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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">10.31897/pmi.2019.2.172</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-13185</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/13185</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">Determining the stability of the borehole walls at drilling intervals of loosely coupled rocks considering zenith angle</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Определение устойчивости стенок скважины при проходке интервалов слабосвязных горных пород с учетом зенитного угла</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Blinov</surname>
            <given-names>P. A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Блинов</surname>
              <given-names>П. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Blinov</surname>
              <given-names>P. A.</given-names>
            </name>
          </name-alternatives>
          <email>blinovpavel@mail.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <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="2019-04-23">
        <day>23</day>
        <month>04</month>
        <year>2019</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2019</year>
      </pub-date>
      <volume>236</volume>
      <fpage>172</fpage>
      <lpage>179</lpage>
      <history>
        <date date-type="received" iso-8601-date="2018-11-09">
          <day>09</day>
          <month>11</month>
          <year>2018</year>
        </date>
        <date date-type="accepted" iso-8601-date="2019-01-22">
          <day>22</day>
          <month>01</month>
          <year>2019</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2019-04-23">
          <day>23</day>
          <month>04</month>
          <year>2019</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2019 П. А. Блинов</copyright-statement>
        <copyright-statement xml:lang="en">© 2019 P. A. Blinov</copyright-statement>
        <copyright-year>2019</copyright-year>
        <copyright-holder xml:lang="ru">П. А. Блинов</copyright-holder>
        <copyright-holder xml:lang="en">P. A. Blinov</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/13185">https://pmi.spmi.ru/pmi/article/view/13185</self-uri>
      <abstract xml:lang="ru">
        <p>При проектировании и строительстве нефтяных и газовых скважин, разработке и выборе высокоэффективных технологических схем бурения, крепления, освоения и эксплуатации необходим целый комплекс сведений о горно-геологических условиях, свойствах горных пород и явлениях, которые происходят в околоскважинной зоне. Правильный учет геомеханических процессов, происходящих в горном массиве, разработка надежных методов управления проявлениями горного давления на всех стадиях сооружения и работы скважин приобретают все большее значение в связи с увеличением глубин и объемов бурения в районах со сложными горно-геологическими условиями. Бурение скважин сопровождается нарушением естественного состояния горных пород. Неизбежным следствием этого нарушения являются различные геомеханические процессы (проявления горного давления) в породном массиве приствольной зоны. Изменяя в нужном направлении напряженно-деформированное состояние горных пород путем воздействия на компоненты горного давления, т.е. управляя проявлениями горного давления, можно предупредить эти осложнения или существенно уменьшить негативные последствия и затраты на их ликвидацию. В работе рассматривается методика определения устойчивости стенок наклонно направленной скважины с учетом проникновения фильтрата бурового раствора в поры и трещины горных пород. Это позволит на стадии проектирования скорректировать зенитный угол скважины при прохождении неустойчивого интервала, либо подобрать рецептуру бурового раствора для обеспечения безаварийного бурения.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>During development of drilling projects, a whole array of data is needed considering the properties of rocks and the conditions of their bedding. Accounting for geomechanical processes occurring in the near-wellbore zone allows avoiding many complications associated with the violation of the wellbore walls stability at all stages of its construction and operation. Technological and technical factors such as vibration and rotation of the drilling string, formation of launders during the descent and ascent of the assembly, pressure pulsation during the start and stop of pumps, hydrostatic and hydrodynamic pressure of the drilling fluid, its composition and properties, have a great influence on the stress-strain state of the medium opened by the well. The washing fluid circulating in the well should provide backpressure to the reservoir, not interact with the rocks chemically, colmatage channels in porous and fractured rocks, preventing penetration of the mud into the medium, by creating an impermeable barrier at drilling clay seams that are prone to swelling, cracking, etc. The article discusses the method for determining the stability of the directed well walls, taking into account the penetration of drilling mud into the pores and fractures of rocks. The technique will allow adjusting the zenith angle of the well during the workout of an unstable interval at the design stage, or selecting a drilling fluid composition to ensure fail-safe drilling.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>бурение</kwd>
        <kwd>буровой раствор</kwd>
        <kwd>напряженное состояние горных пород</kwd>
        <kwd>устойчивость ствола скважины</kwd>
        <kwd>фильтрат бурового раствора</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>drilling</kwd>
        <kwd>drillingmud</kwd>
        <kwd>strain condition of the rocks</kwd>
        <kwd>stability of the wellbore</kwd>
        <kwd>drilling mud filtrate</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
    <ref-list>
      <ref id="ref1">
        <label>1</label>
        <mixed-citation xml:lang="ru">Blinov P.A., Kulemin M.S., Arslanova E.R. Methods for assessing the fastening properties of drilling fluids for drilling loosely-coupled rocks. Burenie v oslozhnennykh usloviyakh: Materialy Mezhdunarodnoi nauchno-prakticheskoi konferentsii. St. Petersburg: «Lema», 2016, p. 11-13 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref2">
