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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">tumnig</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Нефть и газ</journal-title><trans-title-group xml:lang="en"><trans-title>Oil and Gas Studies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0445-0108</issn><issn pub-type="epub">3033-8174</issn><publisher><publisher-name>Industrial University of Tyumen</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31660/0445-0108-2022-6-94-109</article-id><article-id custom-type="elpub" pub-id-type="custom">tumnig-1072</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>ХИМИЯ И ХИМИЧЕСКИЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMISTRY AND CHEMICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Магнитные жидкости на основе нефти. Синтез, свойства и перспективы применения</article-title><trans-title-group xml:lang="en"><trans-title>Oil-based magnetic fluids. Synthesis, properties, and application prospects</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Королев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Королев Виктор Васильевич, доктор химических наук, ведущий научный сотрудник </p><p>Иваново</p></bio><bio xml:lang="en"><p>Victor V. Korolev, Doctor of Chemistry, Lead Researcher</p><p>Ivanovo</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рамазанова</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ramazanova</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рамазанова Анна Геннадьевна, кандидат химических наук, научный сотрудник </p><p>Иваново</p></bio><bio xml:lang="en"><p>Anna G. Ramazanova, Candidate of Chemistry, Researcher </p><p>Ivanovo</p></bio><email xlink:type="simple">agr@isc-ras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балмасова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Balmasova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Балмасова Ольга Владимировна, кандидат химических наук, научный сотрудник </p><p>Иваново</p></bio><bio xml:lang="en"><p>Olga V. Balmasova, Candidate of Chemistry, Researcher </p><p>Ivanovo</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яшкова</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Yashkova</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яшкова Валентина Ивановна, инженер-исследователь </p><p>Иваново</p></bio><bio xml:lang="en"><p>Valentina I. Yashkova, Research Associate </p><p>Ivanovo</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Валеев</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Valeev</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валеев Альберт Ильгизярович, менеджер проекта по новым технологиям, Группа новых технологий УППРиГТМ, Подразделение заместителя Генерального директора — Главного геолога</p><p>Нефтеюганск</p></bio><bio xml:lang="en"><p>Albert I. Valeev, New Technology Project Manager, New Technology Group, UPRP &amp; GTM, Unit of Deputy General Director — Chief Geologist </p><p>Nefteyugansk</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии растворов им. Г.А. Крестова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «РН-Юганскнефтегаз»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>RN-Yuganskneftegaz Ltd.</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>11</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>6</issue><fpage>94</fpage><lpage>109</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Королев В.В., Рамазанова А.Г., Балмасова О.В., Яшкова В.И., Валеев А.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Королев В.В., Рамазанова А.Г., Балмасова О.В., Яшкова В.И., Валеев А.И.</copyright-holder><copyright-holder xml:lang="en">Korolev V.V., Ramazanova A.G., Balmasova O.V., Yashkova V.I., Valeev A.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://tumnig.tyuiu.ru/jour/article/view/1072">https://tumnig.tyuiu.ru/jour/article/view/1072</self-uri><abstract><p>В данной работе были синтезированы и исследованы магнетитовые магнитные жидкости на основе нефти. Определены их физико-химические параметры (плотность, вязкость, размер частиц магнитной фазы). Проведен ИК-спектроскопический и термогравиметрический анализ. Микрокалориметрическим методом определены магнитокалорические свойства (магнитокалорический эффект и теплоемкость) магнитных жидкостей в интервале температур 278–350 К при изменении магнитного поля от 0 до 1,0 Тл. Максимальное значение магнитокалорического эффекта магнитной жидкости с объемной концентрацией магнитной фазы 0,08 составляет 0,0035 К при 310 К и магнитной индукции 1,0 Тл. Полученные образцы магнитных жидкостей имеют низкую себестоимость по сравнению с устойчивыми магнитными жидкостями на основе полиэтилсилоксанов и алкаренов, так как в качестве жидкости-носителя используется нефть.</p></abstract><trans-abstract xml:lang="en"><p>In this work, magnetite crude oil-based magnetic fluids have been synthesized and studied. Their physicochemical parameters (density, viscosity, magnetic phase particle size) have been determined. IR spectroscopy and thermogravimetric analysis have been performed. The magnetocaloric properties (magnetocaloric effect and heat capacity) of magnetic fluids have been determined by the microcalorimetric method in the temperature range of 278-350 K in the magnetic field changing its value from 0 to 1.0 T. The maximum value of the magnetocaloric effect of a magnetic fluid with a magnetic phase volume concentration of 0.08 is 0.0035 K at 310 K and at the magnetic induction to 1.0 T. The obtained samples of magnetic fluids have low production costs because crude oil is used as the carrier fluid and can be recommended for various applications of the petroleum and gas industry, for example, for well killing.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитная жидкость</kwd><kwd>магнетокалорический эффект</kwd><kwd>удельная теплоемкость</kwd><kwd>нефтяная промышленность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetic fluid</kwd><kwd>magnetocaloric effect</kwd><kwd>heat capacity</kwd><kwd>petroleum industry</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Программы РАН (№ гос. регистр. 122040500044-4). Работа выполнена с помощью ЦКП «Верхневолжский областной центр физико-химических исследований».</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">Ko, S. 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