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<article 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" article-type="research-article" dtd-version="1.1d1" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher">Kazakhstan journal for oil &amp; gas industry</journal-id><journal-title-group><journal-title>Kazakhstan journal for oil &amp; gas industry</journal-title></journal-title-group><issn publication-format="print">2707-4226</issn><issn publication-format="electronic">2957-806X</issn><publisher><publisher-name>KMG Engineering</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">95612</article-id><article-id pub-id-type="doi">10.54859/kjogi95612</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Component composition of dissolved organic compounds of sewage water of uzen’ oilfield</article-title></title-group><contrib-group><contrib contrib-type="author"><name name-style="western"><surname>Suleimen</surname><given-names>Yerlan Melsuly</given-names></name><bio>&lt;p&gt;PhD in Chemistry, Expert of the Department of Engineering Design, Director of the Institute of Applied Chemistry&lt;/p&gt;</bio><email>Ye.Suleimen@niikmg.kz</email><xref ref-type="aff" rid="aff-1"/><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Sabirov</surname><given-names>Renatzhan U.</given-names></name><bio>&lt;p&gt;Leading Engineer of the Engineering Design Department&lt;/p&gt;</bio><email>R.Sabirov@niikmg.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Sisenbaeva</surname><given-names>Marziya R.</given-names></name><email>Sisenbaeva_M@kaznipi.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author"><name name-style="western"><surname>Talipbekov</surname><given-names>Abilseit D,</given-names></name><bio>&lt;p&gt;Director of the Engineering Design Department&lt;/p&gt;</bio><email>A.Talipbekov@niikmg.kz</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff id="aff-1">LLP "KMG Engineering"</aff><aff id="aff-2">Eurasian National University named after L.N. Gumilyov</aff><pub-date date-type="epub" iso-8601-date="2020-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2020</year></pub-date><volume>2</volume><issue>1</issue><fpage>83</fpage><lpage>92</lpage><history><pub-date date-type="received" iso-8601-date="2021-12-29"><day>29</day><month>12</month><year>2021</year></pub-date><pub-date date-type="accepted" iso-8601-date="2021-12-29"><day>29</day><month>12</month><year>2021</year></pub-date></history><permissions><copyright-statement>Copyright © 2020, Suleimen Y.M., Sabirov R.U., Sisenbaeva M.R., Talipbekov A.D.</copyright-statement><copyright-year>2020</copyright-year></permissions><abstract>&lt;p&gt;The composition of extracts of volatile dissolved organic compounds of the wastewater of the Ozen oilfield was studied by chromatography-mass spectrometry (GC/MS). It has been established that the main components are hydrocarbons. It should be noted the presence in the water of benzyl chloride (benzene chloride) -1.3%, the content of which is strictly regulated in oil. A low content of organic acids (palmitic acid) is observed. It should also be noted the presence of tertiary N, N-dimethyldodecanamine (C-12) upto 2.3% and N, N-dimethyltridecanamine (C-13), which are components of corrosion inhibitors. The presence of xylene, mesitylene, 1,2,3-trimethylbenzene and 2,6-dimethylnaphthalene indicates the possible use of the demulsifier type Tretolite. A significant amount of squalene, which is a natural biomarker of oils has also been discovered.&lt;/p&gt;</abstract><kwd-group xml:lang="en"><kwd>Uzen deposit</kwd><kwd>waste water</kwd><kwd>chromatography-mass spectrometry</kwd><kwd>component composition</kwd><kwd>dissolved volatile organic compounds</kwd><kwd>paraffins</kwd><kwd>corrosion inhibitors</kwd><kwd>emulsifiers</kwd><kwd>organic acids</kwd><kwd>organochlorine compounds</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>месторождение Узень</kwd><kwd>сточная вода</kwd><kwd>хромато-масс-спектрометрия</kwd><kwd>компонентный состав</kwd><kwd>растворенные летучие органические соединения</kwd><kwd>парафины</kwd><kwd>ингибиторы коррозии</kwd><kwd>эмульгаторы</kwd><kwd>органические кислоты</kwd><kwd>хлор-органические соединения</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Муллаев Б.Т., Абитова А.Ж., Саенко О.Б., Туркпенбаева Б.Ж. Месторождение Узень. 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