<?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>S0122-53832017000100005</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Application of spectral inversion and fuzzy logic interpolation in post-stack resolution enhancement on a seismic volume of the Colombian llanos basin]]></article-title>
<article-title xml:lang="es"><![CDATA[Aplicación de la inversión espectral y la interpolación con lógica difusa en el aumento de resolución post-apilado en un volumen sísmico de la cuenca llanos de Colombia]]></article-title>
<article-title xml:lang="pt"><![CDATA[Aplicação da inversão espectral e a interpolação com lógica difusa no aumento de resolução pós-empilhamento em um volume sísmico da bacia llanos da Colômbia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almanza]]></surname>
<given-names><![CDATA[Ovidio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montes-Vides]]></surname>
<given-names><![CDATA[Luis Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Geociencias ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Física ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>6</volume>
<numero>5</numero>
<fpage>5</fpage>
<lpage>16</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53832017000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53832017000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53832017000100005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT To improve the stratigraphic interpretation of 3D seismic data it is pursued to increase the vertical resolution by means of a Spectral Inversion (Puryear &amp; Castagna, 2008; Qiu, Junhua, Xiaohui, Hu, &amp; Lei, 2016) and the lateral resolution using a fuzzy logic interpolation (Souverville et al., 2015). Both the Spectral Inversion using a genetic algorithm and the interpolation are implemented in Matlab®, and tested in synthetic data and in a high resolution digital image, where both algorithms showed good performance. Finally, when applied to the C7 unit of the Carbonera formation in a seismic volume of the Llanos Basin (Colombia), a seismic cube of greater resolution in space and time was obtained. The seismic attributes variance and sweetness were estimated before and after applying the Spectral Inversion and interpolation, noting that applying both gave higher interpretability to the stratigraphic facies. The interpretation of three different time slices allowed inferring formation environments that were validated with well information.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Para mejorar la interpretación estratigráfica de datos sísmicos 3D se procuró aumentar la resolución vertical mediante una inversión espectral (Puryear &amp; Castagna, 2008; Qiu, Junhua, Xiaohui, Hu, &amp; Lei, 2016) y la resolución lateral usando una interpolación de lógica difusa (Souverville et al., 2015). La inversión espectral mediante algoritmo genético y la interpolación se implementaron en Matlab®, y se probaron en datos sintéticos así como en una imagen digital de alta resolución, donde ambos algoritmos demostraron un buen desempeño. Finalmente, al aplicarse a un volumen sísmico de la Cuenca Llanos en el intervalo C7 de la Formación Carbonera (Colombia), se consiguió un cubo sísmico de mayor resolución en espacio y tiempo. Se estimaron los atributos sísmicos varianza y "sweetness" antes y después de aplicar la inversión espectral y la interpolación, observando que la aplicación de ambos daba mayor interpretabilidad a las facies estratigráficas. La interpretación de tres mapas sísmicos a diferentes tiempos ("time slices") permitió inferir ambientes de formación que fueron validados con información de pozo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO Visando melhorar a interpretação estratigráfica de dados sísmicos 3D procuramos aumentar a resolução vertical mediante uma inversão espectral (Puryear &amp; Castagna, 2008; Qiu, Junhua, Xiaohui, Hu, &amp; Lei, 2016) e a resolução lateral empregando uma interpolação de lógica difusa (Souverville et al., 2015). A inversão espectral mediante algoritmo genético e a interpolação foram implementadas em Matlab®, sendo testadas em dados sintéticos, bem como na imagem digital de alta resolução, onde ambos algoritmos demostraram um bom desempenho. Finalmente, ao ser aplicado a um volume sísmico da Bacia Llanos no intervalo C7 da Formação Carbonífera (Colombia), conseguimos um cubo sísmico de maior resolução em espaço e tempo. Foram calculados os atributos sísmicos variância e "sweetness" antes e depois da aplicação da inversão espectral e a interpolação, observando que a aplicação de ambos resultava em maior interpretabilidade às fácies estratigráficas. A interpretação de três mapas sísmicos a diferentes tempos ("time slices") permitiu inferir ambientes de formação que foram validados com informação de poço.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Spectral Inversion]]></kwd>
<kwd lng="en"><![CDATA[Fuzzy logic]]></kwd>
<kwd lng="en"><![CDATA[Genetic algorithm]]></kwd>
<kwd lng="en"><![CDATA[Seismic resolution]]></kwd>
<kwd lng="en"><![CDATA[Llanos basin]]></kwd>
<kwd lng="en"><![CDATA[Carbonera Formation]]></kwd>
<kwd lng="es"><![CDATA[Inversión espectral]]></kwd>
<kwd lng="es"><![CDATA[Lógica difusa]]></kwd>
<kwd lng="es"><![CDATA[Algoritmo Genético]]></kwd>
<kwd lng="es"><![CDATA[Resolución sísmica]]></kwd>
<kwd lng="es"><![CDATA[Cuenca Llanos]]></kwd>
<kwd lng="es"><![CDATA[Formación Carbonera]]></kwd>
<kwd lng="pt"><![CDATA[Inversão espectral]]></kwd>
<kwd lng="pt"><![CDATA[Lógica difusa]]></kwd>
<kwd lng="pt"><![CDATA[Algoritmo Genético]]></kwd>
<kwd lng="pt"><![CDATA[Resolução sísmica]]></kwd>
<kwd lng="pt"><![CDATA[Bacia Llanos]]></kwd>
<kwd lng="pt"><![CDATA[Formação Carbonífera]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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