<?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>1794-9165</journal-id>
<journal-title><![CDATA[Ingeniería y Ciencia]]></journal-title>
<abbrev-journal-title><![CDATA[ing.cienc.]]></abbrev-journal-title>
<issn>1794-9165</issn>
<publisher>
<publisher-name><![CDATA[Escuela de Ciencias y Humanidades y Escuela de Ingeniería de la Universidad EAFIT]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-91652020000100169</article-id>
<article-id pub-id-type="doi">10.17230/ingciencia.16.31.8</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Pore Structure Characteristics and Gas Storage Potential of the Cretaceous La Luna Formation, Middle Magdalena Valley Basin, Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Características de la estructura porosa y potencial de almacenamiento de gas de la Formación La Luna del Cretáceo, Cuenca del Valle Medio del Magdalena, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Casadiego-Quintero]]></surname>
<given-names><![CDATA[Efraín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ríos-Reyes]]></surname>
<given-names><![CDATA[Carlos Alberto]]></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>
<aff id="Af2">
<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>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>16</volume>
<numero>31</numero>
<fpage>169</fpage>
<lpage>205</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-91652020000100169&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-91652020000100169&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-91652020000100169&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The rocks of interest in the present study (mudstones) show inherently a heterogeneous pore-size distribution in the matrix. They can present organic and inorganic pores and the transport mechanism through pores is different, and, therefore, it is necessary to describe their organic and inorganic porosity. This work uses different microscopy techniques to characterize mudstones from the Galembo Member of the Cretaceous La Luna Formation, Middle Magdalena Valley Basin, Colombia. These rocks present several pore types, including interparticle pores due to flocculation of clay minerals, organoporosity due to burial and thermal maturity, intraparticle pores from organisms, intraparticle pores within mineral grains, and microchannels and microfractures. The existence of interconnected pores in such complex fracture-pore system provides effective pathways for primary gas migration and it also provides a storage space for the residual hydrocarbon in mudstones, which is important for the primary migration and storage in gas reservoir rocks. The pore connectivity is high and increases towards the top of the sedimentary sequence.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las rocas de interés en el presente estudio (lodolitas) muestran inherentemente una distribución heterogénea de tamaño de poro en la matriz. Pueden presentar poros orgánicos e inorgánicos y el mecanismo de transporte a través de los poros es diferente y, por lo tanto, es necesario describir su porosidad orgánica e inorgánica. Este trabajo recurre al uso de diferentes técnicas de microscopía para caracterizar las lodolitas del miembro de Galembo de la Formación La Luna del Cretáceo, Cuenca del Valle Medio del Magdalena, Colombia. Estas rocas presentan varios tipos de poros, incluidos los poros entre partículas debido a la floculación de los minerales arcillosos, la organoporosidad debido a la maduración térmica y el enterramiento, los poros intraparticulares de los organismos, los poros dentro de los granos minerales y los microcanales y microfracturas. La existencia de poros interconectados en este complejo sistema de poro-fractura proporciona vías efectivas para la migración de gas primario y también proporciona un espacio de almacenamiento para el hidrocarburo residual en las lodolitas, lo cual es importante para la migración primaria y el almacenamiento en rocas reservorio de gas. La conectividad de los poros es alta y aumenta hacia la parte superior de la secuencia sedimentaria.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Gas reservoir]]></kwd>
<kwd lng="en"><![CDATA[mineralogy]]></kwd>
<kwd lng="en"><![CDATA[petrography]]></kwd>
<kwd lng="en"><![CDATA[microstructural]]></kwd>
<kwd lng="en"><![CDATA[La Luna Formation]]></kwd>
<kwd lng="es"><![CDATA[Reservorio de gas]]></kwd>
<kwd lng="es"><![CDATA[mineralogía]]></kwd>
<kwd lng="es"><![CDATA[petrografía]]></kwd>
<kwd lng="es"><![CDATA[microestructural]]></kwd>
<kwd lng="es"><![CDATA[Formación La Luna.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Law]]></surname>
<given-names><![CDATA[B. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Curtis]]></surname>
<given-names><![CDATA[J. B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Introduction to unconventional petroleum systems]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>2007</year>
<volume>86</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>1851-2</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Josh]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Esteban]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Piane]]></surname>
<given-names><![CDATA[C. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Sarout]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Dewhurst]]></surname>
<given-names><![CDATA[D. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Clennell]]></surname>
<given-names><![CDATA[M. B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Laboratory characterization of shale properties]]></article-title>
<source><![CDATA[Journal of Petroleum Science and Engineering]]></source>
<year>2012</year>
<volume>88-89</volume>
<page-range>107-24</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Loucks]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Reed]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruppel]]></surname>
<given-names><![CDATA[S. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Hammes]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<source><![CDATA[Spectrum of pore types in siliceous mudstone in shale gas systems (Abstract)]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Passey]]></surname>
<given-names><![CDATA[Q. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bohacs]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Esch]]></surname>
<given-names><![CDATA[W. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Klimentidis]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Sinha]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[From oil-prone source rock to gas-producing shale reservoir-geologic and petrophysical characterization of unconventional shale gas reservoirs]]></article-title>
