CONTENTS of journal "OIL & GAS CHEMISTRY" 1-2·2022 (Russia)

KINETICS AND CATALYSIS

УДК 665.656.2
https://doi.org/10.24412/2310-8266-2022-1-2-5-9
CONVERSION OF GAS GASOLINE ON COMPOSITE CATALYTIC SYSTEMS (P. 5-9)
Mamedova M.T.
Institute of Petrochemical Processes. Academician YU.G. Mammadalieva NAS of Azerbaijan, Az 1025, Baku, Azerbaidjan Republic
ORCID: https://orcid.org/0000-0002-1714-8111, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
Composite catalytic systems have been synthesized based on zeolites or aluminum oxide and sulfated zirconium dioxide. The conversion of gas gasoline on these systems has been studied. It has been established that these systems exhibit low-temperature isomerization activity in contact with gas gasoline and allow increasing the content of C5–C6 isomeric components in gas gasoline from 43 to 61%. Found the most efficient catalyst – HZSM-5 + ZrO₂(10%) + Co(0.4%) + SO₄ 2-(2%) + Al₂O₃. It was found that when gas gasoline is contacted with composite catalytic systems, higher molecular weight C₇+ alkanes are efficiently processed not only into iso-C₅ and C₆, but also into n-pentane. It has been found that at temperatures of 160–200 °C impurity gaseous C₄-alkanes in gas condensate are utilized upon contact with the synthesized catalysts, turning into liquid alkanes.
KEYWORDS: zeolite, cobalt, sulfated zirconium dioxide, gas gasoline, low-temperature isomerization, isoalkanes.
For citation: Mamedova M.T. CONVERSION OF GAS GASOLINE ON COMPOSITE CATALYTIC SYSTEMS. Oil & Gas Chemistry. 2022, no. 1–2, pp. 5–9.

УДК 544.476
https://doi.org/10.24412/2310-8266-2022-1-2-00-10-14
PRODUCTION OF AROMATIC HYDROCARBONS FROM LIGNIN ON IRON-CONTAINING CATALYSTS (P. 10-14)
Karimov O.KH.¹, Karimov E.KH.², Teptereva G.A.², Movsumzade E.M. ²,³, Kolchina G.YU. ⁴, Bukanova A.S.⁵, Kayrlieva F.B.⁵, Kharin S.V.¹, Terskova A.P.¹
¹MIREA – Russian Technological University, 119454, Moscow, Russia
ORCID: https://orcid.org/0000-0002-0383-4268, Е-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0001-8723-1976, Е-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0001-8723-1976, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
²Ufa State Petroleum Technological University, 450062, Ufa, Russia
ORCID: http://orcid.org/0000-0002-4224-4586, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0003-2328-6761, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: http://orcid.org/0000-0002-7267-1351, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
³Kosygin Russian State University (Technology. Design. Art), 117997, Moscow, Russia
ORCID: http://orcid.org/0000-0002-7267-1351, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
⁴Sterlitamak branch of the Bashkir State University, 453103, Sterlitamak, Russia
ORCID: http://orcid.org/0000-0003-2808-4827, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
⁵Atyrau Oil and Gas University, 060027, Atyrau, Republic Kazakhstan
ORCID: http://orcid.org/0000-0002-2307-8463, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: http://orcid.org/0000-0001-5323-0916, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
The article shows the possibilities of using the plant polymer lignin as a source of aromatic hydrocarbons. The thermochemical processes of lignin processing are considered on the examples of pyrolysis, hydrogenation and oxidation. The results of the influence of transition metals on the processes of obtaining aromatic compounds are given on the example of the use of iron-containing catalysts.
KEYWORDS: lignin, pyrolysis, hydrogenation, hydrogenation, oxidation, aromatic hydrocarbons, iron oxide.
For citation: Karimov O.KH., Karimov E.KH., Teptereva G.A., Movsumzade E.M., Kolchina G.YU., Bukanova A.S., Kayrlieva F.B., Kharin S.V., Terskova A.P. PRODUCTION OF AROMATIC HYDROCARBONS FROM LIGNIN ON IRON-CONTAINING CATALYSTS. Oil & Gas Chemistry. 2022, no. 1-2, pp. 10–14.

