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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Russian Journal of Earth Sciences</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Russian Journal of Earth Sciences</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Russian Journal of Earth Sciences</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">1681-1208</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">83694</article-id>
   <article-id pub-id-type="doi">10.2205/2024es000928</article-id>
   <article-id pub-id-type="edn">ortblj</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>ORIGINAL ARTICLES</subject>
    </subj-group>
    <subj-group>
     <subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Application of Digital Core Analysis Technology to Study Filtration-Capacity Properties and Structure of Highly Permeable Rocks of Underground Gas Storage Facilities</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Применение технологии цифрового анализа керна для изучения фильтрационно-емкостных свойств и структуры высокопроницаемых пород подземных хранилищ газа</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2116-6483</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Химуля</surname>
       <given-names>Валерий Владимирович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Khimulia</surname>
       <given-names>Valerii Vladimirovich</given-names>
      </name>
     </name-alternatives>
     <email>valery.khim@gmail.com</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт проблем механики им. А.Ю. Ишлинского РАН</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2024-12-30T00:00:00+03:00">
    <day>30</day>
    <month>12</month>
    <year>2024</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2024-12-30T00:00:00+03:00">
    <day>30</day>
    <month>12</month>
    <year>2024</year>
   </pub-date>
   <volume>24</volume>
   <issue>5</issue>
   <fpage>1</fpage>
   <lpage>15</lpage>
   <history>
    <date date-type="received" iso-8601-date="2024-06-03T00:00:00+03:00">
     <day>03</day>
     <month>06</month>
     <year>2024</year>
    </date>
    <date date-type="accepted" iso-8601-date="2024-07-31T00:00:00+03:00">
     <day>31</day>
     <month>07</month>
     <year>2024</year>
    </date>
   </history>
   <self-uri xlink:href="https://rjes.ru/en/nauka/article/83694/view">https://rjes.ru/en/nauka/article/83694/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе представлены результаты исследований порового пространства высокопористых пород-коллекторов подземного хранилища газа (ПХГ) с помощью методов цифрового анализа снимков компьютерной микротомографии. Применена разработанная методика комплексного неразрушающего анализа структурных и фильтрационно-емкостных свойств, а также численного моделирования гидродинамических процессов средствами ПО GeoDict. Выполнена оценка структурных неоднородностей и трещиноватости пород. Созданы 3D-модели внутреннего пространства образцов на базе разномасштабных снимков. Рассчитаны значения открытой и закрытой пористостей, геодезической извилистости, проведен анализ характеристик путей перколяции в исследуемых породах для различных направлений интрузии. Сделаны выводы об однородности распределения путей перколяции по объему породы. Исследовано пространственное распределение пористости в породах, проведен порометрический анализ породы. Проведено численное моделирование процессов фильтрации на полученных структурах в рамках приближения Стокса для трех выделенных направлений в породе. Показано отсутствие выраженной зависимости изменения фильтрационных свойств в выделенных направлениях от количественных характеристик порового пространства. Сделан вывод о степени анизотропии фильтрационно-емкостных свойств пород. Показано хорошее соответствие измеренных в ходе цифрового анализа характеристик с натурными данными и экспериментально полученными лабораторными значениями. Описанная методика позволяет упростить получение данных о характеристиках крупнозернистых пород-коллекторов, и призвана расширить подходы к неразрушающему анализу кернового материала. Совместное применение предложенной методики цифрового анализа низкопрочных коллекторов и лабораторных геомеханических испытаний керна является одним из этапов в развитии комплексного подхода к определению параметров безопасной эксплуатации газовых скважин и снижению рисков пескопроявлений на месторождениях со слабоцементированными коллекторами.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper presents the results of pore space studies of highly porous reservoir rocks of underground gas storage (UGS) facilities using the digital analysis of computed microtomography images. The methodology of complex nondestructive analysis of structural and filtration-capacitance properties has been developed. Structural heterogeneities and rock fracturing were evaluated. 3D-models of specimen inner space were created on the basis of multi-scale images. The values of open and closed porosity, geodesic tortuosity were calculated, the characteristics of percolation paths in the studied rocks were analyzed for different directions of intrusion. Conclusions were made about the homogeneity of percolation path distribution over the rock volume. The spatial distribution of porosity in the rocks was studied, and porometry analysis of the rocks was carried out. Numerical modeling of filtration processes on the obtained structures in the framework of Stokes approximation for three selected directions in the rock by means of GeoDict software was carried out. It is shown that there is no pronounced dependence of changes in filtration properties in the selected directions on the quantitative characteristics of the pore space. The conclusion is made about the degree of anisotropy of filtration-capacitance properties of rocks. The good correspondence of the characteristics measured in the course of digital analysis with in-situ data and experimentally obtained laboratory values is shown. The described technique allows to simplify data acquisition on the characteristics of fine-grained reservoir rocks, and is designed to extend the approaches to nondestructive analysis of core material. Combined application of the proposed methodology of digital analysis of low-strength reservoirs and laboratory geomechanical core testing is one of the stages in the development of a comprehensive approach to determining the parameters of safe operation of gas wells and reducing the risks of sanding in fields with weakly cemented reservoirs.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>пористость коллекторов</kwd>
    <kwd>фильтрационно-емкостные свойства</kwd>
    <kwd>компьютерная томография горных пород</kwd>
    <kwd>цифровой анализ керна</kwd>
    <kwd>численное моделирование потока фильтрации</kwd>
    <kwd>анизотропия проницаемости</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>reservoir porosity</kwd>
    <kwd>filtration-capacitance properties</kwd>
    <kwd>CT scanning of rocks</kwd>
    <kwd>digital core analysis</kwd>
    <kwd>numerical modeling of filtration flow</kwd>
    <kwd>permeability anisotropy.</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 23-77-01037, https://rscf.ru/project/23-77-01037/. Автор выражает признательность заместителю директора по научной работе Института проблем механики им. А. Ю. Ишлинского РАН (ИПМех РАН) В. И. Кареву и заведующему лабораторией геомеханики ИПМех РАН Ю. Ф. Коваленко за предоставленную возможность использования экспериментального оборудования и вычислительных ресурсов, а также ценные замечания и содействие.</funding-statement>
    <funding-statement xml:lang="en">The study was supported by the Russian Science Foundation grant No. 23-77-01037, https://rscf.ru/project/23-77-01037/. The author expresses gratitude to the Deputy Director for Research of the A. Yu. Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences (IPMech RAS) V. I. Karev and the Head of the Geomechanics Laboratory of IPM RAS Yu. F. Kovalenko for the opportunity to use experimental equipment and computing resources, as well as valuable comments and assistance.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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