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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">kaz29</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Казахстанско-Британского технического университета</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of the Kazakh-British Technical University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6688</issn><issn pub-type="epub">2959-8109</issn><publisher><publisher-name>Казахстанско-Британский Технический Университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55452/1998-6688-2022-19-2-39-48</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz29-522</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>НЕФТЕГАЗОВАЯ ИНЖЕНЕРИЯ И ГЕОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OIL AND GAS ENGINEERING, GEOLOGY</subject></subj-group></article-categories><title-group><article-title>ПРИМЕНЕНИЕ АНАЛИЗА СТАБИЛЬНОСТИ СМЕСИ УГЛЕВОДОРОДОВ МЕСТОРОЖДЕНИЯ Х И У ДЛЯ ПРОГНОЗИРОВАНИЯ ВЫПАДЕНИЯ ПАРАФИНА</article-title><trans-title-group xml:lang="en"><trans-title>AN APPLICATION OF STABILITY ANALYSIS OF HYDROCARBON MIXTURES FROM X AND Y FIELDS TO PREDICT WAX PRECIPITATION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7217-6238</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>БАЗАРБАЕВА</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>BAZARBAYEVA</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Базарбаева Макпал Булатовна - студент бакалавриата</p><p>050000, г. Алматы, ул. Сатпаева, 22</p></bio><bio xml:lang="en"><p>Bazarbayeva Makpal Bulatovna - Bachelor student</p><p>050000, Almaty, Satpayev st. 22</p></bio><email xlink:type="simple">makpal.bazarbayeva.pe@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/0000-0002-7680-7084</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ИСМАИЛОВА</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>ISMAILOVA</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Исмаилова Джамилям Абдулахатовна - доктор технических наук</p><p>050000, г. Алматы, ул. Сатпаева, 22</p></bio><bio xml:lang="en"><p>Ismailova Jamilyam Abdulakhatovna - PhD</p><p>050000, Almaty, Satpayev st. 22</p></bio><email xlink:type="simple">j.Ismailova@satbayev.university</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6570-2810</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>АБДУКАРИМОВ</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>ABDUKARIMOV</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абдукаримов Айбек Кенжебекович - магистр технических наук, PhD докторант</p><p>050000, г. Алматы, ул. Сатпаева, 22</p></bio><bio xml:lang="en"><p>Abdukarimov Aibek Kenzhebekovich - MSc in Petroleum Engineering, PhD student</p><p>050000, Almaty, Satpayev st. 22</p></bio><email xlink:type="simple">abdukarimov1303@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/0000-0001-5442-4763</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ДЕЛИКЕШЕВА</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>DELIKESHEVA</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Деликешева Динара Насипуловна - магистр технических наук</p><p>050000, г. Алматы, ул. Сатпаева, 22</p></bio><bio xml:lang="en"><p>Delikesheva Dinara Nasipulovna - MSc</p><p>050000, Almaty, Satpayev st. 22</p></bio><email xlink:type="simple">delikesheva@satbayev.university</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7112-8920</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>МОМБЕКОВ</surname><given-names>Б. И.</given-names></name><name name-style="western" xml:lang="en"><surname>MOMBEKOV</surname><given-names>B. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Момбеков Багдат Исаханович - магистр технических наук</p><p>050000, г. Алматы, ул. Сатпаева, 22</p></bio><bio xml:lang="en"><p>Mombekov Bagdat Isakhanovich - MSc</p><p>050000, Almaty, Satpayev st. 22</p></bio><email xlink:type="simple">b.mombekov@satbayev.university</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3211-2704</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ЗЕРПА</surname><given-names>Л.</given-names></name><name name-style="western" xml:lang="en"><surname>ZERPA</surname><given-names>L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор Луис Зепра - ассоциированный профессор нефтяной инженерии</p><p>80401, Колорадо, Голден, Иллинойс-Стрит, 1500</p></bio><bio xml:lang="en"><p>Dr. Luis Zepra - Associate Professor of Petroleum Engineering</p><p>80401, Colorado, Golden, Illinois St., 1500</p><p> </p></bio><email xlink:type="simple">lzerpa@mines.edu</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Казахский национальный исследовательский технический университет  имени К.