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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">geores</journal-id><journal-title-group><journal-title xml:lang="ru">Георесурсы</journal-title><trans-title-group xml:lang="en"><trans-title>Georesources</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1608-5043</issn><issn pub-type="epub">1608-5078</issn><publisher><publisher-name>Georesursy LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18599/grs.2025.3.7</article-id><article-id custom-type="elpub" pub-id-type="custom">geores-579</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>ГАЗОВЫЕ ГИДРАТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GAS HYDRATES</subject></subj-group></article-categories><title-group><article-title>Особенности образования гидратов природного газа со структурами КС-I и КС-II в кварцевом песке с водой и растворами полимеров</article-title><trans-title-group xml:lang="en"><trans-title>Features of natural gas hydrates formation of structures I and II in quartz sand with water and polymer solutions</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>Портнягин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Portnyagin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Альберт Серафимович Портнягин – научный сотрудник</p><p>677007, Якутск, ул. Петровского, д. 2</p></bio><bio xml:lang="en"><p>Albert S. Portnyagin – Researcher</p><p>2 Petrovskogo st., Yakutsk, 677000</p></bio><email xlink:type="simple">al220282@mail.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>Иванова</surname><given-names>И. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>I. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Изабелла Карловна Иванова – доктор хим. наук, доцент, главный научный сотрудник</p><p>677007, Якутск, ул. Петровского, д. 2</p></bio><bio xml:lang="en"><p>Izabella K. Ivanova – Doct. Sci. (Chem.), Associate Professor, Chief Researcher</p><p>2 Petrovskogo st., Yakutsk, 677000</p></bio><email xlink:type="simple">iva-izabella@yandex.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>Калачева</surname><given-names>Л. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalacheva</surname><given-names>L. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Людмила Петровна Калачева – кандидат хим. наук, исполняющий обязанности заведующего лабораторией техногенных газовых гидратов, ведущий научный сотрудник</p><p>677007, Якутск, ул. Петровского, д. 2</p></bio><bio xml:lang="en"><p>Liudmila P. Kalacheva – Cand. Sci. (Chem.), Acting Head of the Laboratory of Technogenic Gas Hydrates, Leading Researcher</p><p>2 Petrovskogo st., Yakutsk, 677000</p></bio><email xlink:type="simple">lpko@mail.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>Иванов</surname><given-names>В. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>V. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Климентьевич Иванов – младший научный сотрудник</p><p>677007, Якутск, ул. Петровского, д. 2</p></bio><bio xml:lang="en"><p>Viktor K. Ivanov – Junior Researcher</p><p>2 Petrovskogo st., Yakutsk, 677000</p></bio><email xlink:type="simple">viktorklimentievich@gmail.com</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>Портнягина</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Portnyagina</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктория Витальевна Портнягина – кандидат тех. наук, доцент Горного института</p><p>677007, Якутск, ул. ул. Белинского, д. 58</p></bio><bio xml:lang="en"><p>Victoria V. Portnyagina – Cand. Sci. (Tech.), Associate Professor, Mining Institute</p><p>677007, Yakutsk, Belinskogo st., 58</p></bio><email xlink:type="simple">vck_i@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт проблем нефти и газа Сибирского отделения РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Yakut Scientific Center of Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Северо-Восточный федеральный университет имени М.К. Аммосова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.K. Ammosov North-Eastern Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>27</day><month>09</month><year>2025</year></pub-date><volume>27</volume><issue>3</issue><fpage>89</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Портнягин А.С., Иванова И.К., Калачева Л.П., Иванов В.К., Портнягина В.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Портнягин А.С., Иванова И.К., Калачева Л.П., Иванов В.К., Портнягина В.В.</copyright-holder><copyright-holder xml:lang="en">Portnyagin A.S., Ivanova I.K., Kalacheva L.P., Ivanov V.K., Portnyagina V.V.</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.geors.ru/jour/article/view/579">https://www.geors.ru/jour/article/view/579</self-uri><abstract><p>Актуальность исследования гидратообразования многокомпонентной газовой смеси в кварцевом песке с водой и растворами полимеров обусловлена риском образования гидратов в поровом пространстве вмещающих пород при комплексном воздействии на них закачкой газа и водополимерным заводнением с целью увеличения нефтеотдачи на месторождениях, приуроченных к Непско-Ботуобинской нефтегазоносной области (НБ НГО), которые характеризуются аномально низкими пластовыми температурами. Данные месторождения располагаются в зонах непрерывного и прерывистого распространения многолетнемерзлых пород, что в сочетании с низкими значениями теплового потока и большой теплоемкости пород слагающих их продуктивные горизонты, приводят к аномально низким пластовым температурам в пределах 8–17 °С, что на 50–60 °С ниже температуры, рассчитанной