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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">GOYQFR</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16571</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16571</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">Features and informative possibilities of the early radial regime of buildups  in horizontal wells with closely spaced multi-stage fractures</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Особенности и информативные возможности  раннерадиального режима на КВД в горизонтальных скважинах  с близко расположенными трещинами МГРП</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Abramov</surname>
            <given-names>Timur A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Абрамов</surname>
              <given-names>Т. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Abramov</surname>
              <given-names>Timur A.</given-names>
            </name>
          </name-alternatives>
          <email>abramov-ta@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0009-0003-5766-9565</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Институт проблем нефти и газа РАН (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Oil and Gas Research Institute RAS (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Indrupskii</surname>
            <given-names>Ilya M.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Индрупский</surname>
              <given-names>И. М.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Indrupskii</surname>
              <given-names>Ilya M.</given-names>
            </name>
          </name-alternatives>
          <email>i-ind@ipng.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-0038-6279</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Институт проблем нефти и газа РАН (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Oil and Gas Research Institute RAS (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2025-10-13">
        <day>13</day>
        <month>10</month>
        <year>2025</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2025</year>
      </pub-date>
      <volume>276</volume>
      <issue>2</issue>
      <fpage>29</fpage>
      <lpage>48</lpage>
      <history>
        <date date-type="received" iso-8601-date="2024-08-12">
          <day>12</day>
          <month>08</month>
          <year>2024</year>
        </date>
        <date date-type="accepted" iso-8601-date="2025-07-02">
          <day>02</day>
          <month>07</month>
          <year>2025</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2025-12-30">
          <day>30</day>
          <month>12</month>
          <year>2025</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2025 Т. А. Абрамов, И. М. Индрупский</copyright-statement>
        <copyright-statement xml:lang="en">© 2025 Timur A. Abramov, Ilya M. Indrupskii</copyright-statement>
        <copyright-year>2025</copyright-year>
        <copyright-holder xml:lang="ru">Т. А. Абрамов, И. М. Индрупский</copyright-holder>
        <copyright-holder xml:lang="en">Timur A. Abramov, Ilya M. Indrupskii</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/16571">https://pmi.spmi.ru/pmi/article/view/16571</self-uri>
      <abstract xml:lang="ru">
        <p>Бурение горизонтальных скважин (ГС) с многостадийным гидроразрывом пласта (МГРП) является одним из наиболее частых решений при разработке низкопроницаемых нефтяных и газовых коллекторов. При этом осложнена оценка параметров системы пласт – скважина по данным гидродинамических исследований (ГДИ) ввиду нереалистичных времен получения отклика на радиальный режим течения. Устранить эту неопределенность возможно, используя данные раннерадиального режима, возникающего на начальном этапе записи кривой восстановления давления (КВД). Однако для его проявления необходимо, чтобы расстояние между трещинами вдоль горизонтального ствола было достаточно большим по сравнению с полудлинами трещин. На практике это условие обычно не выполняется, что делает невозможным такой способ оценки гидропроводности пласта. В то же время ГС с МГРП характеризуются сложным характером КВД, что связано с особенностью взаимодействия трещин. Поведение КВД на раннем периоде замера зависит от длительности отработки скважины перед остановкой, подобно КВД в скважине вблизи непроницаемой границы пласта. Впервые выявлено, что для достаточно коротких времен отработки на раннем этапе КВД может проявляться радиально подобный режим, вызванный формированием эллиптического течения вокруг трещин. Доказана устойчивость данного режима и взаимосвязь положения графика производной давления с параметрами формируемого эллиптического течения. Получена эмпирическая формула, обеспечивающая оценку коэффициента гидропроводности пласта по данному режиму с достаточной точностью для часто встречающегося на практике диапазона параметров геометрии ГС с МГРП. Результаты работы расширяют возможности достоверной оценки параметров системы пласт – скважина для ГС с МГРП в низкопроницаемых коллекторах по данным ГДИ, включая исследования новых скважин в процессе освоения или при запуске после длительного простоя.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Drilling of horizontal wells with multi-stage hydraulic fracturing (MFHW) is one of the most common solutions in the development of low-permeable oil and gas reservoirs. At the same time, the estimation of the well and reservoir parameters by well test analysis is complicated due to long time response to the radial flow regime. It is possible to eliminate uncertainty dealt with the absence of radial flow response by using data from the early radial regime that occurs at early times of pressure buildup. However, its appearance is only possible if the distance between the parallel fractures is much larger than the fracture half-lengths, which is not usual in practice. At the same time, MFHW demonstrate a complex buildup behavior due to fracture interference. By analytical and numerical simulations it is shown that the early time buildup behavior depends on duration of well production before shut-in. This behavior is similar to the buildup of a vertical well near the sealed boundary. For short production times, a radial-like regime may appear at early buildup times caused by elliptical flow around the fractures. The consistency of this regime and the relation of the pressure derivative plateau level to the parameters of the elliptical flow are justified. An empirical formula of sufficient accuracy has been obtained for reservoir transmissibility (flow capacity). This formula is applicable for the most common range of parameter values of the MFHW. These results open up new opportunities for reliable assessment of the well and reservoir parameters from well tests in MFHW in low-permeability reservoirs, including new wells or wells restarted after a long inactive period.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>гидродинамические исследования</kwd>
        <kwd>кривая восстановления давления</kwd>
        <kwd>горизонтальная скважина</kwd>
        <kwd>многостадийный гидроразрыв пласта</kwd>
        <kwd>гидропроводность</kwd>
        <kwd>проницаемость</kwd>
        <kwd>раннерадиальный режим</kwd>
        <kwd>эллиптический режим</kwd>
        <kwd>низкопроницаемый коллектор</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>well tests</kwd>
        <kwd>pressure buildup</kwd>
        <kwd>horizontal well</kwd>
        <kwd>multi-stage fracturing</kwd>
        <kwd>flow capacity</kwd>
        <kwd>permeability</kwd>
        <kwd>early radial flow</kwd>
        <kwd>elliptical flow</kwd>
        <kwd>low-permeability reservoir</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Работа подготовлена в рамках выполнения Государственного задания ИПНГ РАН по теме «Создание новых технологий эффективного экологически чистого извлечения углеводородов в сложных горно-геологических условиях на основе системного подхода к изучению и моделированию полного жизненного цикла нефтегазовых месторождений» (125020501405-1).</funding-statement>
        <funding-statement xml:lang="en">This paper contributes to the fulfillment of the State assignment of OGRI RAS, project “Development of new technologies for the efficient, environmentally friendly recovery of hydrocarbons in complex mining and geological conditions based on integrated approach to studying and modeling the full life cycle of oil and gas fields” (125020501405-1).</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
  <back>
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