И. Сатпаева<country>Казахстан</country></aff><aff xml:lang="en">Satbayev University<country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Колорадская горная школа<country>Соединённые Штаты Америки</country></aff><aff xml:lang="en">Colorado School of Mines<country>United States</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>04</day><month>07</month><year>2022</year></pub-date><volume>19</volume><issue>2</issue><fpage>39</fpage><lpage>48</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; БАЗАРБАЕВА М.Б., ИСМАИЛОВА Д.А., АБДУКАРИМОВ А.К., ДЕЛИКЕШЕВА Д.Н., МОМБЕКОВ Б.И., ЗЕРПА Л., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">БАЗАРБАЕВА М.Б., ИСМАИЛОВА Д.А., АБДУКАРИМОВ А.К., ДЕЛИКЕШЕВА Д.Н., МОМБЕКОВ Б.И., ЗЕРПА Л.</copyright-holder><copyright-holder xml:lang="en">BAZARBAYEVA M.B., ISMAILOVA D.A., ABDUKARIMOV A.K., DELIKESHEVA D.N., MOMBEKOV B.I., ZERPA L.</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://vestnik.kbtu.edu.kz/jour/article/view/522">https://vestnik.kbtu.edu.kz/jour/article/view/522</self-uri><abstract><p>Термодинамическое описание осаждения парафина – относительно новый подход в решении проблемы выпадения парафина, с которой нефтегазовая индустрия борется довольно продолжительное время. В литературе существует множество моделей с целью прогнозирования термодинамических условий, при которых образуется первый кристалл парафина. Первой задачей во всех моделях является определение стабильности смеси углеводородов для того, чтобы определить перспективу выпадения парафина. Стабильность смеси определяется термодинамическим поведением фаз многокомпонентной смеси, а именно нахождением всех существующих фаз в равновесии. С этой целью разработан новый алгоритм стабильности с минимизацией энергии Гиббса для определения осаждения парафина в углеводородных смесях. Алгоритм основан на термодинамической модели multi-solid с концепциями УС. Главный критерий устойчивости – нахождение смеси в ее глобальном минимуме. Предлагаемый анализ стабильности предсказывает, будет ли данная смесь разделена на несколько фаз или будет существовать как одна фаза при заданных условиях температуры и давления. Модель была проверена на 6 образцах из месторождений X и Y, показывающих нестабильность исходных нефтяных смесей, что согласуется с реальным поведением нефти в условиях месторождения. Результаты нового алгоритма устойчивости сопоставимы с результатами моделей, представленных ранее. Главное достоинство метода – простота и надежность.</p></abstract><trans-abstract xml:lang="en"><p>The thermodynamic description of wax deposition is a relatively new approach to solving the problem of wax precipitation, which the oil and gas industry has been struggling with for a long time. Many models exist in the literature to predict the thermodynamic conditions under which the first paraffin crystal is formed. The first task in all models is to determine the stability of the hydrocarbon mixture in order to define the possibility of wax precipitation. The stability of a mixture is determined by the thermodynamic behavior of the phases of a multicomponent mixture, namely, the presence of all existing phases in equilibrium. To this end, a new stability algorithm with Gibbs energy minimization to determine the wax precipitation in hydrocarbon mixtures has been developed. The algorithm is based on multi-solid thermodynamic model with EOS concepts. The main criterion for stability is the existing of the mixture at its global minimum. Proposed stability analysis predicts whether a given mixture will be split into multiple phases or will exist as the single phase at a given temperature and pressure conditions. The model was proven with 6 samples from fields X and Y showing the instability of original petroleum mixtures that agree with the real behavior of the oil in in-situ conditions. The results of the new stability algorithm are comparable with the results of the models presented previously. The main advantage of the method is its simplicity and reliability.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>анализ стабильности</kwd><kwd>энергия Гиббса</kwd><kwd>глобальный минимум</kwd><kwd>летучесть</kwd><kwd>описание фракции гептан-плюс</kwd><kwd>отложение парафина</kwd><kwd>химический потенциал</kwd><kwd>расщепление</kwd><kwd>фазовое равновесие</kwd><kwd>модель multi-solid</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Stability analysis</kwd><kwd>Gibbs energy</kwd><kwd>global minimum</kwd><kwd>fugacity</kwd><kwd>heptane plus characterization</kwd><kwd>wax deposition</kwd><kwd>chemical potential</kwd><kwd>splitting</kwd><kwd>phase equilibrium</kwd><kwd>multi-solid model</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">Pan H., Firoozabadi A., Fotland P., SPE Prod. 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