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  <front>
    <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">ZBPWKU</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-15936</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15936</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">Selection of the required number of circulating subs in a special assembly  and investigation of their performance during drilling of radial branching  channels by sectional positive displacement motors</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Выбор необходимого количества промывочных переводников  в специальной компоновке и исследование их работы при бурении  радиально-разветвленных каналов секционными винтовыми двигателями</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Lyagov</surname>
            <given-names>Ilya А.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Лягов</surname>
              <given-names>И. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Lyagov</surname>
              <given-names>Ilya А.</given-names>
            </name>
          </name-alternatives>
          <email>ilyagov@perfobur.com</email>
          <contrib-id contrib-id-type="orcid">0000-0002-3780-2133</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">ООО «Перфобур» (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">LLO “Perfobore” (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Lyagov</surname>
            <given-names>Aleksander V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Лягов</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Lyagov</surname>
              <given-names>Aleksander V.</given-names>
            </name>
          </name-alternatives>
          <email>lyagovs@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-7949-7368</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Уфимский государственный нефтяной технический университет (Уфа, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Ufa State Petroleum Technological University (Ufa, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Isangulov</surname>
            <given-names>Dinislam R.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Исангулов</surname>
              <given-names>Д. Р.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Isangulov</surname>
              <given-names>Dinislam R.</given-names>
            </name>
          </name-alternatives>
          <email>Info@Perfobur.com</email>
          <contrib-id contrib-id-type="orcid">0000-0003-1188-7594</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">ООО «Перфобур» (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">LLO “Perfobore” (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Lyagova</surname>
            <given-names>Аnastasiya А.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Лягова</surname>
              <given-names>А. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Lyagova</surname>
              <given-names>Аnastasiya А.</given-names>
            </name>
          </name-alternatives>
          <email>lyagova_aa@pers.spmi.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-0270-2546</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint Petersburg Mining University (Saint-Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2023-04-28">
        <day>28</day>
        <month>04</month>
        <year>2023</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2024</year>
      </pub-date>
      <volume>265</volume>
      <fpage>78</fpage>
      <lpage>86</lpage>
      <history>
        <date date-type="received" iso-8601-date="2022-08-10">
          <day>10</day>
          <month>08</month>
          <year>2022</year>
        </date>
        <date date-type="accepted" iso-8601-date="2023-02-28">
          <day>28</day>
          <month>02</month>
          <year>2023</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2024-02-29">
          <day>29</day>
          <month>02</month>
          <year>2024</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© Ilya А. Lyagov, Aleksander V. Lyagov, Dinislam R. Isangulov, Аnastasiya А. Lyagova</copyright-statement>
        <copyright-year>2023</copyright-year>
        <copyright-holder xml:lang="ru">И. А. Лягов, А. В. Лягов, Д. Р. Исангулов, А. А. Лягова</copyright-holder>
        <copyright-holder xml:lang="en">Ilya А. Lyagov, Aleksander V. Lyagov, Dinislam R. Isangulov, Аnastasiya А. Lyagova</copyright-holder>
        <license xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15936">https://pmi.spmi.ru/pmi/article/view/15936</self-uri>
      <abstract xml:lang="ru">
        <p>Задача выноса шлама на поверхность при строительстве наклонно направленных и горизонтальных скважин, сильно искривленных радиальных каналов является актуальной. Для стабильной работы технической системы «Перфобур» предлагается использовать промывочный переводник, обеспечивающий эффективную очистку ствола канала от выбуренной породы. Рассмотрены две схемы компоновки технической системы «Перфобур», состоящие из двух семиметровых гибких труб, винтового забойного двигателя, долота и одного промывочного переводника в первой схеме и двух во второй. Для каждой схемы выполнено CFD-моделирование с целью определения давлений и скоростей. Установлено, что более эффективным является использование в компоновке двух промывочных переводников. Для подтверждения численного эксперимента проведены стендовые испытания. Было определено, что разработанный промывочный переводник может эжектировать до 25 % прокачиваемой промывочной жидкости. Стендовые испытания полноразмерной технической системы «Перфобур» для бурения 14-метровых каналов с двумя промывочными переводниками показали, что осевая нагрузка на винтовой забойный двигатель, создаваемая гидронагружателем, составила 3000 Н, а перепад давления в зависимости от подачи – 1,5-2,0 МПа. Это позволяет двигателю работать в режиме максимальной мощности.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The task of sludge removal to the surface during construction of directional and horizontal wells and strongly curved radial channels is relevant. For stable operation of technical system “Perfobore”, it is proposed to use a circulating sub that ensures efficient cleaning of channel wellbore from the drilled rock. Two schemes of technical system “Perfobore” are considered, consisting of two seven-meter coiled tubing, a positive displacement motor, a bit and one circulating sub in the first scheme and two subs in the second scheme. For each of the schemes CFD modeling was implemented to determine values of pressure and speed. It was found out that the use of two circulating subs in the assembly is more efficient. In order to confirm the numerical experiment, bench tests were carried out. It was determined that the designed circulating sub can eject up to 25 % of pumped drilling fluid. The bench tests of full-size technical system “Perfobore” for drilling 14-meter channels with two circulating subs showed that the axial load on positive displacement motor produced by hydraulic loader was 3000 N and pressure drop depending on flow rate was 1.5-2.0 MPa. This allows the motor to operate at maximum power.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>техническая система «Перфобур»</kwd>
        <kwd>глубокий радиальный перфорационный канал</kwd>
        <kwd>промывочный переводник</kwd>
        <kwd>вынос шлама</kwd>
        <kwd>очистка ствола канала</kwd>
        <kwd>гидродинамическое моделирование</kwd>
        <kwd>секционный винтовой двигатель</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>the “Perfobore” technical system</kwd>
        <kwd>deep radial perforation channel</kwd>
        <kwd>circulating sub</kwd>
        <kwd>sludge removal</kwd>
        <kwd>wellbore cleaning</kwd>
        <kwd>computational fluid dynamics modeling</kwd>
        <kwd>sectional positive displacement motor</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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