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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">proneft</journal-id><journal-title-group><journal-title xml:lang="ru">PROНЕФТЬ. Профессионально о нефти</journal-title><trans-title-group xml:lang="en"><trans-title>PROneft. Professionally about Oil</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-7399</issn><issn pub-type="epub">2588-0055</issn><publisher><publisher-name>«Газпром нефть»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.51890/2587-7399-2025-10-2-14-28</article-id><article-id custom-type="elpub" pub-id-type="custom">proneft-554</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>ГЕОЛОГИЯ И ГЕОЛОГО-РАЗВЕДОЧНЫЕ РАБОТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GEOLOGY AND EXPLORATIONS</subject></subj-group></article-categories><title-group><article-title>Теория отбора глубинных проб в многофазных потоках. Часть 3: типология искажений проб пластовых флюидов</article-title><trans-title-group xml:lang="en"><trans-title>Theory of downhole sampling in multiphase flows. Part 3: typology of distortion of reservoir fluid samples</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6085-4636</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лобанов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lobanov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Александрович Лобанов — кандидат технических наук, эксперт; доцент</p><p>Scopus Author ID: 57204039678 </p><p>190000, г. Санкт-Петербург, ул. Почтамтская, д. 3–5</p><p>420008, Респ. Татарстан, г. Казань, ул. Кремлевская, д. 18</p></bio><bio xml:lang="en"><p>Alexey A. Lobanov — Cand. Sci. (Tech.), Expert; Assistant Professor</p><p>Scopus Author ID: 57204039678 </p><p>3–5, Pochtamtamtskaya str., 190000, Saint Petersburg </p><p>18, Kremlevskaya str., 420008, Rep. Tatarstan, Kazan </p></bio><email xlink:type="simple">ProNeft@gazprom-neft.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>Купоросов</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuporosov</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Николаевич Купоросов — эксперт </p><p>Санкт-Петербург </p></bio><bio xml:lang="en"><p>Dmitry N. Kuporosov — Expert </p><p>Saint Petersburg </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Южанинов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuzhaninov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Васильевич Южанинов — эксперт </p><p>Санкт-Петербург </p></bio><bio xml:lang="en"><p>Andrey V. Yuzhaninov — Expert </p><p>Saint Petersburg </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фукс</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Fuks</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Борисович Фукс — доктор геолого-минералогических наук, главный научный сотрудник</p><p>Москва </p></bio><bio xml:lang="en"><p>Alexander B. Fuks — Dr. Sci. (Geol.-Min.), Chief researcher </p><p>Moscow </p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Группа компаний «Газпром нефть» ; Казанский (Приволжский) федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Gazprom neft companу group ; Kazan Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Группа компаний «Газпром нефть»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Gazprom neft companу group</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФБУ «Государственная комиссия по запасам полезных ископаемых»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Commission on Mineral Resources</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>11</day><month>07</month><year>2025</year></pub-date><volume>10</volume><issue>2</issue><fpage>14</fpage><lpage>28</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лобанов А.А., Купоросов Д.Н., Южанинов А.В., Фукс А.Б., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Лобанов А.А., Купоросов Д.Н., Южанинов А.В., Фукс А.Б.</copyright-holder><copyright-holder xml:lang="en">Lobanov A.A., Kuporosov D.N., Yuzhaninov A.V., Fuks A.B.</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://proneft.elpub.ru/jour/article/view/554">https://proneft.elpub.ru/jour/article/view/554</self-uri><abstract><p>Введение и цель. На данный момент в отрасли отсутствует единый документ, регламентирующий интерпретацию результатов исследований проб, искаженных относительно того или иного состояния пластового флюида. Вследствие этого абсолютно правильное утверждение о том, что каждая проба несет информацию о свойствах исследуемого объекта, зачастую понимается превратно и параметры проб принимаются в осреднение без анализа их истории и свойств. Решение этой проблемы является базовой задачей для создания методологического и технологического основания повышения качественной изученности пластовых флюидов.Материалы и методы. При разработке использовались методы системного подхода, экспертного опроса и мысленного эксперимента.Результаты. Представлена терминологическая система для описания процесса интерпретации флюидной информации; классифицированы корреляции, применяемые при этом анализе; предложена типология искажений свойств пластовой нефти и некоторые области ее применения.Заключение. Рекомендуется использовать предложения при формировании нормативно-методической документации в области экспертизы свойств пластовых флюидов.</p></abstract><trans-abstract xml:lang="en"><sec><title>Introduction and aim</title><p>Introduction and aim. At the moment, there is no single document in the industry regulating the interpretation of the results of studies of samples distorted with respect to a particular state of the reservoir fluid. As a result, the absolutely correct statement that each sample carries information about the properties of the object under study is often misunderstood and the parameters of the samples are taken into averaging without analyzing their history and properties. Solving this problem is a basic task for creating a methodological and technological basis for improving the qualitative knowledge of reservoir fluids.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The methods of a systematic approach, expert survey and thought experiment were used in the development.</p></sec><sec><title>Results</title><p>Results. A terminological system is presented to describe the process of interpreting fluid information; correlations used in this analysis are classified; a typology of distortions in the properties of reservoir oil and some areas of its application are proposed.</p></sec><sec><title>Conclusion</title><p>Conclusion. It is recommended to use the proposals in the It is recommended to use the proposals in the Development of normative and methodological documentation in the fi eld of expert examination of the properties of reservoir fluids.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>корреляции свойств пластовых флюидов</kwd><kwd>искажения проб</kwd><kwd>экспертиза</kwd><kwd>PVT</kwd></kwd-group><kwd-group xml:lang="en"><kwd>correlations of reservoir fluid properties</kwd><kwd>sample distortions</kwd><kwd>expertise</kwd><kwd>PVT</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">работа выполнена при поддержке средств субсидии, выделенной Казанскому федеральному университету для выполнения государственного задания в сфере научной деятельности (проект № FZSM-2024-0003).</funding-statement><funding-statement xml:lang="en">this work was funded by the subsidy allocated to Kazan Federal University for state assignment in the sphere of scientific activities (Project no. 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