УДК: 544.473
https://doi.org/10.24412/2310-8266-2022-1-2-15-18
DISCUSSION PROBLEMS OF INITIATED CATALYSIS (P. 15-18)
Talyshinskiy R.M., Budnyak A.D., Bedenko S.P., Tretyakov V.F.
A.V. Topchiev Institute of Petrochemical Synthesis of the RAS, 119991, Moscow, Russia
ORCID: https://orcid.org/0000-0003-3178-6440, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-5536-0447, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0001-8926-0818, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
The history of the development of the classical understanding of catalysis is considered and the development of initiated catalysis is planned. The principal difference between the inductor and the initiator in catalysis was noted. The catalyst system is generally proposed to be represented as a wave thermocatalytic resonator of the first or second kind.
KEYWORDS: catalysis, resonance, inductor, initiator.
For citation: Talyshinskiy R.M., Budnyak A.D., Bedenko S.P., Tretyakov V.F. DISCUSSION PROBLEMS OF INITIATED CATALYSIS. Oil & Gas Chemistry. 2022, no. 1-2, pp. 15–18.
Acknowledgments: The work was carried out in accordance with the State Task of the IPS RAS.

CHEMICAL TECHNOLOGIES AND PRODUCTS

УДК 665.625.3-403
https://doi.org/10.24412/2310-8266-2022-1-2-19-22
PRODUCTION OF SYNTHETIC LIQUID FUELS IN THE PREPARATION OF NATURAL GAS FOR TRANSPORT (P. 19-22)
Syrovatka V.A.¹, Golubeva I.A.²,. Yasyan YU.P¹, Kolesnikov A.G.¹, Litvinova T.A.¹, Syrovatka A.V.¹
¹Kuban State Technological University, 350072, Krasnodar, Russia
ORCID: https://orcid.org/0000-0002-7704-3215, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-5644-5389, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-9401-7676, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-7551-0289, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-8261-8220, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
²Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia
ORCID: https://orcid.org/0000-0002-4879-1214, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
The possibility of implementing the scientific proposal of the authors - the utilization of low-pressure gas with the use of effective available technologies (EDT) to increase economic efficiency and rational use of low-pressure gas at the gas treatment plant for transport (GTU) is considered. Recycled low-pressure gas that is flared can become a raw material base for the production of fuel gas and stable condensate. The calculations carried out by the authors showed that this makes it possible to additionally obtain gaseous hydrocarbons in an amount of up to 700,000 m3/year and liquid hydrocarbons in an amount of up to 500 t/year.
KEYWORDS: gas preparation for transportation, rational use of natural resources, effective available technologies, utilization of low-pressure gases.
For citation: Syrovatka V.A., Golubeva I.A., Yasyan YU.P., Kolesnikov A.G., Litvinova T.A., Syrovatka A.V. PRODUCTION OF SYNTHETIC LIQUID FUELS IN THE PREPARATION OF NATURAL GAS FOR TRANSPORT. Oil & Gas Chemistry. 2022, no. 1-2, pp. 19–22.

