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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 pub-id-type="doi">10.18454/pmi.2016.5.655</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-5886</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/5886</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Нефтегазовое дело</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Oil and gas</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Resistance of rocks to crushing during well drilling</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Сопротивление горных пород разрушению при  бурении скважин</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Dolgii</surname>
            <given-names>I. E.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Долгий</surname>
              <given-names>И. Е.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Dolgii</surname>
              <given-names>I. E.</given-names>
            </name>
          </name-alternatives>
          <email>dol@mail.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint-Petersburg Mining University (Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Nikolaev</surname>
            <given-names>N. I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Николаев</surname>
              <given-names>Н. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Nikolaev</surname>
              <given-names>N. I.</given-names>
            </name>
          </name-alternatives>
          <email>nikinik@mail.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Санкт-Петербургский горный университет (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Saint-Petersburg Mining University (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2016-10-24">
        <day>24</day>
        <month>10</month>
        <year>2016</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2016</year>
      </pub-date>
      <volume>221</volume>
      <fpage>655</fpage>
      <lpage>660</lpage>
      <history>
        <date date-type="received" iso-8601-date="2015-11-30">
          <day>30</day>
          <month>11</month>
          <year>2015</year>
        </date>
        <date date-type="accepted" iso-8601-date="2016-01-08">
          <day>08</day>
          <month>01</month>
          <year>2016</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2016-10-24">
          <day>24</day>
          <month>10</month>
          <year>2016</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© I. E. Dolgii, N. I. Nikolaev</copyright-statement>
        <copyright-year>2016</copyright-year>
        <copyright-holder xml:lang="ru">И. Е. Долгий, Н. И. Николаев</copyright-holder>
        <copyright-holder xml:lang="en">I. E. Dolgii, N. I. Nikolaev</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/5886">https://pmi.spmi.ru/pmi/article/view/5886</self-uri>
      <abstract xml:lang="ru">
        <p>Приведены характеристики горных пород по степени их буримости. Рассмотрены вопросы влияния дифференциального давления на буримость горных пород, изменения прочности горных пород в зависимости от глубины их залегания и условий разрушения. Проанализированы вопросы взаимосвязи технологических процессов по разрушению горных пород на забое скважины и разрушающих напряжений. Дана оценка взаимосвязи между разрушающими напряжениями и деформациями горных пород с учетом их структурного изменения и скорости нагружения при разрушении. Оценена возможность и целесообразность полученных закономерностей между напряжениями, деформациями и дифференциальным давлением при решении практических задач по эффективному разрушению горных пород при бурении. Рассмотрены вопросы теоретического обоснования разрушения горных пород при работе породоразрушающего инструмента в забойных условиях. Показано, что эффект разрушения горной породы при бурении зависит не только от значения разрушающей нагрузки, но и от скорости ее приложения.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The paper presents properties of the rocks according to their resistance to drilling. The effects of differential pressure on the rock drillability and changes in rocks strength depending on the depth of their occurrence and crushing conditions are examined. The interlinkage between technological processes for rock crushing at the borehole bottom and breaking stresses has been analyzed. The interlinkage between the breaking loads and deformations of rocks with account of their structural changes and rate of loading has been assessed. The relevance and applicability of identified regularities between stresses, deformations and differential pressure for solving practical tasks of efficient rock crushing in the course of drilling have been assessed. Issues of providing theoretical evidence for the rock breakage with the rock cutting tools in the bottom-hole conditions have been reviewed. It is proven that the rock destruction effect of drilling depends not only on the value of the breaking load but also on the rate of its application.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>скважина</kwd>
        <kwd>дифференциальное давление</kwd>
        <kwd>разрушающее напряжение</kwd>
        <kwd>буримость</kwd>
        <kwd>буровой раствор</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>borehole</kwd>
        <kwd>differential pressure</kwd>
        <kwd>breaking stress</kwd>
        <kwd>drillability</kwd>
        <kwd>drilling mud</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
