<?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>0016-7169</journal-id>
<journal-title><![CDATA[Geofísica internacional]]></journal-title>
<abbrev-journal-title><![CDATA[Geofís. Intl]]></abbrev-journal-title>
<issn>0016-7169</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geofísica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-71692021000300241</article-id>
<article-id pub-id-type="doi">10.22201/igeof.00167169p.2021.60.3.2041</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Application of Quantitative Electromagnetic Technology to Assess Coating Integrity of Pipelines in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgado-Rodríguez]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mousatov]]></surname>
<given-names><![CDATA[Aleksandr]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nakamura-Labastida]]></surname>
<given-names><![CDATA[Edgar Kiyoshi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shevnin]]></surname>
<given-names><![CDATA[Vladimir]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Potosino de Investigación Científica y Tecnológica  ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Petróleo  ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Moscow State University Faculty of Geology Department of Geophysics]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Rusia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>60</volume>
<numero>3</numero>
<fpage>241</fpage>
<lpage>257</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692021000300241&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692021000300241&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692021000300241&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract There are several surface inspection methods to evaluate the integrity of the steel pipe coating, obtaining acceptable qualitative results in some soil types and low complexity pipeline systems. However, these methods do not determine the necessary parameters for a quantitative evaluation of coating quality. The Mexican Petroleum Institute has developed Surface Electromagnetic Pipeline Inspection (SEMPI) technology for the quantitative assessment of buried pipeline coating integrity. SEMPI is a theory-based technology that enables the development of instrumentation, field methodology, as well as data processing and interpretation techniques. The application of SEMPI consists of two stages: regional and local. The regional stage includes magnetic field, voltage and, soil resistivity (&#961;s) measurements, where the main result is the determination of the electrical resistance of the coating (Tc) along the pipeline as an indicating parameter of the coating quality. A scale signalized from Tc data allows classifying the quality of pipe coating as good (green), fair (yellow) and poor (red). The local stage includes detailed electric field measurements of on anomalous pipeline sections (Tc &lt; 50 Ohm.m), locating damage in the coating with a detection accuracy of the ± 0.5 m. The equivalent unlined (holiday) area per meter of the inspected pipeline is calculated during the local stage. This work presents successful results from the implementation of regional and local stages of SEMPI technology in two pipelines located in the southeast region of Mexico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Existen varios métodos de inspección superficial para evaluar la integridad del revestimiento de los ductos metálicos, obteniendo resultados cualitativos aceptables en algunos tipos de suelo y en sistemas de tuberías de baja complejidad. Sin embargo, estos métodos no determinan los parámetros necesarios para una evaluación cuantitativa de la calidad del revestimiento. El Instituto Mexicano del Petróleo desarrolló la Tecnología de Inspección Electromagnética Superficial (SEMPI) para la evaluación cuantitativa de la integridad del revestimiento de los ductos enterrados; su base teórica permitió el desarrollo de su instrumentación, metodología de campo y técnicas de procesamiento e interpretación de datos. La SEMPI se aplica en dos etapas: regional y local. La etapa regional incluye mediciones de campo magnético, voltaje y resistividad (&#961;s) del suelo, donde el principal resultado es la resistencia eléctrica del revestimiento (Tc) a lo largo del ducto, como indicador de la calidad del revestimiento. Una escala semaforizada de los datos de Tc permite clasificar la calidad del revestimiento como buena (verde), regular (amarilla) y pobre (roja). La etapa local incluye mediciones detalladas del campo eléctrico en tramos anómalos (Tc &lt; 50 Ohm.m) localizando los daños en el revestimiento con una precisión de ± 0.5 m. Durante la etapa local se calcula el área desnuda equivalente por metro de ducto inspeccionado. En este trabajo se presentan los resultados de la aplicación de las etapas regional y local de la tecnología SEMPI en dos ductos situados en el sureste de México.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[surface electromagnetic pipeline inspection]]></kwd>
<kwd lng="en"><![CDATA[pipe coating]]></kwd>
<kwd lng="en"><![CDATA[coating electrical resistance]]></kwd>
<kwd lng="es"><![CDATA[inspección electromagnética superficial de línea de ducto]]></kwd>
<kwd lng="es"><![CDATA[revestimiento del ducto]]></kwd>
<kwd lng="es"><![CDATA[resistencia eléctrica del revestimiento]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anes&#8208;Arteche]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Bharadwaj]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Challenges in the application of DCVG&#8208;survey to predict coating defect size on pipelines]]></article-title>
<source><![CDATA[Electrochemical Sciences Advances]]></source>
<year>2017</year>
<volume>68</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>329-37</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beavers]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Thompson]]></surname>
<given-names><![CDATA[N. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corrosion beneath disbonded pipeline]]></article-title>
<source><![CDATA[Materials Performance]]></source>
<year>1997</year>
<volume>36</volume>
<page-range>13-9</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chipman]]></surname>
<given-names><![CDATA[R. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Theory and problems of transmission lines]]></source>
<year>1968</year>
<publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[McGraw Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="">
<collab>DCVG</collab>