по геотермическому градиенту. Таким образом, пластовые условия залегания нефти на месторождениях НБ НГО находятся в зоне стабильности гидратов пластовых газов, а переходу газовой части месторождений в газогидратное состояние препятствует лишь отсутствие достаточного количества свободной от соли воды. В работе в качестве газа-гидратообразователя использовался природный газ Средневилюйского месторождения. Гидраты этого газа были получены в образцах кварцевого песка с размером зерен 0,4–0,3 мм. Весовая влажность песка в количестве 17,6% задавалась дистиллированной водой и следующими растворами полимеров: 1 г/л раствор полиакриламида, 5 г/л раствор натриевой соли карбоксиметилцеллюлозы и 30 г/л раствор полиэтиленгликоля. Фазовые переходы при образовании и разложении гидратов в системах «природный газ-песок-вода/раствор полимера» исследовались методом термического анализа. Показано, что в исследуемых системах образуются гидраты с кубическими структурами КС-I и КC-II. Анализ газа в гидрате КC-II проводился методом газо-адсорбционной хроматографии. Установлено, что в процессе образования гидратов КC-II происходит обогащение гидратной фазы углеводородами С2-С4, что является причиной смещения термодинамических условий их образования в область высоких температур и низких давлений.</p></abstract><trans-abstract xml:lang="en"><p>The relevance of investigation of a multicomponent gas mixture hydrate formation in quartz sand with water and polymer solutions is due to the risk of the hydrate formation in the pore space of surrounding rocks under the complex effect of a gas injection and waterpolymer flooding in order to increase oil recovery at fields confined to the Nepa-Botuoba oil-and-gas bearing region (NB OGBR), which are characterized by abnormally low reservoir temperatures. These fields are located in zones of continuous and intermittent distribution of permafrost rocks, which, in combination with low values of heat flow and high heat capacity of the rocks composing their productive horizons, lead to abnormally low reservoir temperatures within 8–17 °C, which is 50–60°C lower than the temperature calculated by the geothermal gradient. Thus, the reservoir conditions of oil occurrence at the NB OGBR fields are in the hydrate stability zone of reservoir gases, and the transition of the gas to the hydrate state is prevented only by the lack of a sufficient amount of salt-free water. In the research, natural gas from the the Srednevilyui field was used as a hydrate-forming gas. Hydrates of this gas were obtained in quartz sand samples with a grain size of 0.4–0.3 mm. The sand moisture content of 17.6% was set by distilled water and the following polymer solutions: 1 g/L polyacrylamide solution, 5 g/L sodium carboxymethyl cellulose solution, and 30 g/L polyethylene glycol solution. Phase transitions during the hydrate formation and decomposition in “the natural gas-sand-water/polymer solution” systems were investigated using thermal analysis. It was shown that hydrates with cubic structures I and II are formed in systems under study. The gas analysis in the hydrate of structure II was carried out by the method of gas-adsorption chromatography. It was established that during the hydrates formation of structure II, the hydrate phase is enriched with hydrocarbons C2-C4, which is the reason for the shift of the thermodynamic conditions of their formation to the region of high temperatures and low pressures.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>природный газ</kwd><kwd>гидраты кристаллической структуры КС-I и КС-II</kwd><kwd>состав газа в гидрате</kwd><kwd>кварцевый песок</kwd><kwd>газо-адсорбционная хроматография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>natural gas</kwd><kwd>hydrates of the crystalline structure I and II</kwd><kwd>gas composition in hydrate</kwd><kwd>quartz sand</kwd><kwd>gas adsorption chromatography</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках Госзадания Минобрнауки РФ (Рег. №122011100157-5) с использованием научного оборудования ЦКП ФИЦ ЯНЦ СО РАН. Публикация статьи поддержана Министерством науки и высшего образования Российской Федерации по соглашению № 075-10-2022-011 в рамках программы развития НЦМУ.</funding-statement><funding-statement xml:lang="en">The study was conducted within the framework of the State assignment of the Ministry of Science and Education of the Russian Federation (No. 122011100157-5) on the scientific equipment of the Shared core facilities of the Federal Research Yakut Scientific Center of the Siberian Branch of the Russian Academy of Sciences. The publication of the article was supported by the Ministry of Science and Higher Education of the Russian Federation under agreement No. 075-10-2022-011 within the framework of the development program for a world-class Research Center.</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">Булейко В.М., Вовчук Г.А., Григорьев Б.А., Истомин В.А. (2014). Фазовое поведение углеводородных систем в водонасыщенном песчаном коллекторе при условиях гидратообразования. Научно-технический сборник Вести газовой науки, 4(20), с. 156–163.</mixed-citation><mixed-citation xml:lang="en">Aladko E.Ya., Dyadin Y.A., Larionov E.G. (2004). Dissociation conditions of methane hydrate in mesoporous silica gels in wide ranges of pressure and water content. Journal of Physical Chemistry B: Biophysical Chemistry, Biomaterials, Liquids, and Soft Matter, 108(42), pp. 16540–16547. 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