<source><![CDATA[International oil and gas conference and exhibition in China. Society of Petroleum Engineers]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sondergeld]]></surname>
<given-names><![CDATA[C. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Ambrose]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rai]]></surname>
<given-names><![CDATA[C. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Moncrieff]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Microstructural studies of gas shale: Society of Petroleum Engineers]]></article-title>
<source><![CDATA[SPE 131768 Unconventional Gas Conference, Pittsburgh (USA)]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barrero]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Pardo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Colombian sedimentary basins: Nomenclature, boundaries and petroleum geology, a new proposal]]></article-title>
<source><![CDATA[Agencia Nacional de Hidrocarburos]]></source>
<year>2007</year>
<volume>1</volume>
<page-range>92</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[L. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Podesta]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hatfield]]></surname>
<given-names><![CDATA[W. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Tanner]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[S. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Barker]]></surname>
<given-names><![CDATA[M. H.]]></given-names>
</name>
<name>
<surname><![CDATA[O&#8217;Donoghue]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Mohler]]></surname>
<given-names><![CDATA[C. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Dubois]]></surname>
<given-names><![CDATA[E. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Jacobs]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Goss]]></surname>
<given-names><![CDATA[C. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[General Geology and oil occurrences of the Middle Magdalena Valley, Colombia: South America]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Weeks]]></surname>
<given-names><![CDATA[L. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Habitat of Oil Symposium]]></source>
<year>1958</year>
<page-range>641-95</page-range><publisher-name><![CDATA[AAPG]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schamel]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Middle and Upper Magdalena Basins, Colombiain]]></article-title>
<source><![CDATA[Active Margin Basins]]></source>
<year>1991</year>
<page-range>283-301</page-range><publisher-name><![CDATA[AAPG]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Challenges and opportunities for the development of Shale resources in Colombia]]></source>
<year>2013</year>
<publisher-name><![CDATA[The University of Texas, Austin (USA)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zumberge]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Source Rocks of the La Luna Formation (Upper Cretaceous) in the Middle Magdalena Valley, Colombia]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Palacas]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Petroleum Geochemistry and Source Rock Potential of Carbonate Rocks]]></source>
<year>1984</year>
<volume>AAPG Special Volumes</volume>
<page-range>127-33</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramon]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Dzou]]></surname>
<given-names><![CDATA[L. I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Petroleum geochemistry of the Middle Magdalena Valley: Colombia]]></article-title>
<source><![CDATA[Organic Geochemistry]]></source>
<year>1999</year>
<volume>30</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>249-66</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rangel]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Parra]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Niño]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The La Luna Formation: chemostratigraphy and organic facies in the Middle Magdalena Basin]]></article-title>
<source><![CDATA[Organic Geochemistry]]></source>
<year>2000</year>
<volume>31</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1267-84</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aguilera]]></surname>
<given-names><![CDATA[R. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Sotelo]]></surname>
<given-names><![CDATA[V. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Burgos]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Arce]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mojica]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiménez]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Osorno]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Organic Geochemistry Atlas of Colombia: An Exploration Tool for Mature and Frontier Basins]]></article-title>
<source><![CDATA[Earth Sciences Research Journal]]></source>
<year>2009</year>
<volume>13</volume>
<page-range>1-174</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[E. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Unconventional gas shale assessment of La Luna Formation in the central and south areas of the Middle Magdalena Valley Basin, Colombia]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Norman, (USA) ]]></publisher-loc>
<publisher-name><![CDATA[University of Oklahoma]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Young]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Monaghan]]></surname>
<given-names><![CDATA[P. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Schweisberger]]></surname>
<given-names><![CDATA[R. T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Calculation of ages of hydrocarbons in oils - Physical chemistry applied to petroleum geochemistry I]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>1977</year>
<volume>61</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>573-600</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Talukdar]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Gallango]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruggiero]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Formaciones La Luna y Querecual: rocas madres de petróleo]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Espejo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ríos]]></surname>
<given-names><![CDATA[J. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Bellizzia]]></surname>