<source><![CDATA[Principle of the DCVG Technique. DC Voltage Gradient Technology and Supply LTD]]></source>
<year>2008</year>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Delgado-Rodríguez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Shevnin]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Ochoa-Valdés]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ryjov]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geoelectrical characterization of a site with hydrocarbon contamination caused by pipeline leakage]]></article-title>
<source><![CDATA[Geofísica Internacional]]></source>
<year>2006</year>
<volume>45</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>63-72</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Furquim]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Locating, mapping and assessing pipeline coating using the pipeline current mapper (PCM) method (in Postuguese)]]></article-title>
<source><![CDATA[Rio Pipeline Conference &amp; Exposition]]></source>
<year>2005</year>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="">
<collab>Geonics Limited</collab>
<source><![CDATA[EM31-MK2 (with Archer), Operating manual, Ontario, Canada]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kaufman]]></surname>
<given-names><![CDATA[A.A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Conductivity determination in formation having a cased well]]></source>
<year>1989</year>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leeds]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Grapiglia]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The DC Voltage-Gradient Method for Accurate Delineation of Coating Defects on Buried Pipelines]]></article-title>
<source><![CDATA[Corrosion Prevention and Control]]></source>
<year>1995</year>
<volume>42</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>77-86</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mckinney]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Evaluation of above-ground potential measurements for assessing pipeline integrity]]></source>
<year>2006</year>
<page-range>71</page-range><publisher-name><![CDATA[University of Florida]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McNeill]]></surname>
<given-names><![CDATA[J.D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Electromagnetic terrain conductivity measurement at low induction numbers]]></source>
<year>1980</year>
<numero>TN-6</numero>
<issue>TN-6</issue>
<page-range>15</page-range><publisher-name><![CDATA[Geonics Limited]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Masilela]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Using the DCVG technology as a quality control tool during construction of new pipelines]]></article-title>
<source><![CDATA[Engineering Failure Analysis]]></source>
<year>1998</year>
<volume>5</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>99-104</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morgan]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Cathodic Protection]]></source>
<year>1993</year>
<edition>2nd</edition>
<page-range>519</page-range><publisher-loc><![CDATA[Houston, TX, USA ]]></publisher-loc>
<publisher-name><![CDATA[National Association of Corrosion Engineers (NACE)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mousatov]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Nakamura]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Transmission-line approximation of pipelines with cathodic protection. SAGEEP-2001]]></source>
<year>2001</year>
<page-range>11</page-range><publisher-loc><![CDATA[Denver, USA, Expanded Abstracts ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mousatov]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Delgado-Rodríguez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Nakamura-Labastida]]></surname>
<given-names><![CDATA[E. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Shevnin]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Technical inspection of pipeline groups using surface electromagnetic methods]]></article-title>
<source><![CDATA[Near Surface Geophysics]]></source>
<year>2012</year>
<volume>10</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>129-40</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nicholson]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Combined CIPS and DCVG survey for more accurate ECDA data]]></article-title>
<source><![CDATA[World Pipelines]]></source>
<year>2007</year>
<volume>7</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Putra]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Yusuf]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Huzni]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ali]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Fonna]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Effect soil resistivity in mapping potential corrosion in underground pipelines area]]></source>
<year>1977</year>
<conf-name><![CDATA[ AIP Conference Proceedings]]></conf-name>
<conf-loc> </conf-loc>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="">
<collab>Radiodetection</collab>
<source><![CDATA[Pipeline Current Mapping system. Operating manual]]></source>
<year>2009</year>
<numero>4</numero>
<issue>4</issue>
<publisher-loc><![CDATA[Bristol, United Kingdom ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Roberge]]></surname>
<given-names><![CDATA[P.R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Handbook of Corrosion Engineering]]></source>
<year>2012</year>
<edition>2nd</edition>
<page-range>1088</page-range><publisher-loc><![CDATA[New York, N.Y ]]></publisher-loc>
<publisher-name><![CDATA[McGraw-Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Roberge]]></surname>
<given-names><![CDATA[P.R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Corrosion Basics: An Introduction. National Association of Corrosion Engineers (NACE)]]></source>
<year>2018</year>
<edition>3nd</edition>
<page-range>822</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schwerdtfeger]]></surname>
<given-names><![CDATA[W. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil Resistivity as Related to Underground Corrosion and Cathodic Protection]]></article-title>
<source><![CDATA[Journal of Research of the National Bureau of Standards]]></source>
<year>1965</year>
<volume>69C</volume>
<numero>I</numero>
<issue>I</issue>
<page-range>71-7</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="">
<collab>Trimble Navigation Limited</collab>
<source><![CDATA[Geoexplorer 6000 series]]></source>
<year>2014</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