        <label>2</label>
        <mixed-citation xml:lang="ru">Blinov P.A., Arslanova E.R. Development of the technique for determining the stability of the directed wellbore shaft. Burenie skvazhin v oslozhnennykh usloviyakh. II Mezhdunarodnaya nauchno-prakticheskaya konferentsiya. Sankt-Peterburgskii gornyi universitet. St. Petersburg, 2017, p. 9-10 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref3">
        <label>3</label>
        <mixed-citation xml:lang="ru">Blinov P.A., Dvoinikov M.V., Kulemin M.S., Arslanova E.R. The effect of mud filtrate on the stress distribution in the near-wellbore zone of the well. Estestvennye i tekhnicheskie nauki. 2017. N 4 (106), p. 63-66 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref4">
        <label>4</label>
        <mixed-citation xml:lang="ru">Voitenko B.C. Applied Geomechanics in Drilling. Moscow: Nedra, 1990, p. 252 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref5">
        <label>5</label>
        <mixed-citation xml:lang="ru">Voitenko B.C. Management of rock pressure at drilling. Moscow: Nedra, 1985, p. 181 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref6">
        <label>6</label>
        <mixed-citation xml:lang="ru">Dvoinikov M.V. Well trajectory design for efficient drilling with rotary-driven systems. Zapiski Gornogo instituta. 2018. Vol. 231, p. 254-262. DOI: 10.25515/PMI.2018.3.254 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref7">
        <label>7</label>
        <mixed-citation xml:lang="ru">Karev V.I., Kovalenko Yu.F., Kulinich Yu.V. Determination of deformation and durability properties of rocks in relation to Bazhen deposits. Tekhnologii TEK. 2005. N 3(22), p. 17-21 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref8">
        <label>8</label>
        <mixed-citation xml:lang="ru">Kireev A.M. Management features of the rock pressure manifestations during the creation and the intensification of the influx in difficult geological conditions. Byulleten' BGA. 2001. N 1 (5), p. 15-19 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref9">
        <label>9</label>
        <mixed-citation xml:lang="ru">Kireev A.M Development and research of technologies and technical means of rock pressure control during well construction: Avtoref. dis… kand. tekhn. nauk. TyumGNGU. Tyumen', 2002, p. 24 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref10">
        <label>10</label>
        <mixed-citation xml:lang="ru">Klimov D., Karev V., Kovalenko Yu., Ustinov K. Mathematical and physical modeling of rock destruciton during making of directional wells. Tekhnologii toplivno-energeticheskogo kompleksa. 2006. N 5, p. 22-27 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref11">
        <label>11</label>
        <mixed-citation xml:lang="ru">Dvoinikov M.V., Kolev Zh.M., Vodorezov D.D., Oshibkov A.V. Model of multi-well operation with various types of bottomhole design in stationary mode. Neftyanoe khozyaistvo. 2014. N 11, p. 130-133 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref12">
        <label>12</label>
        <mixed-citation xml:lang="ru">Nikolaev N.I., Leusheva E.L. Improving the efficiency of hard rocks drilling. Neftyanoe khozyaistvo. 2016. N 3, p. 68-71 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref13">
        <label>13</label>
        <mixed-citation xml:lang="ru">Kharlamov K.N., Kovalenko Yu.F., Karev V.I., Usachev E.A. On the need to take into account the durability characteristics of rocks in determining the optimal spatial position of the well. Burenie i neft'. 2008. N 10, p. 18-21 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref14">
        <label>14</label>
        <mixed-citation xml:lang="ru">Klimov D.M., Karev V.I., Kovalenko Yu.F., Ustinov K.B. On the stability of inclined and horizontal oil and gas wells. Aktual'nye problemy mekhaniki. Mekhanika deformiruemogo tverdogo tela. Moscow: Nauka, 2009, p. 455-469 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref15">
        <label>15</label>
        <mixed-citation xml:lang="ru">Oshibkov A.V., Vodorezov D.D., Syzrantseva K.V., Frolov S.A., Dvoinikov M.V., Svetashov V.N., Bakirov D.L. Assessment of the stress-strain state of the joint connection construction of a multilateral wellbore. Neftyanoe khozyaistvo. 2015. N 6, p. 83-85 (in Russian).</mixed-citation>
      </ref>
      <ref id="ref16">
        <label>16</label>
        <mixed-citation xml:lang="ru">Blinov P.A., Podoliak A.V. The method of determining the effects of drilling fluid on the stability of loose rocks. International Journal of Applied Engineering Research. 2016. Vol. 11, Iss. 9, p. 6627-6629.</mixed-citation>
      </ref>
      <ref id="ref17">
        <label>17</label>
        <mixed-citation xml:lang="ru">Blinov P.A., Dvoynikov M.V. The process of hardening loose rock by Mud Filtrat. International Journal of Applied Engineering Research. 2016. Vol. 11. Iss. 9, p. 6630-6632.</mixed-citation>
      </ref>
      <ref id="ref18">
        <label>18</label>
        <mixed-citation xml:lang="ru">Moradi S.S.Т., Nikolaev N.I., Chudinova I.V., Martel A.S. Geomechanical study of well stability in high-pressure, high-temperature conditions. Geomechanics and Engineering Vol. 16(3). Iss. 3, p. 331-339.</mixed-citation>
      </ref>
      <ref id="ref19">
        <label>19</label>
        <mixed-citation xml:lang="ru">Blinov P.A., Dvoynikov M.V., Sergeevich K.M., Rustamovna A.E. Influence of mud filtrate on the stress distribution in the row zone of the well. International Journal of Applied Engineering Research. 2017. Vol. 12. Iss. 15, p. 5214-5217.</mixed-citation>
      </ref>
      <ref id="ref20">
        <label>20</label>
        <mixed-citation xml:lang="ru">Moradi S.S.T., Nikolaev N.I., Leusheva E.L. Improvement of cement properties using a single multi-functional polymer. International Journal of Engineering, Transactions A: Basics. 2018. Vol. 31. Iss. 1, p. 181-187.</mixed-citation>
      </ref>
    </ref-list>
  </back>
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