vuzbiochemiИзвестия вузов. Прикладная химия и биотехнологияProceedings of Universities. Applied Chemistry and Biotechnology2227-29252500-1558ИРНИТУ10.21285/2227-2925-2020-10-1-149-158vuzbiochemi-331Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯCHEMICAL TECHNOLOGYОпределение эквивалентного алканового углеродного числа западносибирских нефтей как стадия оптимизации ПАВ-полимерных композиций для химического заводненияDetermination of equivalent alkane carbon number for West Siberian oils as a stage of optimisation in surfactant-polymer compositions for chemical floodingПаничеваЛ. П.PanichevaL. P.

Паничева Лариса Петровна - доктор химических наук, профессор.

625003, Тюмень, ул. Володарского, 6.

Larisa P. Panicheva - Dr. Sci. (Chemistry), Professor, University of Tyumen.

6 Volodarsky St., Tyumen 625003.

lpanicheva@list.ruСидоровскаяЕ. А.SidorovskayaE. A.

Сидоровская Елизавета Андреевна – аспирант.

625003, Тюмень, ул. Володарского, 6.

Elizaveta A. Sidorovskaya - Postgraduate Student.

6 Volodarsky St., Tyumen 625003.

e.sidorovskaya@yandex.ruТретьяковН. Ю.Tret'yakovN. Yu.

Третьяков Николай Юрьевич - кандидат химических наук, директор ЦКП.

625003, Тюмень, ул. Володарского, 6.

Nikolai Yu. Tret'yakov - Cand. Sci. (Chemistry), Director of Research Resource Center, University of Tyumen.

6 Volodarsky St., Tyumen 625003.

nikckp@mail.ruВолковаС. С.VolkovaS. S.

Волкова Светлана Станиславовна - кандидат химических наук, заместитель директора ЦКП.

625003, Тюмень, ул. Володарского, 6.

Svetlana S. Volkova - Cand. Sci. (Chemistry), Associate Director, University of Tyumen.

6 Volodarsky St., Tyumen 625003.

svolkova2008@mail.ruТурнаеваЕ. А.TurnaevaE. A.

Турнаева Елена Анатольевна - кандидат химических наук, доцент.

625000, Тюмень, ул. Володарского, 38.

Elena A. Turnaeva - Cand. Sci. (Chemistry), Associate Professor, Tyumen Industrial University.

38 Volodarsky St., Tyumen 625000.

eturnaeva@yandex.ruГроманА. А.GromanA. A.

Громан Андрей Андреевич - начальник отдела перспективных методов увеличения нефтеотдачи.

190000, Санкт-Петербург, наб. реки Мойки, 75-79д.

Andrey A. Groman - Head of Prospective EOR unit, LLC Gazpromneft STC.

75-79d Moika River emb., St. Petersburg 190000.

Groman.AA@gazpromneft-ntc.ruНуриеваО. А.NurievaO. A.

Нуриева Ольга Александровна - ведущий специалист.

190000, Санкт-Петербург, наб. реки Мойки, 75-79д.

Olga A. Nurieva - Lead Specialist, LLC Gazpromneft STC.

75-79d Moika River emb., St. Petersburg 190000.

Nurieva.OA@gazpromneft-ntc.ruЩербаковГ. Ю.ShcherbakovG. Yu.

Щербаков Георгий Юрьевич - главный специалист отдела перспективных МУН.

190000, Санкт-Петербург, наб. реки Мойки, 75-79д.

Georgii Yu. Shcherbakov - Chief Specialist of Prospective EOR unit, LLC Gazpromneft STC.

75-79d Moika River emb., St. Petersburg 190000.

Shcherbakov.GYu@gazpromneft-ntc.ruКольцовИ. Н.KoltsovI. N.

Кольцов Игорь Николаевич - эксперт отдела перспективных МУН.

190000, Санкт-Петербург, наб. реки Мойки, 75-79д.

Igor N. Koltsov - Expert of Prospective EOR unit, LLC Gazpromneft STC.

75-79d Moika River emb., St. Petersburg 190000.

