<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532019000300081</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v86n210.74983</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Laboratory study of cyclic liquid solvent injection process for heavy oil recovery through computed tomography]]></article-title>
<article-title xml:lang="es"><![CDATA[Estudio del proceso de inyección cíclica de solventes para la recuperación de crudo pesado mediante tomografía computarizada]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval-Martínez]]></surname>
<given-names><![CDATA[María Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Navarro]]></surname>
<given-names><![CDATA[Samuel Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander Facultad Fisicoquímica ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2019</year>
</pub-date>
<volume>86</volume>
<numero>210</numero>
<fpage>81</fpage>
<lpage>90</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532019000300081&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532019000300081&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532019000300081&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The cyclic solvents injection has been considered for years as an improved non-thermal enhanced oil recovery method for the recovery of heavy oil, which includes three stages: injection, soaking, and production. This paper describes a laboratory study with Computed Tomography and Nuclear Magnetic Resonance of a cyclic solvent injection process in a porous medium, using naphtha as a liquid diluent to recover a Colombian heavy oil in a porous medium at 84 °C. The core was scanned during the soaking time to determine the expansion behavior of the mixing zone by analyzing the density profiles obtained after each scan. It was also scanned after the production stage to observe the distribution of saturation in the porous medium after each cycle. Finally, the fluids recovered from porous medium were taken to a nuclear magnetic resonance equipment to determine the recovery factor.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La inyección cíclica de solventes ha sido considerada por años como un método de recobro mejorado no térmico para la recuperación de crudo pesado, que contempla tres etapas: inyección, remojo y producción. El presente trabajo describe un estudio de laboratorio con Tomografía Computarizada y Resonancia Magnética Nuclear de un proceso de inyección cíclica de solvente, usando nafta como diluyente líquido para recuperar un crudo pesado colombiano en uno medio poroso a 84 °C. El núcleo fue escaneado durante la etapa de remojo para analizar el comportamiento de expansión de la zona de mezcla mediante el análisis de los perfiles de densidad obtenidos después de cada escaneo, también fue escaneado después de la etapa de producción para observar la distribución de saturación en el medio poroso después de cada ciclo, y finalmente los efluentes recuperados en esta última etapa fueron llevados a un equipo de Resonancia Magnética Nuclear para cuantificar el aceite recuperado.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[heavy oil, enhanced recovery]]></kwd>
<kwd lng="en"><![CDATA[solvent injection]]></kwd>
<kwd lng="en"><![CDATA[computed tomography]]></kwd>
<kwd lng="en"><![CDATA[nuclear magnetic resonance.]]></kwd>
<kwd lng="es"><![CDATA[crudo pesado]]></kwd>
<kwd lng="es"><![CDATA[recobro mejorado]]></kwd>
<kwd lng="es"><![CDATA[inyección de solvente]]></kwd>
<kwd lng="es"><![CDATA[tomografía computarizada]]></kwd>
<kwd lng="es"><![CDATA[resonancia magnética nuclear.]]></kwd>
</kwd-group>
</article-meta>
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