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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.2022.2.17</article-id><article-id custom-type="elpub" pub-id-type="custom">geores-144</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>О «палеозойских корнях» нефтей Восточного Предкавказья</article-title><trans-title-group xml:lang="en"><trans-title>About “Paleozoic roots” of the oils of the eastern Ciscaucasia</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>Яндарбиев</surname><given-names>Н. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Yandarbiev</surname><given-names>N. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нурдин Шамаевич Яндарбиев – кандидат геол.-мин. наук, доцент кафедры геологии и геохимии горючих ископаемых</p><p>119333, Москва, Ленинский проспект, д. 60\2</p></bio><bio xml:lang="en"><p>Nurdin Sh. Yandarbiev – PhD (Geology and Mineralogy), Associate Professor, Petroleum Geology Department</p><p>60/2, Leninsky ave., Moscow, 119234</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Заксенхофер</surname><given-names>Р. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Sachsenhofer</surname><given-names>R. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Райнхард Заксенхофер – профессор, заведующий кафедрой нефтяной геологии, факультет прикладных геонаук и геофизики</p><p>8700, Леобен, ул. Петер-Тюннер, д. 5</p></bio><bio xml:lang="en"><p>Reinhard F. Sachsenhofer – Professor, Head of Petroleum Geology</p><p>5, Peter-Tunner st., Leoben, 8700</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>Степанов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Николаевич Степанов – кандидат геол.-мин. наук, председатель правления</p><p>400001, Волгоград, ул. Канунникова, д. 6, оф. 220</p></bio><bio xml:lang="en"><p>Andrey N. Stepanov – PhD (Geology and Mineralogy), Chairman of the Board</p><p>of 220, 6, Kanunnikov st., Volgograd, 400001</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яндарбиева</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Yandarbieva</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Диана Нурдиновна Яндарбиева – магистрант, кафедра геологии и геохимии горючих ископаемых</p><p>119333, Москва, Ленинский проспект, д. 60\2</p></bio><bio xml:lang="en"><p>Diana N. Yandarbieva – Graduate student, Petroleum Geology Department</p><p>60/2, Leninsky ave., 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><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Горный университет Леобен</institution><country>Австрия</country></aff><aff xml:lang="en"><institution>Montanuniversitaet Leoben</institution><country>Austria</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Волгоградского научно-технического общества нефтяников и газовиков имени акад. И.М. Губкина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Gubkin Scientific and Technical Society of Oil and Gas Workers in Volgograd</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>14</day><month>04</month><year>2024</year></pub-date><volume>24</volume><issue>2</issue><fpage>186</fpage><lpage>191</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Яндарбиев Н.Ш., Заксенхофер Р.Ф., Степанов А.Н., Яндарбиева Д.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Яндарбиев Н.Ш., Заксенхофер Р.Ф., Степанов А.Н., Яндарбиева Д.Н.</copyright-holder><copyright-holder xml:lang="en">Yandarbiev N.S., Sachsenhofer R.F., Stepanov A.N., Yandarbieva D.N.</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/144">https://www.geors.ru/jour/article/view/144</self-uri><abstract><p>В работе рассматриваются геохимические данные о биомаркерном составе нефтей месторождений ТерскоКаспийского нефтегазоносного бассейна. Изучены пробы нефтей месторождений основных нефтегазоносных районов Восточного Предкавказья – Терско-сунженского, Прикумского вала, Предгорного Дагестана и акватории среднего Каспия. Для определения «геохимического» возраста нефтей анализировались соотношения регулярных стеранов в насыщенных фракциях углеводородных флюидов. установлено, что значение биомаркерного параметра с28/с29, определяющего геологический возраст исходного для нефтей органического вещества, варьирует в широких пределах – 0,36–1,47. Наиболее «древний» возраст (девон-карбон) определен для нефтей Прикумского вала и акватории среднего Каспия. В Терско-сунженской зоне и Предгорном Дагестане в нефтях фиксируется возрастание доли стерана состава с28, что указывает на более молодой возраст генерации (вплоть до палеогена). Полученные данные могут быть использованы для уточнения истории формирования углеводородных скоплений в данном регионе.</p></abstract><trans-abstract xml:lang="en"><p>The paper considers geochemical data on the biomarker composition of oils from the fields of the TerekCaspian oil and gas basin. Samples of oils from the fields of the main oil and gas bearing regions of the Eastern Ciscaucasia – Terek-Sunzha zone, Prikumsky swell, Piedmont Dagestan and the Middle Caspian Sea were studied. To determine the “geochemical” age of oils, the ratios of regular steranes in saturated oil fractions were analyzed. It was found that the value of the biomarker parameter St28/St29, which determines the geological age of the original organic matter for oils, varies widely – 0.36–1.47. The most “ancient” age (Devonian-Carboniferous) was determined for the oils of the Prikumsky swell and the water area of the Middle Caspian; in the Terek-Sunzha zone and Piedmont Dagestan, an increase in the proportion of St28 sterane is recorded in oils, which indicates a younger generation age (up to the Paleogene). The data obtained can be used to clarify the history of the formation of hydrocarbon accumulations in this region.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Терско-Каспийский нефтегазоносный бассейн</kwd><kwd>Терско-сунженская зона</kwd><kwd>Предгорный Дагестан</kwd><kwd>Прикумский вал</kwd><kwd>акватория Каспия</kwd><kwd>геохимия</kwd><kwd>нефтяные месторождения</kwd><kwd>биомаркерные показатели</kwd><kwd>возраст нефтей</kwd><kwd>стераны</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Terek-Caspian oil and gas basin</kwd><kwd>Terek-Sunzha zone</kwd><kwd>Piedmont Dagestan</kwd><kwd>Prikumsky swell</kwd><kwd>middle Caspian</kwd><kwd>geochemistry</kwd><kwd>oil fields</kwd><kwd>biomarkers</kwd><kwd>oil age</kwd><kwd>steranes</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">Петров Ал.А. (1991). Геохимическое значение стеранов. 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