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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="pmi" pub-id-type="custom">pmi-12191</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/12191</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Без раздела</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Without section</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Advantages of air as a circulating agent for drilling wells</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Преимущества воздуха как циркуляционного агента при бурении скважин</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Mikhailova</surname>
            <given-names>N. D.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Михайлова</surname>
              <given-names>Н. Д.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Mikhailova</surname>
              <given-names>N. D.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1969-08-20">
        <day>20</day>
        <month>08</month>
        <year>1969</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1969</year>
      </pub-date>
      <volume>57</volume>
      <issue>2</issue>
      <fpage>54</fpage>
      <lpage>58</lpage>
      <history>
        <date date-type="received" iso-8601-date="1968-08-04">
          <day>04</day>
          <month>08</month>
          <year>1968</year>
        </date>
        <date date-type="accepted" iso-8601-date="1968-10-19">
          <day>19</day>
          <month>10</month>
          <year>1968</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1969-08-20">
          <day>20</day>
          <month>08</month>
          <year>1969</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1969 Н. Д. Михайлова</copyright-statement>
        <copyright-statement xml:lang="en">© 1969 N. D. Mikhailova</copyright-statement>
        <copyright-year>1969</copyright-year>
        <copyright-holder xml:lang="ru">Н. Д. Михайлова</copyright-holder>
        <copyright-holder xml:lang="en">N. D. Mikhailova</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/12191">https://pmi.spmi.ru/pmi/article/view/12191</self-uri>
      <abstract xml:lang="ru">
        <p>Постоянное совершенствование технологии бурения разведочных скважин, вызванное увеличением их глубин, а также все возрастаю­щей сложностью и разнообразием геолого-технических условий, при­вело к созданию большого количества различных промывочных аген­тов. Применяемые в настоящее время промывочные агенты—от воз­духа и природного газа до утяжеленных глинистых растворов —обла­дают весьма различными физическими свойствами, оказывающими значительное влияние на буровой процесс и основные показатели бурения.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Constant improvement of exploratory well drilling technology, caused by increasing depths of exploratory wells, as well as the ever-increasing complexity and diversity of geological and technical conditions, has led to the creation of a large number of different flushing agents. Currently used flushing agents - from air and natural gas to weighted clay solutions - have very different physical properties that have a significant impact on the drilling process and the main indicators of drilling.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