УДК 661.721.43
https://doi.org/10.24412/2310-8266-2022-1-2-23-29
EXERGETIC ANALYSIS OF COMBINED METHANOL-AMMONIA-UREA PRODUCTION SCHEMES BASED ON PURGE GAS UTILIZATION (P. 23-29)
Zavolokin K.A., Sosna M.KH., Sokolinskiy YU.A.
Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia
ORCID: https://orcid.org/0000-0001-5551-5835, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0001-9609-1055, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
Utilization of purge gases at large-scale methanol production consists in burning them in a natural gas conversion furnace, which is an effective, but not the best, method from the point of view of exergy. The exergy potential of the purge gases makes it possible to consider more efficient methods. The reaction components in the composition of the purge gases open up the possibility of obtaining additional synthetic products of the first and second order (CH3OH and NH3), and the presence of excess CO2 makes it possible to organize more complicated complex production with the production of a third order product – carbamide (urea). The exergy analysis of the methods of utilization of purge gases considered in this article made it possible to evaluate the thermodynamic perfection of fundamentally different approaches to the production of ammonia (second-order product) and determined the vector of further study of the combined production of methanol-ammonia-carbamide.
KEYWORDS: methanol, syngas, purge gases, ammonia, Tandem recuperative reforming, methanation, exergy analysis, urea, methanol-ammonia-carbamide.
For citation: Zavolokin K.A., Sosna M.KH., Sokolinskiy YU.A. EXERGETIC ANALYSIS OF COMBINED METHANOL-AMMONIA-UREA PRODUCTION SCHEMES BASED ON PURGE GAS UTILIZATION. Oil & Gas Chemistry. 2022, no. 1-2, pp. 23–29.

УДК 665.613
https://doi.org/10.24412/2310-8266-2022-1-2-30-35
CALCULATIONS AND DETERMINATION OF THE PARAMETERS OF THE COMPONENTS OF NAPHTHALANPETROLEUM AND THE ESTABLISHMENT OF THEIR STATE AND SUSPECTIVE ACTIVITIES (P. 30-35)
Kolchina G.YU.¹, Bakhtina, A.YU.², Movsumzade M.M.³, Loginova M.E.²
¹Sterlitamak branch of the Bashkir State University,
453103, Sterlitamak, Russia
ORCID: http://orcid.org/0000-0003-2808-4827, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
²Ufa State Petroleum Technological University, 450062, Ufa, Russia
E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: http://orcid.org/0000-0002-7267-1351, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: http://orcid.org/0000-0001-7077-8705, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
³University of Amsterdam (UvA), Amsterdam, Netherlands
ABSTRACT
The paper presents the results of studies of the indices of reactivity and physiological activity of biomarkers of naphtalan oil using the hybrid density functional method in the 6-311G+(d,p) approximation. Biomarker molecules have a tetranuclear cyclopentanoperhydrophenant hrene system and are characterized by a three-dimensional spatial configuration. The relationship between the biological activity of triterpenes and their values of ionization potentials and electron affinity has been revealed. The studied biomarkers are similar in geometric and energy parameters to betulin derivatives and may exhibit biological activity.
KEYWORDS: biomarkers, Naphthalan petroleum, chemical structure, cholestans, hopanes.
For citation: Kolchina G.YU., Bakhtina A.YU., Movsumzade М.M., Loginova M.E. CALCULATIONS AND DETERMINATION OF THE PARAMETERS OF THE COMPONENTS OF NAPHTHALAN PETROLEUMAND THE ESTABLISHMENT OF THEIR STATE AND SUSPECTIVE ACTIVITIES. Oil & Gas Chemistry. 2022, no. 1-2, pp. 30–35.
Acknowledgments: The reported study was funded by RFBR according to the research project No 19-29-07471 mk.

УДК 665.7.038.64
https://doi.org/10.24412/2310-8266-2022-1-2-36-41
DYNAMIC RESEARCH METHODS TO ESTIMATE THE EFFICIENCY OF WAX INHIBITORS (P. 36-41)
Luzhetskiy A.V.¹, Nugaev S.T.¹, Urazaliev R.KH.¹, Veselkov A.V.²
¹Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia
ORCID: http://orcid.org/0000-0002-0145-3509, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: http://orcid.org/0000-0001-5046-416X, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: http://orcid.org/0000-0002-6516-7114, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
²DIUS-LAB LLC, 121205, Moscow, Russia
ABSTRACT
This paper proposes a method for assessing the effectiveness of wax inhibitors on a new installation of the Flow Loop type and carries out its experimental verification. This installation differs from similar ones in the balance between geometric characteristics, sample volume and test time. As a result of the research, the effectiveness of the wax inhibitor at various concentrations has been calculated.
KEYWORDS: wax deposition, wax inhibitors, pipelines, Flow Loop.
For citation: Luzhetskiy A.V., Nugaev S.T., Urazaliev R.KH., Veselkov A.V. DYNAMIC RESEARCH METHODS TO ESTIMATE THE EFFICIENCY OF WAX INHIBITORS. Oil & Gas Chemistry. 2022, no. 1-2, pp. 36–41.