<given-names><![CDATA[N. P. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Pardo]]></surname>
<given-names><![CDATA[A. S. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Memorias VI Congreso Geológico Venezolano]]></source>
<year>1985</year>
<page-range>3606-42</page-range><publisher-loc><![CDATA[Caracas, Venezuela ]]></publisher-loc>
<publisher-name><![CDATA[Sociedad Venezolana de Geológos]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>[17]</label><nlm-citation citation-type="">
<collab>Google</collab>
<source><![CDATA[Google Earth]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B18">
<label>[18]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Piamonte]]></surname>
<given-names><![CDATA[D. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mayorga]]></surname>
<given-names><![CDATA[L. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Caracterización de Yacimientos Tipo Shale Gas y Oil Shale en La Formación La Luna en el Flanco Oriental de la Cuenca del Valle Medio del Magdalena (VMM), Santander, Colombia]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Bucaramanga, Colombia ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Industrial de Santander]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<label>[19]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Folk]]></surname>
<given-names><![CDATA[R. L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Petrology of Sedimentary Rocks]]></source>
<year>1974</year>
<publisher-loc><![CDATA[Austin ]]></publisher-loc>
<publisher-name><![CDATA[Hemphill Publishing Company]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<label>[20]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dunham]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Classification of Carbonate Rocks According to Depositional Texture]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Hamm]]></surname>
<given-names><![CDATA[W. E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Classification of Carbonate Rocks]]></source>
<year>1962</year>
<page-range>108-21</page-range><publisher-loc><![CDATA[AAPG Memoir ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B21">
<label>[21]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ingersoll]]></surname>
<given-names><![CDATA[R. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Bullard]]></surname>
<given-names><![CDATA[T. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Ford]]></surname>
<given-names><![CDATA[R. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Grimm]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Pickle]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Sares]]></surname>
<given-names><![CDATA[S. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of grain size on detrital modes: A test of the Gazzi-Dickinson point-counting method]]></article-title>
<source><![CDATA[Journal of Sedimentary Petrology]]></source>
<year>1984</year>
<volume>54</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>103-16</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>[22]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kretz]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Symbols for rock-forming minerals]]></article-title>
<source><![CDATA[American Mineralogist]]></source>
<year>1983</year>
<volume>68</volume>
<page-range>277-9</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>[23]</label><nlm-citation citation-type="book">
<source><![CDATA[Caracterización de reservorios de gas shale integrando datos multiescala: Caso estudio Miembro Galembo, Sección Aguablanca, Cuenca del Valle Medio del Magdalena]]></source>
<year>2014</year>
<publisher-loc><![CDATA[Colombia ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Industrial de Santander]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<label>[24]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bennett]]></surname>
<given-names><![CDATA[R. H.]]></given-names>
</name>
<name>
<surname><![CDATA[O&#8217;Brien]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Hulbert]]></surname>
<given-names><![CDATA[M. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determinants of clay and shale microfabric signatures: processes and mechanisms]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Bennett]]></surname>
<given-names><![CDATA[R. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Bryant]]></surname>
<given-names><![CDATA[W. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Hulbert]]></surname>
<given-names><![CDATA[M. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Chiou]]></surname>
<given-names><![CDATA[W. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Faas]]></surname>
<given-names><![CDATA[R. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Kasprowicz]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Lomenick]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[O&#8216;Brien]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Pamukcu]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Smart]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Weaver]]></surname>
<given-names><![CDATA[C. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Yamamoto]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Microstructure of Fine Grained Sediments: From Mud to Shale]]></source>
<year>1991</year>
<page-range>5-32</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Springer-Verlag]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<label>[25]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[O&#8217;Brien]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Slatt]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The fabrics of shales and mudstone, an overview]]></article-title>
<source><![CDATA[Proceedings of the Clay Minerals Society 27th Annual Meeting- 39th Annual Clay Minerals Conference, Missouri (USA)]]></source>
<year>1990</year>
</nlm-citation>
</ref>
<ref id="B26">
<label>[26]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Creaney]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Passey]]></surname>
<given-names><![CDATA[Q. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Recurring patterns of total organic carbon and source rock quality within a sequence stratigraphic framework]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>1993</year>
<volume>77</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>386-401</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>[27]</label><nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Skalinski]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Kenter]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Pore Typing Workflow for Complex Carbonate Systems]]></source>