Koltsov.IN@gazpromneft-ntc.ruТюменский государственный университетРоссияUniversity of TyumenRussian FederationТюменский индустриальный университетРоссияTyumen Industrial UniversityRussian FederationГазпромнефть НТЦРоссияLLC Gazpromneft STCRussian Federation202001042020101149158Copyright © Паничева Л.П., Сидоровская Е.А., Третьяков Н.Ю., Волкова С.С., Турнаева Е.А., Громан А.А., Нуриева О.А., Щербаков Г.Ю., Кольцов И.Н., 20202020Паничева Л.П., Сидоровская Е.А., Третьяков Н.Ю., Волкова С.С., Турнаева Е.А., Громан А.А., Нуриева О.А., Щербаков Г.Ю., Кольцов И.Н.Panicheva L.P., Sidorovskaya E.A., Tret'yakov N.Y., Volkova S.S., Turnaeva E.A., Groman A.A., Nurieva O.A., Shcherbakov G.Y., Koltsov I.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vuzbiochemi.elpub.ru/jour/article/view/331

Гидрофобность нефти и нефтепродуктов может характеризоваться эквивалентным алкановым углеродным числом (EACN). Данная характеристика может быть определена на основе корреляции между данными межфазного натяжения и других характеристик для гомологичных масел и ряда алканов с последующей интерпретацией на нефти и нефтепродукты. EACN может быть использовано для подбора эффективного поверхностно-активного вещества (ПАВ) для эмульгирования нефти и нефтепродуктов. Целью данной работы являлось определение эквивалентного алканового углеродного числа ряда образцов сырой нефти, отобранных на месторождениях Западной Сибири, с использованием в качестве стандарта высокоэффективных композиций промышленных ПАВ импортного и российского производства класса сульфонатов. Для определения EACN нефти и нефтепродуктов использовалась характеристика S*– оптимальная концентрация NaCl (оптимум солености) в водной фазе ПАВ, обеспечивающая на границе с углеводородной фазой минимальное поверхностное натяжение и образование максимального объема микроэмульсии при фазовом эксперименте. Прямое определение величин межфазного натяжения на границе раствор ПАВ – нефть проводилось на тензиометре методом вращающейся капли при температуре 87 ºС.

В соответствии с эмпирическими уравнениями корреляции между параметрами фазового поведения водных растворов ПАВ с нефтью или смесью углеводородов, EACN и параметрами ПАВ выявлены линейные зависимости и определен характеристический параметр K предложенных трех стандартных композиций ПАВ, который согласуется с литературными данными для индивидуальных поверхностно-активных веществ. В работе предложены композиции промышленных ПАВ для определения EACN нефти и нефтепродуктов. Получены уравнения линейной регрессии зависимости logS* ~ EACN с высокими коэффициентами корреляции (R² = 0,9444–0,9999). Это позволило определить EACN для керосина и семи образцов нефти месторождений Западной Сибири. На основе данного показателя возможен подбор перспективных ПАВ для снижения межфазного натяжения в системе «углеводороды – водный раствор», а также прогнозирование эффективности составов с целью получения эмульсий.

The hydrophobicity of oil and oil products can be characterised in terms of its equivalent alkane carbon number (EACN). This characteristic can be determined on the basis of the correlation between the interfacial tension data and other characteristics for homologous oils and a number of alkanes having subsequent interpretation for oil and oil products. The EACN is a useful metric for selecting an effective surfactant for the emulsification of oil and oil products. The research is aimed at determining the equivalent alkane car-bon number of various crude oil samples obtained in the oil fields of Western Siberia using standard high-performance compositions of imported and domestic industrial sulphonate surfactants. In order to determine the EACN of oil and oil products, the S* characteristic was applied representing the optimal NaCl concentration (optimum salinity) in the aqueous surfactant phase, as well as providing the minimum surface tension and formation of the maximum microemulsion volume during the phase experiment at the interface with the hydro-carbon phase. Direct determination of the interfacial tension at the "oil / surfactant solution" interface was car-ried out with a tensiometer using the spinning drop method at a temperature of 87 °С. Linear dependencies are identified in accordance to the empirical correlation equations between the EACN, surfactant parameters and phase behaviour parameters of aqueous surfactant solutions and oil or a mixture of hydrocarbons. The K characteristic parameter of the proposed three standard surfactant compositions is determined to be consistent with the literature data for individual surfactants. The composition of industrial surfactants for determining the EACN of oil and oil products is proposed. The equations of linear regression for the logS* ~ EACN dependency with high correlation coefficients (R² = 0.9444-0.9999) are obtained, resulting in the determination of the EACN for kerosene and seven oil samples from Western Siberian oil fields. Promising surfactants can be selected on the basis of this indicator for reducing interfacial tension in the "hydrocarbon / water solution" system, as well as for predicting the most effective composition for obtaining emulsions.

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The authors declare that there are no conflicts of interest present.