УДК 661.961.99
https://doi.org/10.24412/2310-8266-2022-1-2-42-45
PRODUCTION OF HYDROGEN AND SULFUR BY THERMAL DECOMPOSITION OF HYDROGEN SULFIDE (P. 42-45)
Ponomareva M.A., Sosna M.KН., Sokolinsky YU.A.
Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia
ORCID: https://orcid.org/0000-0002-7509-000X, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0001-9609-1055, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
Hydrogen sulfide is a toxic gas naturally occurring and by-product of oil and gas refining processes. Nowadays mostly utilized by Claus industrial process, however the hydrogen from hydrogen sulfide converts into water, but production of two valuable commodities such as hydrogen and elementary sulfur instead would be more interesting. The article describes thermodynamic characteristics of the hydrogen sulfide thermal decomposition into hydrogen and sulfur.
KEYWORDS: hydrogen production, hydrogen sulfide decomposition, hydrogen sulfide dissociation, hydrogen sulfide utilization.
For citation: Ponomareva M.A., Sosna M.KН., Sokolinsky YU.A. PRODUCTION OF HYDROGEN AND SULFUR BY THERMAL DECOMPOSITION OF HYDROGEN SULFIDE.
Oil & Gas Chemistry. 2022, no. 1-2, pp. 42–45.

УДК 620.192
https://doi.org/10.24412/2310-8266-2022-1-2-46-52
FORECASTING THE RESIDUAL LIFE OF STEAM PIPES USING NON-DESTRUCTIVE CONTROL METHODS (P. 46-52)
Khasanov I.I., Popov D.M.
Ufa State Petroleum Technological University, 450062, Ufa, Russia
ORCID: http://orcid.org/0000-0002-3422-1237, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
Currently, there are a number of problems related to the operation of heat exchangers. In the process of operation of a shell-and-tube heat exchanger, different kinds of defects are formed in the tubes of the tube bundle, which lead to a fire hazard due to depressurization of the joints and the formation of leaks. This is why it is important to develop methods for diagnosing such technical devices to determine the technical condition and residual metal resource of heat exchange tubes in tube bundles. We developed a prototype of the device, the performance of which was examined on samples of steam pipes of pyrolysis furnaces. The results obtained by the device identify the deviations in the inner surface of the pipes and determine the maximum time of their life operation. The next step of the study is to reduce the design dimensions of the model for the possibility of its application directly on the tubes of the tube bundle located in the heat exchanger.
KEYWORDS: shell-and-tube heat exchanger, tube bundle, corrosion, defects.
For citation: Khasanov I.I., Popov D.M. FORECASTING THE RESIDUAL LIFE OF STEAM PIPES USING NON-DESTRUCTIVE CONTROL METHODS. Oil & Gas Chemistry. 2022, no. 1-2, pp. 46–52.