<year></year>
<conf-name><![CDATA[ AAPG Annual Convention and Exhibition]]></conf-name>
<conf-date>may 2013</conf-date>
<conf-loc>Pittsburgh, USA </conf-loc>
</nlm-citation>
</ref>
<ref id="B28">
<label>[28]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Flemings]]></surname>
<given-names><![CDATA[P. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Day-Stirrat]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Germaine]]></surname>
<given-names><![CDATA[J. T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Insights into porescale controls on mudstone permeability through resedimentation experiments]]></article-title>
<source><![CDATA[Geology]]></source>
<year>2011</year>
<volume>39</volume>
<page-range>1011-4</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>[29]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Slatt]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[O&#8217;Brien]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pore types in the Barnett and Woodford gas shales: contribution to understanding gas storage and migration pathways in fine grained rocks]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>2011</year>
<volume>95</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>2017-30</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>[30]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Horsfield]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Schulz]]></surname>
<given-names><![CDATA[H. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Wirth]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Schreiber]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sherwood]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geochemical evolution of organic-rich shales with increasing maturity: a STXM and TEM study of the Posidonia Shale (Lower Toarcian, northern Germany)]]></article-title>
<source><![CDATA[Marine and Petroleum Geology]]></source>
<year>2012</year>
<volume>31</volume>
<page-range>70-89</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>[31]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chalmers]]></surname>
<given-names><![CDATA[G. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bustin]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Power]]></surname>
<given-names><![CDATA[I. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of gas shale pore systems by porosimetry, pycnometry, surface area, and field emission scanning electron microscopy/transmission electron microscopy image analyses: Examples from the Barnett, Woodford, Haynesville, Marcellus, and Doig uni]]></article-title>
<source><![CDATA[AAPG bulletin]]></source>
<year>2012</year>
<volume>96</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1099-119</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>[32]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Slatt]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Philip]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Abousleiman]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Perez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Portas]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Marfurt]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Madrid-Arroyo]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[OÂ´Brien]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Eslinger]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Baruch]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pore-to-regional-scale, integrated characterization workflow for unconventional gas shales]]></article-title>
<source><![CDATA[Shale reservoirs-Giant resources for the 21st century]]></source>
<year>2012</year>
<page-range>127-50</page-range><publisher-name><![CDATA[AAPG Memoir]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<label>[33]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Keller]]></surname>
<given-names><![CDATA[L. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Holzer]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Wepf]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Gasser]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[3d geometry and topology of pore pathways in Opalinus clay: implications for mass transport]]></article-title>
<source><![CDATA[Applied Clay Science]]></source>
<year>2011</year>
<volume>52</volume>
<page-range>85-95</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>[34]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Curtis]]></surname>
<given-names><![CDATA[M. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ambrose]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sondergeld]]></surname>
<given-names><![CDATA[C. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Rai]]></surname>
<given-names><![CDATA[C. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Microstructural investigation of gas shales in two and three dimensions using nanometer-scale resolution imaging]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>2012</year>
<volume>96</volume>
<page-range>665-77</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>[35]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Loucks]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Reed]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruppel]]></surname>
<given-names><![CDATA[S. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Jarvie]]></surname>
<given-names><![CDATA[D. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Morphology, genesis, and distribution of nanometer-scale pores in siliceous mudstones of the Mississippian Barnett Shale]]></article-title>
<source><![CDATA[Journal of Sedimentary Research]]></source>
<year>2009</year>
<volume>79</volume>
<page-range>848-61</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>[36]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Klaver]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Desbois]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Urai]]></surname>
<given-names><![CDATA[J. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Littke]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bib-sem study of the pore space morphology in early mature Posidonia Shale from the Hils area, Germany]]></article-title>
<source><![CDATA[International Journal of Coal Geology]]></source>
<year>2012</year>
<volume>103</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>12-25</page-range></nlm-citation>
</ref>
<ref id="B37">
