<?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>S0122-53832020000200099</article-id>
<article-id pub-id-type="doi">10.29047/01225383.272</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[POLYMERIC SURFACTANTS AS ALTERNATIVE TO IMPROVE WATERFLOODING OIL RECOVERY EFFICIENCY]]></article-title>
<article-title xml:lang="es"><![CDATA[SURFACTANTES POLIMÉRICOS COMO ALTERNATIVA PARA MEJORAR LA EFICIENCIA DE RECOBRO EN PROCESOS DE INYECCIÓN DE AGUA]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quintero-Perez]]></surname>
<given-names><![CDATA[Henderson-Ivan,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rondón-Anton]]></surname>
<given-names><![CDATA[Miguel-José,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jimenez]]></surname>
<given-names><![CDATA[Jaime-Alberto,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bermudez-Jaimes]]></surname>
<given-names><![CDATA[John-Hervin,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonzalez]]></surname>
<given-names><![CDATA[Julian-Alfredo,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[Jenny-Liset,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa-Leon]]></surname>
<given-names><![CDATA[Carlos,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manrique-Ventura]]></surname>
<given-names><![CDATA[Eduardo-José,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ecopetrol S.A. - Instituto Colombiano del Petróleo (ICP)  ]]></institution>
<addr-line><![CDATA[ Santander]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[Bucaramanga Santander]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Ecopetrol S.A Departamento de Tecnologías de Yacimientos y Recobro ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</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>99</fpage>
<lpage>113</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53832020000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53832020000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53832020000200099&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Chemical formulations, including surfactants, polymers, alkalis, or their combinations, are widely used in different oil recovery processes to improve water injection performance. However, based on challenging profit margins in most mature waterfloods in Colombia and overseas, it is necessary to explore alternatives that could offer better performance and greater operational flexibility than the conventional technologies used for enhanced oil recovery (EOR) processes. Polymeric surfactants are compounds widely used in the manufacture of domestic and industrial cleaning, pharmaceutical, cosmetic, and food products. These compounds represent an interesting alternative as they can simultaneously increase the viscosity in water solution and reduce the interfacial tension (IFT) in the water/oil system, which would increase the efficiency of EOR processes. This article shows a methodological evaluation through laboratory studies, numerical reservoir simulation, and conceptual engineering design to apply polymeric surfactants (Block Copolymer Polymeric Surfactants or BCPS) as additives to improve efficiency in water injection processes. Block copolymer type products of ethylene oxide (EO) - propylene oxide (PO) -ethylene oxide (EO) in aqueous solution were studied to determine their rheological and surfactant behavior under the operating conditions of a Colombian field. In the conditions studied, these products allow to reduce the interfacial tension up to 2x10-1 mN/m values and also cause a shear-thinning rheological behavior following the power law at very low shear rates (0.1 s-1 - 1 s-1), which corresponds to an increase up to three orders of magnitude in the capillary number (Nc). The IFT and the viscosity reached are maintained in wide ranges of salinity, BCPS concentration, and shear rates, making it a robust performance formulation. In a model porous medium, BCPS tested have moderate adsorption, less than conventional surfactants but higher than HPAM polymers, in any way allowing a favorable wettability condition. Additionally, it was observed that they offer a resistance factor up to 16 times, causing greater displacement efficiency than water injection, allowing better sweeping in low permeability areas without injectivity restrictions. Numerical simulation shows that it is possible to reach incremental production up to 238,5 TBO by injecting a continuous slug of 0.15 pore volumes of BCPS and HPAM, each with 2,000 ppm concentration and a flow rate of 2,500 BPD. As BCPS are simple handling and dilution products, these could be injected directly in water injection flow using a high precision dosing pump with high pressure and flow rate operational variables.