<?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>S0012-73532021000400094</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v88n219.97439</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Pressure and pressure derivative interpretation of a well in a completed-perforated multilayer reservoir with crossflow]]></article-title>
<article-title xml:lang="es"><![CDATA[Interpretación de pruebas de presión y derivada de presión en un pozo completamente perforado en un yacimiento multicapa con flujo cruzado]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escobar]]></surname>
<given-names><![CDATA[Freddy Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navia]]></surname>
<given-names><![CDATA[José Jafet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suescún-Diaz]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Surcolombiana  ]]></institution>
<addr-line><![CDATA[Neiva ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Surcolombiana  ]]></institution>
<addr-line><![CDATA[Neiva Huila]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>88</volume>
<numero>219</numero>
<fpage>94</fpage>
<lpage>101</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532021000400094&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532021000400094&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532021000400094&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Various authors have introduced several models for the characterization of multilayer reservoirs. However, some have failed to provide results when the skin factor of the layers is negative. Therefore, in this work, a model applying the concept of the maximum effective hole diameter has been used to simulate pressure tests in multilayer reservoirs. The pressure behavior of such systems is similar to that of naturally fractured double porosity reservoirs. Then, using the unique features of the log-log plot of pressure and pressure derivative versus time, some expressions have been developed to characterize the reservoir. The equations are satisfactorily tested on three field examples. In this way, a more precise reservoir characterization would be achieved, which will imply better reservoir management.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Diversos autores han introducido varios modelos para la caracterización de yacimientos multicapas. Algunos modelos no proporcionan resultados cuando el factor de daño de las capas es negativo. En este trabajo, se utiliza un modelo que aplica el concepto de diámetro de pozo máximo efectivo para simular pruebas de presión en depósitos multicapa. El comportamiento de presión de tales sistemas es similar al de los yacimientos naturalmente fracturados de porosidad doble. Luego, utilizando algunas características únicas que se encuentran en la gráfica logarítmica de presión y derivada de presión versus tiempo, se desarrollan algunas expresiones para caracterizar el reservorio. Las ecuaciones se probaron satisfactoriamente en tres ejemplos de campo. De esta manera se lograría una caracterización de yacimiento más precisa que implicará una mejor administración del yacimiento.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[interporosity flow parameter]]></kwd>
<kwd lng="en"><![CDATA[TDS (Tiab´s Direct Synthesis) technique]]></kwd>
<kwd lng="en"><![CDATA[storativity coefficient]]></kwd>
<kwd lng="en"><![CDATA[semipermeability]]></kwd>
<kwd lng="es"><![CDATA[parámetro de flujo interporoso]]></kwd>
<kwd lng="es"><![CDATA[metodología TDS]]></kwd>
<kwd lng="es"><![CDATA[coeficiente de almacenaje]]></kwd>
<kwd lng="es"><![CDATA[semipermeabilidad]]></kwd>
</kwd-group>
</article-meta>
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