<label>[37]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Loucks]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Reed]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruppel]]></surname>
<given-names><![CDATA[S. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Hammes]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>2012</year>
<volume>96</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1071-98</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>[38]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jarvie]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hill]]></surname>
<given-names><![CDATA[T. E. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Pollastro]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Unconventional shale-gas systems: The Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment]]></article-title>
<source><![CDATA[AAPG Bulletin]]></source>
<year>2007</year>
<volume>91</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>475-99</page-range></nlm-citation>
</ref>
<ref id="B39">
<label>[39]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Eltom]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Abdullatif]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Makkawi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Abdullraziq]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Microporosity in the Upper Jurassic Arab-D carbonate reservoir, central Saudi Arabia: an outcrop analogue study]]></article-title>
<source><![CDATA[Journal of Petroleum Geology]]></source>
<year>2013</year>
<volume>36</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>281-97</page-range></nlm-citation>
</ref>
<ref id="B40">
<label>[40]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gale]]></surname>
<given-names><![CDATA[J. F. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Holder]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Natural fractures in some US. shales and their importance for gas production]]></article-title>
<source><![CDATA[Petroleum Geology Conference Series]]></source>
<year>2010</year>
<volume>7.</volume>
<page-range>1131-40</page-range><publisher-name><![CDATA[Geological Society]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B41">
<label>[41]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Slatt]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Important Geological Properties of Unconventional Resource Shales]]></article-title>
<source><![CDATA[Central European Journal of Geosciences]]></source>
<year>2011</year>
<volume>3</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>435-48</page-range></nlm-citation>
</ref>
<ref id="B42">
<label>[42]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Xian]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Chenga]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Brittleness index prediction in shale gas reservoirs based on efficient network models]]></article-title>
<source><![CDATA[Journal of Natural Gas Science and Engineering]]></source>
<year>2016</year>
<volume>35</volume>
<page-range>673-85</page-range></nlm-citation>
</ref>
<ref id="B43">
<label>[43]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lou]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Calculation Method about Brittleness Index in Qijia Oil Field]]></article-title>
<source><![CDATA[IOSR Journal of Engineering (IOSRJEN)]]></source>
<year>2016</year>
<volume>6</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>14-9</page-range></nlm-citation>
</ref>
<ref id="B44">
<label>[44]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[F. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Gale]]></surname>
<given-names><![CDATA[J. F. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Screening criteria for shale-gas systems]]></article-title>
<source><![CDATA[Gulf Coast Association of Geological Societies Transactions]]></source>
<year>2009</year>
<volume>59</volume>
<page-range>779-93</page-range></nlm-citation>
</ref>
<ref id="B45">
<label>[45]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[X.-Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Feng]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Shen]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Shale rock physics model for analysis of brittleness index, mineralogy, and porosity in the Barnett Shale]]></article-title>
<source><![CDATA[Journal of Geophysics and Engineering]]></source>
<year>2013</year>
<volume>10</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>25006</page-range></nlm-citation>
</ref>
<ref id="B46">
<label>[46]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Slatt]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Abousleiman]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Merging sequence stratigraphy and geomechanics for unconventional gas shales]]></article-title>
<source><![CDATA[The Leading Edge, Special Section: Shales]]></source>
<year>2011</year>
<page-range>274-82</page-range></nlm-citation>
</ref>
<ref id="B47">
<label>[47]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dong]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Harris]]></surname>
<given-names><![CDATA[N. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Ayranci]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Twemlow]]></surname>
<given-names><![CDATA[C. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Nassichuk]]></surname>
<given-names><![CDATA[B. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Porosity characteristics of the Devonian Horn River shale, Canada: Insights from lithofacies classification and shale composition]]></article-title>
<source><![CDATA[International Journal of Coal Geology]]></source>
<year>2015</year>
<volume>141</volume>
<page-range>74-90</page-range></nlm-citation>
</ref>
<ref id="B48">
<label>[48]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Integrated geological characterization and distribution of the Salada member, La Luna Formation in the central area of The Middle Magdalena Basin, Colombia]]></source>
<year>2014</year>
<publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[University of Oklahoma]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B49">
<label>[49]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Butcher]]></surname>
<given-names><![CDATA[A. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Lemmens]]></surname>
<given-names><![CDATA[H. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Advanced SEM Technology Clarifies Nanoscale Properties Of Gas Accumulations In Shales]]></article-title>
<source><![CDATA[The American Oil &amp; Gas Reporter]]></source>
<year>2011</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