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Formulaciones químicas incluyendo surfactantes, polímeros, álcalis o combinaciones de los mismos, han sido ampliamente usadas en diferentes procesos de recobro mejorado de petróleo para hacer más eficientes los procesos de inyección de agua. Sin embargo, en función de los retos del bajo margen de rentabilidad de la mayoría de proyectos maduros de inyección de agua en Colombia y en el mundo, se hace necesario explorar alternativas que ofrezcan mejor desempeño y mayor flexibilidad operativa que las tecnologías convencionales para procesos de recobro. Los surfactantes poliméricos son compuestos ampliamente usados para la elaboración de productos domésticos e industriales de limpieza, farmacéuticos, cosméticos y alimentos. Estos compuestos representan una interesante alternativa, ya que pueden proveer simultáneamente un incremento en la viscosidad del agua y causar una reducción de la tensión interfacial en sistemas agua/aceite, lo cual aumentaría la eficiencia de los procesos de recobro mejorado de petróleo. Este artículo describe una evaluación metodológica a través de estudios de laboratorio, simulación numérica de yacimiento e ingeniería conceptual de la aplicación de surfactantes poliméricos como aditivos para mejorar la eficiencia en procesos de inyección de agua. Productos de tipo copolímero en bloques óxido de etileno (EO) - óxido de propileno (PO) - óxido de etileno (EO) en solución acuosa (BCPS) fueron estudiados para determinar su comportamiento reológico y poder tensioactivo en condiciones de aplicación de yacimiento Colombiano. Bajo las condiciones evaluadas estos productos permiten reducir la tensión interfacial (IFT) hasta el orden de 2x10-1mN/m con un comportamiento reológico pseudoplastico que sigue la ley de potencia en esfuerzos de corte muy bajos (0,1 s-1 - 1 s-1), lo cual corresponde con un aumento de hasta tres órdenes de magnitud en el número capilar. La tensión interfacial y la viscosidad alcanzada se mantienen en amplios rangos de salinidad, concentración de producto y esfuerzos de corte, haciéndola una formulación de desempeño robusto. En medio poroso modelo, estos productos tienen adsorción moderada, menor que los surfactantes convencionales, pero mayor que las poliacrilamidas parcialmente hidrolizadas (HPAM), permitiendo la obtención de una condición de mojabilidad favorable. Adicionalmente, se observó que ofrecen un factor de resistencia de hasta 16 veces causando una mayor eficiencia de desplazamiento comparada con la inyección agua, permitiendo barrer mejor las zonas de baja permeabilidad sin restricción de inyectividad en las condiciones evaluadas. La simulación numérica permitió establecer que se puede alcanzar una producción incremental de petróleo de hasta 238500 barriles correspondiente a 8,2% de factor de recobro incremental inyectando un bache de BCPS seguido por un bache de HPAM de 0,15 VP cada uno a una concentración de 2000 ppm y tasa de flujo de 2500 BPD. Tratándose de un aditivo de fácil manejo y disolución, el producto puede ser dosificado directamente en la línea de inyección de agua hacia el pozo, por medio de una bomba dosificadora de alta precisión y con variables operativas de alto caudal y presión.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Polymeric surfactants]]></kwd>
<kwd lng="en"><![CDATA[Amphiphilic Polymers]]></kwd>
<kwd lng="en"><![CDATA[Enhanced Oil Recovery]]></kwd>
<kwd lng="en"><![CDATA[EOR]]></kwd>
<kwd lng="en"><![CDATA[Chemical flooding]]></kwd>
<kwd lng="en"><![CDATA[Waterflooding]]></kwd>
<kwd lng="en"><![CDATA[Experimental Feasibility]]></kwd>
<kwd lng="en"><![CDATA[Numerical Simulation]]></kwd>
<kwd lng="en"><![CDATA[Conceptual Design]]></kwd>
<kwd lng="es"><![CDATA[Surfactantes polimericos]]></kwd>
<kwd lng="es"><![CDATA[Polimeros anfifilicos]]></kwd>
<kwd lng="es"><![CDATA[Recobro mejorado de petroleo| Inyeccion de quimicos]]></kwd>
<kwd lng="es"><![CDATA[Inyeccion de agua]]></kwd>
<kwd lng="es"><![CDATA[Factibilidad experimental]]></kwd>
<kwd lng="es"><![CDATA[Simulacion numerica]]></kwd>
<kwd lng="es"><![CDATA[Diseno conceptual]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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<label>[48]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fermino]]></surname>
<given-names><![CDATA[T. Z.,]]></given-names>
</name>
<name>
<surname><![CDATA[Awano]]></surname>
<given-names><![CDATA[C. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Moreno]]></surname>
<given-names><![CDATA[L. X.]]></given-names>
</name>
<name>
<surname><![CDATA[Vollet]]></surname>
<given-names><![CDATA[D. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Vicente]]></surname>
<given-names><![CDATA[F. S. de]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Structure and thermal stability in hydrophobic Pluronic F127-modified silica aerogels]]></article-title>
<source><![CDATA[Microporous and Mesoporous Materials]]></source>
<year>2018</year>
<numero>267</numero>
<issue>267</issue>
<page-range>242-8</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
