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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vmait</journal-id><journal-title-group><journal-title xml:lang="ru">Computational Mathematics and Information Technologies</journal-title><trans-title-group xml:lang="en"><trans-title>Computational Mathematics and Information Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2587-8999</issn><publisher><publisher-name>Донской государственный технический университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/2587-8999-2023-7-3-28-38</article-id><article-id custom-type="elpub" pub-id-type="custom">vmait-116</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Computational Mathematics (Вычислительная математика)</subject></subj-group></article-categories><title-group><article-title>Сеточно-характеристический метод с использованием наложенных сеток в задаче сейсморазведки трещиноватых геологических сред</article-title><trans-title-group xml:lang="en"><trans-title>Grid-characteristic method using superimposed grids in the problem of seismic exploration of fractured geological media</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-7384-9281</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Митьковец</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mitkovets</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> аспирант</p><p>г. Москва, ул. Керченская, 1А, корп. 1</p></bio><bio xml:lang="en"><p>PhD student</p><p>1A, build 1, Kerchenskaya St., Moscow</p></bio><email xlink:type="simple">mitkovets@phystech.edu</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2460-0137</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хохлов</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Khokhlov</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доцент, заведующий кафедрой информатики и вычислительной математики, кандидат физико-математических наук</p><p>г. Москва, ул. Керченская, 1А, корп. 1</p></bio><bio xml:lang="en"><p>Associate Professor, Head of the Department of Computer Science and Computational Mathematics, Candidate of physical and mathematical Sciences</p><p>1A, build 1, Kerchenskaya St., Moscow</p></bio><email xlink:type="simple">k_h@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский физико-технический институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Institute of Physics and Technology (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>06</day><month>10</month><year>2023</year></pub-date><volume>7</volume><issue>3</issue><fpage>28</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Митьковец И.А., Хохлов Н.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Митьковец И.А., Хохлов Н.И.</copyright-holder><copyright-holder xml:lang="en">Mitkovets I.A., Khokhlov N.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.cmit-journal.ru/jour/article/view/116">https://www.cmit-journal.ru/jour/article/view/116</self-uri><abstract><sec><title>Введение</title><p>Введение. Сейсморазведка в условия гетерогенности среды является актуальной темой для нефтегазовой промышленности. Следовательно, остается актуальным развитие численных методов решения прямой задачи сейсморазведки как необходимого звена при разработке и усовершенствовании методов решения обратной задачи. Модель тонкой трещины Шонберга хорошо себя показала при численном решении задач, требующих явного учета геологических неоднородностей.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В данной работе авторы рассматривают модификацию сеточно-характеристического метода применением наложенных сеток. Представленный подход позволяет проводить вычислительные эксперименты, явно учитывая трещиноватые неоднородности с произвольной пространственной ориентацией. Для этого помимо основной регулярной вычислительной сетки водится понятие наложенных сеток. Неоднородности, такие как трещины, описываются в рамках наложенной сетки и, в свою очередь, не имеют ограничений, связанных с основной сеткой. Таким образом, производя операцию интерполирования между наложенными основными сетками, мы можем обойти требование соосности трещин и ребер основной сетки.</p></sec><sec><title>Результаты исследования</title><p>Результаты исследования. Предлагаемый подход позволил произвести исследование зависимости анизотропии сейсмического отклика трещиноватого кластера от дисперсии углов наклона трещин.</p></sec><sec><title>Обсуждение и заключения</title><p>Обсуждение и заключения. Предложена модификация сеточно-характеристического метода с применением наложенных сеток для явного учета трещиноватых неоднородностей в гетерогенной геологической среде.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction.</p><p>Seismic exploration in conditions of heterogeneity of the environment is an urgent topic for the oil and gas industry. Consequently, the development of numerical methods for solving the direct problem of seismic exploration remains relevant as a necessary link in the development and improvement of methods for solving the inverse problem. The Schonberg thin crack model has performed well in the numerical solution of problems requiring explicit consideration of geological inhomogeneities.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. In this paper, we consider a modification of the grid-characteristic method using superimposed grids. The presented approach makes it possible to conduct computational experiments, explicitly taking into account fractured inhomogeneities with arbitrary spatial orientation. For this, in addition to the basic regular computational grid, there is the concept of superimposed grids. Inhomogeneities, such as cracks, are described within the framework of the superimposed grid and, in turn, have no restrictions associated with the main grid. Thus, by performing an interpolation operation between the superimposed main grids, we can bypass the requirement of alignment of cracks and edges of the main grid.</p></sec><sec><title>Results</title><p>Results. The proposed approach made it possible to study the dependence of the anisotropy of the seismic response of a fractured cluster on the dispersion of the angles of inclination of the cracks.</p><p>Discussion and Conclusions. A modification of the grid-characteristic method using superimposed grids is proposed to explicitly account for fractured inhomogeneities in a heterogeneous geological environment.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>сеточно-характеристический метод</kwd><kwd>наложенные сетки</kwd><kwd>химерные сетки</kwd><kwd>сейсмика</kwd><kwd>сейсморазведка</kwd><kwd>гетерогенная геологическая среда</kwd></kwd-group><kwd-group xml:lang="en"><kwd>grid-characteristic method</kwd><kwd>superimposed grids</kwd><kwd>chimeric grids</kwd><kwd>seismics</kwd><kwd>seismic exploration</kwd><kwd>heterogeneous geological environment</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 21-11-00139. https:// rscf.ru/project/21-11-00139/</funding-statement><funding-statement xml:lang="en">The research was carried out at the expense of the grant of the Russian Science Foundation no. 21-11-00139. https://rscf.ru/project/21-11-00139/</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Schoenberg M. 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Mathematical Models and Computer Simulations. 2019;11:518–30. https://doi.org/10.1134/S2070048219040069</mixed-citation><mixed-citation xml:lang="en">Favorskaya AV, Petrov IB. The Use of Full-Wave Numerical Simulation for the Investigation of Fractured Zones. Mathematical Models and Computer Simulations. 2019;11:518–30. https://doi.org/10.1134/S2070048219040069</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
