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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.2021.2.10</article-id><article-id custom-type="elpub" pub-id-type="custom">geores-200</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>Геолого-геохимические условия формирования состава нефтей залежей пермского и юрского нефтегазоносных комплексов впадины Фукан (бассейн Джунгария)</article-title><trans-title-group xml:lang="en"><trans-title>Geological and geochemical conditions for the formation of the oil composition in the deposits of the Permian and Jurassic oil and gas complexes in the Fukang depression (Junggar basin)</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>Ян</surname><given-names>Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Yang</surname><given-names>H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хоуцян Ян – аспирант кафедры геологии и геохимии горючих ископаемых</p><p>119234, Москва, Ленинские горы, д. 1</p></bio><bio xml:lang="en"><p>Houqiang Yang – PhD student, Petroleum Geology Department</p><p>1, Leninskie gory, Moscow, 119234</p></bio><email xlink:type="simple">yanghouqiang@qq.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>Соболева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Soboleva</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Всеволодовна Соболева – кандидат геол.-мин. наук, доцент кафедры геологии и геохимии горючих ископаемых</p><p>119234, Москва, Ленинские горы, д. 1</p></bio><bio xml:lang="en"><p>Elena Vsevolodovna Soboleva – PhD (Geology and Mineralogy), Associate Professor, Petroleum Geology Department</p><p>1, Leninskie gory, Moscow, 119234</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>04</month><year>2024</year></pub-date><volume>23</volume><issue>2</issue><fpage>110</fpage><lpage>119</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ян Х., Соболева Е.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ян Х., Соболева Е.В.</copyright-holder><copyright-holder xml:lang="en">Yang H., Soboleva E.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/200">https://www.geors.ru/jour/article/view/200</self-uri><abstract><p>В пределах восточной части впадины Фукан основные продуктивные горизонты приурочены к пермскому и юрскому нефтегазоносным комплексам (НГК), в которых выделяются среднепермские (вордский-кептенский ярусы) и нижне-среднеюрские (геттангский-батский ярусы) нефтегазоматеринские породы (НГМП). В статье рассматриваются нефтегазоматеринские свойства среднепермских и нижне-среднеюрских пород, молекулярный состав битумоидов НГМП и нефтей, а также интерпретируются особенности состава биомаркеров в них с позиций осадочно-миграционной теории генерации нефти. объяснены причины различия свойств и состава нефтей разных НГК. Показано, что состав углеводородных флюидов залежей определяется не только геолого-геохимическими условиями седиментации нефтегазоматеринских отложений, но также связан с процессами миграции и последующими вторичными изменениями в скоплении. По составу и свойствам выделены три группы нефтей: пермские и юрские тяжелые нефти с легким изотопным составом углерода и наличием β-каротана и гаммацерана, они подверглись биодеградации разной степени, что зависело от геологических условий существования залежей; пермские средние по плотности (0,84 и 0,87 г/см3 ) нефти, состав биомаркеров которых очень близок к аналогичному составу первой группы и юрские легкие нефти с высоким содержанием твердых парафинов и более тяжелым изотопным составом углерода, почти не содержат β-каротана и концентрации гаммацерана низкие.</p></abstract><trans-abstract xml:lang="en"><p>Within the eastern part of the Fukang depression, the main productive series are confined to the Permian and Jurassic oil and gas complexes (OGC), in which the Middle Permian and Lower-Middle Jurassic oil and gas source rocks (OGSRs) are distinguished. The article discusses in detail the oil and gas source characteristics of the Middle Permian and Lower-Middle Jurassic rocks, the molecular composition of oils and bitumoids from the OGSRs, and also interprets the characteristics of the biomarkers in them from the standpoint of the sedimentary-migration theory of oil generation. An attempt is made to explain the reasons for the difference in the properties and composition of oils from different OGCs. It is shown that the composition of hydrocarbon fluids of deposits is determined not only by the geological and geochemical conditions of sedimentation of oil and gas source deposits, but also associated with migration processes and subsequent secondary changes in the accumulation. In terms of composition, three groups of oils were identified: Permian and Jurassic heavy oils with a light carbon isotopic composition and the presence of β-carotene and gammacerane, they underwent different degrees of biodegradation, which depended on the geological conditions of the deposits; Permian medium oils in density (0.84 and 0.87 g/cm3 ), the composition of biomarkers of which is very close to that of the first group, and Jurassic light oils with a high content of solid paraffins and a heavier carbon isotopic composition, almost do not contain β-carotene and gammacerane concentrations are low.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пиролиз Rock-Eval</kwd><kwd>генерационный потенциал</kwd><kwd>углеводородные флюиды</kwd><kwd>условия седиментации</kwd><kwd>геолого-геохимические условия</kwd><kwd>нефтегазоматеринские породы</kwd><kwd>формирование залежей</kwd><kwd>молекулярный состав</kwd><kwd>биомаркеры</kwd><kwd>впадина Фукан</kwd><kwd>Джунгарский нефтегазоносный бассейн.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Rock-Eval pyrolysis</kwd><kwd>generation potential</kwd><kwd>hydrocarbon fluids</kwd><kwd>sedimentation conditions</kwd><kwd>geological and geochemical conditions</kwd><kwd>source rocks</kwd><kwd>deposits formation</kwd><kwd>molecular composition</kwd><kwd>biomarkers</kwd><kwd>Fukang depression</kwd><kwd>Junggar oil and gas basin</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">Галимов Э.М. 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