size, large-scale production, and higher costs. One of the alternatives proposed in the last decade to improve polymer properties is the use of nanoparticles, which due to their ultra-small size, large surface area, and highly reactive capacity, can contribute to reduce or avoid the degrading processes of HPAM polymers. Nanoparticles (NPs) can be integrated with the polymer in several ways, it being worth to highlight mixing with the polymer in aqueous solution or inclusion by grafting or chemical functionalization on the nanoparticle surface. This review focuses on hybrid nanomaterials based on SiO2 NPs and synthetic polymers with great EOR potential. The synthesis process, characterization, and the main properties for application in EOR processes, were reviewed and analyzed. Nanohybrids based on polymers and silica nanoparticles show promising results in improving viscosity and thermal stability compared to the HPAM polymer precursor. Furthermore, based on recent findings, there are great opportunities to implement polymer nanofluids in cEOR projects. This approach could be of value to optimize the technical-economic feasibility of projects by reducing the polymer concentration of using reasonable amounts of nanoparticles. However, more significant efforts are required to understand the impact of nanoparticle concentrations and injection rates to support the upscaling of this cEOR technology.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La poliacrilamida parcialmente hidrolizada (HPAM) es el polímero más usado en procesos de recuperación mejorada de petróleo por métodos químicos (cEOR) y ha sido implementado a escala piloto y comercial alrededor del mundo. La inyección de polímero muestra ser efectiva en la recuperación de petróleo, pero esta técnica no se ha implementado masivamente debido a limitaciones de los polímeros de tipo HPAM que incluyen la degradación térmica y química causada principalmente por su exposición a altas temperaturas y salinidades (HTHS). Como alternativa, una nueva generación de polímeros que incluyen monómeros químicamente estables para mejorar las propiedades del HPAM han sido evaluados en condiciones de laboratorio y campo. Sin embargo, el uso de estos polímeros está limitado por tratarse de moléculas de mayor tamaño, producción a gran escala y sus altos costos. Una de las alternativas propuestas en la última década para mejorar las propiedades del polímero es el uso de nanopartículas, que, debido a sus propiedades de ultra bajo tamaño, gran área superficial y capacidad reactiva podrían ayudar a mitigar o evitar los procesos de degradación que presentan los polímeros de tipo HPAM. Las nanopartículas (NPs) se pueden incluir en la matriz polimérica de varias maneras, destacando el mezclado con el polímero en solución acuosa o la inclusión mediante injerto o funcionalización química del polímero en la superficie de la nanopartícula. Esta revisión se enfoca en nanomateriales híbridos basados en NP de SiO2 y polímeros sintéticos con gran potencial para aplicaciones EOR. Los procesos de síntesis, caracterización y las principales propiedades para su aplicación en procesos de EOR fueron revisados y analizados. Nanohibridos basados en polímeros y nanopartículas de sílice muestran resultados prometedores en la estabilidad térmica y la viscosidad comparados con los polímeros precursores. Además, basados en hallazgos recientes, hay grandes oportunidades para implementar nanofluidos base polímero en proyectos de recobro mejorado de petróleo. Este enfoque podría ser de gran valor para optimizar la factibilidad técnico económica de los proyectos reduciendo la concentración de polímero requerida usando una cantidad razonable de nanopartículas. Sin embargo, mayores esfuerzos son requeridos para entender el impacto de la concentración de nanopartículas y las tasas de inyección como soporte al escalado como tecnología de recobro mejorado.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Nanomaterials]]></kwd>
<kwd lng="en"><![CDATA[Polymer Nanofluids]]></kwd>
<kwd lng="en"><![CDATA[Synthesis]]></kwd>
<kwd lng="en"><![CDATA[Synthetic Polymers]]></kwd>
<kwd lng="en"><![CDATA[Hydrolyzed Polyacrylamide (HPAM)]]></kwd>
<kwd lng="en"><![CDATA[Nanoparticles]]></kwd>
<kwd lng="en"><![CDATA[Thermal - Chemical Degradation]]></kwd>
<kwd lng="en"><![CDATA[Enhanced Oil Recovery (EOR)]]></kwd>
<kwd lng="es"><![CDATA[Nanomateriales]]></kwd>
<kwd lng="es"><![CDATA[Nanofluidos]]></kwd>
<kwd lng="es"><![CDATA[Sintesis]]></kwd>
<kwd lng="es"><![CDATA[Polimeros sinteticos]]></kwd>
<kwd lng="es"><![CDATA[Poliacrilamida Parcialmente Hidrolizada]]></kwd>
<kwd lng="es"><![CDATA[Nanoparticulas]]></kwd>
<kwd lng="es"><![CDATA[Degradacion termica-quimica]]></kwd>
<kwd lng="es"><![CDATA[Recuperacion mejorada de petroleo]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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