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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gscience</journal-id><journal-title-group><journal-title xml:lang="en">Mining Science and Technology (Russia)</journal-title><trans-title-group xml:lang="ru"><trans-title>Горные науки и технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-0632</issn><publisher><publisher-name>The National University of Science and Technology MISiIS (NUST MISIS)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/2500-0632-2020-4-288-296</article-id><article-id custom-type="elpub" pub-id-type="custom">gscience-248</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="en"><subject>GEOLOGY OF MINERAL DEPOSITS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ГЕОЛОГИЯ МЕСТОРОЖДЕНИЙ ПОЛЕЗНЫХ ИСКОПАЕМЫХ</subject></subj-group></article-categories><title-group><article-title>About Relations between Natural Gas and Oil in Connection with Forecast of Their Reserves in Azerbaijan</article-title><trans-title-group xml:lang="ru"><trans-title>О соотношении природного газа и нефти в связи с прогнозом их запасов в Азербайджане</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>Фейзуллаев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Feizullaev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Baku</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт геологии и геофизики Национальной Академии Наук Азербайджана<country>Азербайджан</country></aff><aff xml:lang="en">Institute of Geology and Geophysics of National Academy of Sciences of Azerbaijan<country>Azerbaijan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>06</day><month>01</month><year>2021</year></pub-date><volume>5</volume><issue>4</issue><fpage>288</fpage><lpage>296</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Feizullaev A.A., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Фейзуллаев А.А.</copyright-holder><copyright-holder xml:lang="en">Feizullaev A.A.</copyright-holder><license 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://mst.misis.ru/jour/article/view/248">https://mst.misis.ru/jour/article/view/248</self-uri><abstract><p>Azerbaijan is one of the oldest oil and gas provinces, where more than 2 bln tons of oil have been extracted over more than a century. At present, the oil production is declining and mainly determined by production from the Azeri-Chirag-Guneshli offshore block (AChG). Compared to oil, the opportunities for further growing natural gas reserves and production are very promising. For the latest years, a number of large gas condensate fields have been discovered in the deep-water part of South Caspian Sea, such as Shakh-Deniz, Apsheron, Umid. There are a number of prospects that have not yet been drilled in this part of the sea basin. The paper assesses their prospectivity, substantiates the priority exploration targets and, on the basis of the statistical analysis of the quantitative gas/oil ratio data for many other Azerbaijanian and world basins, an attempt is made to assess the reserves in the prospects. The total recoverable oil reserves in Azerbaijan are estimated at 3.5 bln tons, of which slightly above 2 bln tons have already been extracted. Based on the statistically estimated ratio between the volumes of gas and oil in various basins of the world, including Azerbaijan, the total possible natural gas reserves in Azerbaijan are estimated at about 4 trillion m3 . This is in agreement with the other available estimates. Of this volume of natural gas, 0.85 trillion m3 has already been extracted, and the approved geological reserves are estimated at 2.55 trillion m3 . Almost 83% of the extracted natural gas belonged to offshore fields. This trend will continue in the future, and, moreover, will be strengthened due to large volumes of gas condensate accumulations in the deepwater part of the basin. In this part of the basin, the most attractive prospects are Mashal, Shafag, and Israfil Huseynov, total reserves of which are expected at 0.6 trillion m3 of natural gas.</p></abstract><trans-abstract xml:lang="ru"><p>Азербайджан является одной из старейших нефтегазоносных провинций, где за более чем вековой период из недр добыто более 2 млрд т нефти. В настоящее время добыча нефти идет на спад и в основном определяется добычей из морского блока Азери – Чираг – Гюнешли. В сравнении с нефтью перспективы дальнейшего прироста запасов и добычи газа очень высокие. В последние годы в глубоководной части Южного Каспия выявлен ряд крупных газоконденсатных месторождений, таких как Шах-Дениз, Апшерон, Умид. В этой части бассейна имеется ряд еще не разбуренных структур. В связи с этим в статье оценены их перспективы, обоснованы первоочередные поисковые объекты и на основании выполненного статистического анализа количественного соотношения газа и нефти по данным различных бассейнов/стран мира, а также Азербайджана предпринята попытка оценить запасы в них газа. Суммарные извлекаемые запасы нефти в Азербайджане оцениваются в 3,5 млрд т, из которых извлечено чуть более 2 млрд т. Исходя из статистически выявленного соотношения между объемами газа и нефти в различных бассейнах (странах) мира, включая и Азербайджан, прогнозная оценка суммарных запасов газа в Азербайджане составляет около 4 трлн м3 . Это в целом согласуется с существующими оценками. Из этого объема газа уже добыто 0,85 трлн м3 , а утвержденные перспективные запасы газа оцениваются в 2,55 трлн м3 . Почти 83 % газа добыто из морских месторождений. Эта тенденция в будущем не только сохранится, но и будет увеличиваться благодаря введению в разработку крупных газоконденсатных скоплений в глубоководной части бассейна. В этой части бассейна к наиболее перспективным могут быть отнесены структуры Машал, Шафаг и Исрафил Гусейнов, суммарные запасы в которых прогнозируются в 0,6 трлн м3 газа.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>садочный бассейн</kwd><kwd>газ</kwd><kwd>нефть</kwd><kwd>месторождения</kwd><kwd>добыча</kwd><kwd>соотношение</kwd><kwd>запасы</kwd><kwd>Азербайджан</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sedimentary basin</kwd><kwd>gas</kwd><kwd>oil</kwd><kwd>fields</kwd><kwd>extraction</kwd><kwd>ratio</kwd><kwd>reserves</kwd><kwd>Azerbaijan</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">Kadirov F., Floyd M., Alizadeh A., Guliev I., Reilinger R., Kuleli S., King R., Nafi Toksoz M. 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