<?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>S0122-53832018000200023</article-id>
<article-id pub-id-type="doi">10.29047/01225383.78</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[OPTIMAL CODING OF BLENDED SEISMIC SOURCES FOR 2D FULL WAVEFORM INVERSION IN TIME]]></article-title>
<article-title xml:lang="es"><![CDATA[CODIFICACIÓN ÓPTIMA DE FUENTES SISMICAS MEZCLADA PARA UNA INVERSIÓN EN TIEMPO DE ONDA COMPLETA 2D]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Katherine-A.]]></surname>
<given-names><![CDATA[Flórez,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sergio-Alberto]]></surname>
<given-names><![CDATA[Abreo,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ana-B.]]></surname>
<given-names><![CDATA[Ramírez,]]></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 ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>8</volume>
<numero>2</numero>
<fpage>23</fpage>
<lpage>32</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53832018000200023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53832018000200023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53832018000200023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Full Waveform Inversion (FWI) schemes are gradually becoming more common in the oil and gas industry, as a new tool for studying complex geological zones, based on their reliability for estimating velocity models. FWI is a non-linear inversion method that iteratively estimates subsurface characteristics such as seismic velocity, starting from an initial velocity model and the preconditioned data acquired. Blended sources have been used in marine seismic acquisitions to reduce acquisition costs, reducing the number of times that the vessel needs to cross the exploration delineation trajectory. When blended or simultaneous without previous de-blending or separation, stage data are used in the reconstruction of the velocity model with the FWI method, and the computational time is reduced. However, blended data implies overlapping single shot-gathers, producing interference that affects the result of seismic approaches, such as FWI or seismic image migration. In this document, an encoding strategy is developed, which reduces the overlap areas within the blended data to improve the final velocity model with the FWI method.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La inversión de onda completa (FWI, por sus siglas en inglés) ha llamado la atención de la comunidad de exploración de gas y petróleo, como una nueva herramienta para el estudio de zonas geológicas complejas, en donde es necesario el desarrollo de técnicas para la estimación de modelos de velocidad confiables. La inversión de onda completa es un método de inversión no lineal que iterativamente estima características del subsuelo como la velocidad sísmica, partiendo de un modelo inicial de velocidad y el dato adquirido en campo. Las fuentes blended o simultáneas han sido usadas en la adquisición sísmica marina con el fin de reducir los costos de adquisición, disminuyendo el número de veces que el buque de exploración debe pasar por la trayectoria delimitada de exploración. Cuando los datos blended son utilizados en la reconstrucción del modelo de velocidad empleando el método FWI, evitando la etapa previa de de-blending o separación, el tiempo de procesamiento es reducido. Sin embargo, un dato blended implica la superposición entre los disparos individuales contenidos en él, produciendo interferencia que afecta a el resultado final de la FWI. En este documento, se desarrolla una estrategia de codificación que disminuye las zonas de superposición dentro del dato blended con el fin de mejorar el modelo de velocidad final.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Minimum coherence]]></kwd>
<kwd lng="en"><![CDATA[Augmented Lagrangian]]></kwd>
<kwd lng="en"><![CDATA[Blended sources]]></kwd>
<kwd lng="en"><![CDATA[2D Full Waveform Inversion]]></kwd>
<kwd lng="es"><![CDATA[Mínima coherencia]]></kwd>
<kwd lng="es"><![CDATA[Lagrangiano aumentado]]></kwd>
<kwd lng="es"><![CDATA[Fuentes blended]]></kwd>
<kwd lng="es"><![CDATA[Inversión de onda completa 2D]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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