УДК 66.074.1; 66.078.2
https://doi.org/10.24412/2310-8266-2022-1-2-53-59
MODERNIZATION OF INTEGRATED GAS TREATMENT AND BOOSTER COMPRESSOR STATION OF ORENBURG OIL AND GAS CONDENSATE FIELD TO RECEPTION AND TREATMENT OF ASSOCIATED PETROLEUM GAS (P. 53-59)
Zhagfarov F.G., Grigoryeva N.A., Sribnaya T.YU.
Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia
ORCID: https://orcid.org/0000-0002-7344-015Х, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0003-2619-2541, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0003-1983-9597, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
The article deals with the issues of field preparation of natural and associated gases by the method of low-temperature separation at a complex gas treatment unit, as well as options for compressing raw materials at a booster compressor station. Modernized schemes of the process of low-temperature separation of hydrocarbon raw materials and the system for compressing the treated gas of the Orenburg oil and gas condensate field are presented, taking into account the utilization of associated petroleum gas. The main criteria for evaluating the effectiveness of the adopted technical solutions are given.
KEYWORDS: associated petroleum gas, complex gas treatment plant, low-temperature separation, three-phase separator, booster compressor station, gas compressor unit.
For citation: Zhagfarov F.G., Grigoryeva N.A., Sribnaya T.YU. MODERNIZATION OF INTEGRATED GAS TREATMENT AND BOOSTER
COMPRESSOR STATION OF ORENBURG OIL AND GAS CONDENSATE FIELD TO RECEPTION AND TREATMENT OF ASSOCIATED PETROLEUM GAS. Oil & Gas Chemistry. 2022, no. 1-2, pp. 53–59.

HYDRATE FORMATION IN GAS PRODUCTION SYSTEMS

УДК 544.032.7
https://doi.org/10.24412/2310-8266-2022-1-2-60-67
FEATURES OF METHANOL APPLICATION FOR HYDRATE CONTROL IN THE WELLBORES OF THE CHAYANDINSKOYE OIL GAS CONDENSATE FIELD (P. 60-67)
Istomin V.A.¹,², Izyumchenko D.V.¹, Krapivin V.B.¹, Troynikova A.A.¹, Kwon V.G.¹, Sergeeva D.V.¹,²
¹Gazprom VNIIGAZ LLC, 142717, Village Razvilka, Moscow region, Russia
ORCID: https://orcid.org/0000-0001-6190-4183, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.,
E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0003-3422-4048, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0003-3327-3366, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-7873-1941, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-3723-9408, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
²Skolkovo Institute of Science and Technology (Skoltech), 121205, Moscow, Russia
ORCID: https://orcid.org/0000-0001-6190-4183, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ORCID: https://orcid.org/0000-0002-3723-9408, E-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.
ABSTRACT
The features of the methanol and its aqueous solution application for hydrate control in the wellbores of the Chayandinskoye oil and gas condensate field are analyzed. The model compositions of formation gas and mineralized formation water of the field are given. Calculations have been carried out and some empirical correlations have been proposed to determine the moisture and methanol content of formation gas of average composition, as well as the effect of methanol and formation water on the hydrate formation conditions. Calculations of the specific consumption of aqueous methanol solutions for the prevention of hydrate formation in wellbores are presented. It is noted that in the absence of formation water in well production, the required specific methanol rate (which ensures the prevention of hydrates in the wellbore) is determined not by the gas temperature at the wellhead, but by a higher temperature (about plus 2 °C). During subsequent decrease in gas temperature (including gas throttling at wellhead and reducing the temperature in gas gathering pipeline) additional methanol rate not required. This partly unusual effect is associated with the low moisture content of the formation gas and the intensive condensation of methanol vapors from the gas phase as the gas temperature decreases. The possibility of hydrate self-inhibition of wellbores by the recovered high salinity formation water is analyzed. It is shown that in most cases the incoming reservoir water will not be enough to inhibition of the hydrate formation in wellbores. An engineering method has been developed for calculating the specific consumption of a water-methanol solution taking into account of mineralized formation water recovered by the wells. The application of methanol solutions with a concentration of 75 - 80 wt. % (depending on formation water ion compositionand its salinity). eliminates the risks of scale (halite precipitation) due to mixing methanol with formation water.
KEYWORDS: Chayandinskoye oil and gas condensate field, gas hydrate, mineralized formation water, methanol, water methanol solution.
For citation: Istomin V.A., Izyumchenko D.V., Krapivin V.B., Troynikova A.A., Kwon V.G., Sergeeva D.V. FEATURES OF METHANOL APPLICATION FOR HYDRATE CONTROL IN THE WELLBORES OF THE CHAYANDINSKOYE OIL GAS CONDENSATE FIELD. Oil & Gas Chemistry. 2022, no. 1-2, pp. 60–67.