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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">nznistu</journal-id><journal-title-group><journal-title xml:lang="ru">Науки о Земле и недропользование</journal-title><trans-title-group xml:lang="en"><trans-title>Earth sciences and subsoil use</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2686-9993</issn><issn pub-type="epub">2686-7931</issn><publisher><publisher-name>Federal State Budget Educational Institution of Higher Education "Irkutsk National Research Technical University"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/2686-9993-2026-49-2-2</article-id><article-id custom-type="edn" pub-id-type="custom">PCNWBU</article-id><article-id custom-type="elpub" pub-id-type="custom">nznistu-472</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Экспериментальное подтверждение методов повышения нефтеотдачи на месторождении Насирия</article-title><trans-title-group xml:lang="en"><trans-title>Experimental validation of enhanced oil recovery methods at the Nasiriyah field</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-8341-2857</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аль-Дахеш</surname><given-names>Х.Г.Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Al-Dahesh</surname><given-names>H.G.Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аль-Дахеш Хайдер Гани Шнешль, аспирант, Институт нефти и газа</p><p>г. Красноярск</p></bio><bio xml:lang="en"><p>Haуder Gheni Shnaishel Al-Dahesh, Postgraduate Student, Institute of Oil and Gas</p><p>Krasnoyarsk</p></bio><email xlink:type="simple">haidar.99ghane@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0048-0262</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Азеев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Azeev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Азеев Александр Александрович, кандидат технических наук, доцент, доцент кафедры разработки и эксплуатации нефтяных и газовых месторождений, Институт нефти и газа</p><p>г. Красноярск</p></bio><bio xml:lang="en"><p>Alexander A. Azeev, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Development and Operation of Oil and Gas Fields, Institute of Oil and Gas</p><p>Krasnoyarsk</p></bio><email xlink:type="simple">AAzeev@sfu-kras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian 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>16</day><month>07</month><year>2026</year></pub-date><volume>0</volume><issue>0</issue><issue-title>Принято в печать</issue-title><elocation-id>472</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Аль-Дахеш Х., Азеев А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Аль-Дахеш Х., Азеев А.А.</copyright-holder><copyright-holder xml:lang="en">Al-Dahesh H., Azeev A.A.</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.nznj.ru/jour/article/view/472">https://www.nznj.ru/jour/article/view/472</self-uri><abstract><p>В данной статье представлена программа ключевых лабораторных исследований, необходимых для экспериментального подтверждения прогнозной модели повышения нефтеотдачи пластов на месторождении Насирия (Ирак, меловая формация Мишриф). Ранее выполненное численное моделирование показало, что закачка фракционированного природного газа, обогащенного компонентами C3–C4 (сжиженные углеводородные газы), способна обеспечить смешение, вытеснение нефти при пластовых условиях: P = 25 МПа, T = 95 °C. Однако для перехода от прогнозных расчетов к технологически обоснованному решению требуется комплексная экспериментальная верификация. Предлагаемая программа включает три взаимосвязанных блока: 1) PVT-исследования пластовой нефти – верификация термодинамических свойств, калибровка уравнения состояния Пенга – Робинсона и определение факторов набухания при контакте с газовыми агентами; 2) определение минимального давления смешиваемости методом slim-tube для сырого попутного газа, обогащенной смеси (60 % C1 + 40 % C3–C4) и сжиженных углеводородных газов; 3) фильтрационные эксперименты на керновых образцах формации Мишриф – сравнение непрерывной газовой закачки и водогазового воздействия. Ожидаемые результаты позволяют калибровать гидродинамическую модель, обосновать выбор оптимального газового агента и режима закачки, а также подготовить технико-экономическое обоснование для промышленного внедрения технологии на месторождении Насирия и аналогичных карбонатных коллекторах Южного Ирака.</p></abstract><trans-abstract xml:lang="en"><p>This article presents a program of key laboratory studies required for experimental verification of a predictive model for enhanced oil recovery at the Nasiriyah field (Iraq, Cretaceous Mishrif formation). Previously performed numerical modeling demonstrated that injection of fractionated natural gas enriched with C3–C4 components (liquefied petroleum gases) can achieve miscible oil displacement under reservoir conditions of P = 25 MPa, T = 95°C. However, a comprehensive experimental verification is required to transition from predictive calculations to a technologically sound solution. The proposed program includes three interrelated blocks: 1) pressure–volume–temperature (PVT) studies of reservoir oil – verification of thermodynamic properties, calibration of the Peng–Robinson equation of state, and determination of swelling factors upon contact with gas agents; 2) determination of minimum miscibility pressure by the slim-tube method for raw associated gas, enriched mixture (60% C1 + 40% C3–C4), and liquefied petroleum gases; 3) core flooding experiments on core samples from the Mishrif formation – comparison of continuous gas injection and water-alternating gas flooding. The expected results enable calibration of the reservoir simulation model, justification of the optimal gas agent and injection mode, as well as preparation of a feasibility study for the industrial implementation at the Nasiriyah field and similar carbonate reservoirs in Southern Iraq.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>повышение нефтеотдачи</kwd><kwd>PVT-исследования</kwd><kwd>минимальное давление смешиваемости</kwd><kwd>slim-tube</kwd><kwd>фильтрационные эксперименты</kwd><kwd>водогазовое воздействие</kwd><kwd>фракционированный природный газ</kwd><kwd>карбонатный коллектор</kwd><kwd>месторождение Насирия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>enhanced oil recovery</kwd><kwd>pressure–volume–temperature (PVT) studies</kwd><kwd>minimum miscibility pressure</kwd><kwd>slim-tube</kwd><kwd>core flooding experiments</kwd><kwd>water-alternating gas injection</kwd><kwd>fractionated natural gas</kwd><kwd>carbonate reservoir</kwd><kwd>Nasiriyah field</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Shaker N., Al-Mayyahi H.K., Al-Malikee H.S. 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