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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="edn" pub-id-type="custom">VWTPCM</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16749</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16749</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геотехнология и инженерная геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geotechnical Engineering and Engineering Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Experimental ice drilling with organosilicon fluid using the KEMS-135 drill in borehole 5G (Vostok Station, Antarctica)</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Экспериментальное бурение льда с кремнийорганической жидкостью снарядом КЭМС-135 в скважине 5Г (станция Восток, Антарктида)</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Bolshunov</surname>
            <given-names>Aleksei V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Большунов</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Bolshunov</surname>
              <given-names>Aleksei V.</given-names>
            </name>
          </name-alternatives>
          <email>Bolshunov_AV@pers.spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-3879-7380</contrib-id>
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        </contrib>
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          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины II (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Empress Catherine II Saint Petersburg Mining University (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Ignatev</surname>
            <given-names>Sergei A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Игнатьев</surname>
              <given-names>С. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Ignatev</surname>
              <given-names>Sergei A.</given-names>
            </name>
          </name-alternatives>
          <email>Ignatev_SA@pers.spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-5527-0978</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины II (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Empress Catherine II Saint Petersburg Mining University (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Serbin</surname>
            <given-names>Danil V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Сербин</surname>
              <given-names>Д. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Serbin</surname>
              <given-names>Danil V.</given-names>
            </name>
          </name-alternatives>
          <email>Serbin_DV@pers.spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-9855-7178</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины II (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Empress Catherine II Saint Petersburg Mining University (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Turkeev</surname>
            <given-names>Aleksei V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Туркеев</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Turkeev</surname>
              <given-names>Aleksei V.</given-names>
            </name>
          </name-alternatives>
          <email>turkeev@aari.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-9453-4059</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <aff>
            <institution xml:lang="ru">Арктический и антарктический научно-исследовательский институт (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Arctic and Antarctic Research Institute (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2025-07-07">
        <day>07</day>
        <month>07</month>
        <year>2025</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2025</year>
      </pub-date>
      <volume>273</volume>
      <fpage>147</fpage>
      <lpage>158</lpage>
      <history>
        <date date-type="received" iso-8601-date="2025-04-26">
          <day>26</day>
          <month>04</month>
          <year>2025</year>
        </date>
        <date date-type="accepted" iso-8601-date="2025-06-05">
          <day>05</day>
          <month>06</month>
          <year>2025</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2025-07-07">
          <day>07</day>
          <month>07</month>
          <year>2025</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2025 А. В. Большунов, С. А. Игнатьев, Д. В. Сербин, А. В. Туркеев</copyright-statement>
        <copyright-statement xml:lang="en">© 2025 Aleksei V. Bolshunov, Sergei A. Ignatev, Danil V. Serbin, Aleksei V. Turkeev</copyright-statement>
        <copyright-year>2025</copyright-year>
        <copyright-holder xml:lang="ru">А. В. Большунов, С. А. Игнатьев, Д. В. Сербин, А. В. Туркеев</copyright-holder>
        <copyright-holder xml:lang="en">Aleksei V. Bolshunov, Sergei A. Ignatev, Danil V. Serbin, Aleksei V. Turkeev</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/16749">https://pmi.spmi.ru/pmi/article/view/16749</self-uri>
      <abstract xml:lang="ru">
        <p>Представлены результаты экспериментального бурения конжеляционного льда в стволе скважине 5Г-5 на станции Восток (Антарктида) с применением колонкового снаряда КЭМС-135 в среде кремнийорганической жидкости ПМС-3. Исследования проводились во время 70-й Российской антарктической экспедиции и были направлены на оценку эффективности технологии при глубоком бурении ледников и вскрытии подледниковых водоемов, а также определение рациональных режимных параметров бурения. Подготовка скважины включала извлечение заливочной жидкости, комплекс геофизических исследований и калибровку ствола. Доставка ПМС-3 на забой осуществлялась с использованием специализированного устройства «Слоник». Экспериментальное бурение конжеляционного льда проходило с применением колонкового снаряда КЭМС-135. Выполнено два буровых рейса с отбором керна длиной 1,10 и 1,14 м, глубина бурения – 3595,15-3597,39 м. Контроль наличия на забое ПМС-3 осуществлялся посредством геофизических исследований и пробоотбора. Особое внимание уделялось анализу режимов бурения, включая механические скорости, характеристики шлама и влияние ПМС-3 на элементы бурового оборудования. Результаты экспериментального бурения показали увеличение механической скорости бурения в среде кремнийорганической жидкости ПМС-3 на 15-20 % по сравнению с используемой заливочной жидкостью (керосин + дихлорфторэтан), а также отсутствие зашламования коронки и улучшение смазывающих свойств жидкости. Определены перспективные направления дальнейших исследований, связанных с оптимизацией конструкции бурового снаряда для работы в среде ПМС-3 и изучением долгосрочного воздействия на подледниковые экосистемы.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The article presents the results of experimental drilling of congelation ice in the branch hole 5G-5 at the Vostok Station (Antarctica) using the KEMS-135 coring drill in the PMS-3 organosilicon fluid. The studies were conducted during the 70th Russian Antarctic Expedition and were aimed at assessing the technology efficiency in deep glacier drilling and opening of subglacial reservoirs, as well as at determining rational drilling parameters. Borehole preparation included extraction of drilling fluid, a body of geophysical studies, and wellbore reaming. The PMS-3 was delivered to the bottomhole using a specialized device called “Slonik”. Experimental drilling of congelation ice was conducted by the KEMS-135 coring drill. Two drilling runs were performed with core sampling of 1.10 and 1.14 m long, drilling depth 3595.15-3597.39 m. The presence of PMS-3 at the bottomhole was monitored by geophysical studies and sampling. Particular attention was given to analysing drilling modes, including mechanical speed, cuttings properties, and the effect of PMS-3 on the drilling equipment elements. The results of experimental drilling showed an increase in the mechanical drilling speed in the PMS-3 organosilicon fluid environment by 15-20 % compared to the used drilling fluid (kerosene + dichlorofluoroethane), as well as the absence of crown plugging and improved lubricating properties of the fluid. The article describes the promising areas of further research related to the drill design optimization for operation in the PMS-3 environment and the study of the long-term impact on subglacial ecosystems.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>Антарктида</kwd>
        <kwd>подледниковое озеро Восток</kwd>
        <kwd>экологически безопасное бурение</kwd>
        <kwd>колонковый снаряд КЭМС-135</kwd>
        <kwd>кремнийорганическая жидкость</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Antarctica</kwd>
        <kwd>subglacial Lake Vostok</kwd>
        <kwd>environmentally friendly drilling</kwd>
        <kwd>KEMS-135 coring drill</kwd>
        <kwd>organosilicon fluid</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Исследование выполнено с помощью субсидии на выполнение Государственного задания в сфере научной  деятельности на 2024 г. № FSRW-2024-0003.</funding-statement>
        <funding-statement xml:lang="en">The research was performed at the expense of the subsidy for the State assignment in the field of scientific activity for 2024 N FSRW-2024-0003.</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
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