ISSN 1999-6934

Scientific-technical journal

EQUIPMENT AND TECHNOLOGIES

FOR OIL AND GAS COMPLEX

                                                                                                published since 2001

October 2020                              5(119)                        6 issues per year

 

CONTENS

 

MACHINERY AND EQUIPMENT

 

Bogomolov R.M., Serikov D.Yu., Boreiko D.A. Analysis of constructional specific features of double-cone drill bits (p. 5‑9)

 

Yushin E.S. Development trends in hydraulic drive systems for sucker-rod bottom-hole pumps used for oil production (p. 10‑16)

 

Yasashin V.A., Chernova T.A., Prudnikov D.I. Assessment of the quality characteristics of units of an electrical submersible centrifugal pump and ways to increase its efficiency (p. 17‑24)

 

Serikov D.Yu. Improvement of cone-type reamer-calibrator (p. 25‑28)

 

STANDARDIZATION AND QUALITY MANAGEMENT

 

Kershenbaum V.Ya., Guseva T.A., Panteleev A.S., Shchipakov I.A. Algorithm of the discourse between a customer and suppliers as a basis of technical audit methods of product manufacturers for oil and gas complex on the example of valves manufacturers (p. 29‑34)

 

DEVELOPMENT OF OIL AND GAS FIELDS

 

Dikamov D.V., Shulyatikov V.I., Prikhodchenko A.D., Ragimov T.T., Yushin E.S. The technology of wellhead separation of sand-liquid mixtures at the Urengoi oil and gas condensate field using a sand separator as a part of a gas well piping (p. 35‑41)

 

Lobanov V.I., Safronov M.Yu., Kopylov A.I., Ragimov T.T. Experience of implementing a gas well operation technology using concentric lift strings with a steel polymer lift strings (p. 42‑46)

 

Grishagin A.V., Kashaev D.V., Gladunov O.V. Development of project activities by expanding the subject of design (p. 47‑54)

 

Dorfman M.B., Krivopolenov N.V., Sentemov A.A. Modeling of matrix acidizing on the bottom-hole zone by the method of invasive percolation (p. 55‑58)

 

Shekhovtsova E.V., Romanko V.V., Kim S.L. Analysis of the results of the use of various-strength magnetic inductors when operating a complicated wells stock (p. 59‑64)

 

PIPELINE TRANSPORT

 

Maklakov S.N., Saranchuk R.V., Shirobokov V.A., Sobyanin A.K. Change of the technological scheme for the light petroleum products transshipment in order to increase the cargo turnover of the Base for the storage and sale of fuels and lubricants, methanol and chemicals of LLC "Gazprom dobycha Urengoy" (p. 65‑69)

 

Glushkov S.V., Gaysin E.Sh., Frolov Yu.A., Sharafiev R.G., Yanbukhtin A.R. An approach to the assessment of a pipeline curvature using optical reflectometry (p. 70‑75)

 

Aginey R.V., Isupova E.V. Experimental study of equivalent electric resistance value of devices for galvanic separation of adjacent systems in a current circuit (p. 76‑80)

 

 

Information on the articles

 

UDC 622.24.051.552          DOI: 10.33285/1999-6934-2020-5(119)-5-9

 

ANALYSIS OF CONSTRUCTIONAL SPECIFIC FEATURES
OF DOUBLE-CONE DRILL BITS (p. 5)

 

Rodion Mikhailovich Bogomolov, Dr. of tech sci., Professor

 

Samara State Technical University

244, Molodogvardeiskaya str., Samara, 443100, Russian Federation

 

Dmitry Yurievich Serikov, Dr. of tech sci., associate professor

 

National University of Oil and Gas "Gubkin University"

65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: serrico@rambler.ru

 

Dmitry Andreevich Boreiko, Cand. of tech sci., associate professor

 

Ukhta State Technical University

13, Pervomaiskaya str., Ukhta, 169300, Komi Republic, Russian Federation

 

Constructional features of double-cone drill bits are analyzed. The most interesting patented constructional features of double-cone drill bits are described. The advantages and disadvantages of a two-cone assembly of a drilling tool are established. The expediency of further research of the work and constructional features of double-cone drill bits has been substantiated, due to the fact that it is of great scientific and practical interest.

 

Keywords: double-cone drill bit; water jet nozzle; drilling mud; mechanical speed of drilling; drill-bit teeth cutting structures.

 

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UDC 622.276.53.054.22          DOI: 10.33285/1999-6934-2020-5(119)-10-16

 

DEVELOPMENT TRENDS IN HYDRAULIC DRIVE SYSTEMS
FOR SUCKER-ROD BOTTOM-HOLE PUMPS USED FOR OIL PRODUCTION (p. 10)

 

Evgeniy Sergeevich Yushin, Cand. of tech. sci., associate professor, researcher of the resource sector of Christmas tree and piping accessories Laboratory of special pipes and joints of CSTC for the development of pipe products

 

Russian Research Institute for Natural Gases and Gas Technologies (LLC "Gazprom VNIIGAZ")

15, bld. 1, Proektiruemy proezd No 5537, p. Razvilka, 142717, s/p Razvilkovskoe, Leninsky district, Moscow region, Russian Federation,

e-mail: EvgeniyYushin@mail.ru

 

The designs of domestic and foreign hydraulic drive systems for sucker rod bottom-hole pumps for oil production are analyzed, the advantages of hydraulic systems over mechanized drives are determined, and ways of their improvement are proposed. The classification of the drives hydraulic systems is presented and their main technical characteristics as well as balancing techniques are noted.

 

Keywords: hydraulic drive of the sucker-rod pump; oil production; hydraulic drive system; inertial balancing; specific energy consumption; mounting ability; metal consumption.

 

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UDC 622.276.53.054.23:621.67-83          DOI: 10.33285/1999-6934-2020-5(119)-17-24

 

ASSESSMENT OF THE QUALITY CHARACTERISTICS OF UNITS
OF AN ELECTRICAL SUBMERSIBLE CENTRIFUGAL PUMP AND
WAYS TO INCREASE ITS EFFICIENCY (p. 17)

 

Vitaly Anatolievich Yasashin, Dr. of tech. sci, Professor,

Tatyana Aleksandrovna Chernova, Cand. of tech. sci., associate professor,

Dmitry Igorevich Prudnikov, student

 

National University of Oil and Gas "Gubkin University"

65, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: yasashin@rambler.ru

 

Russian Federation oil production is currently characterized by an increase in the role of using electrical submersible centrifugal pumps (ESP) in comparison with sucker-rod and screw pumps. The present paper addresses the ESP unit design. The authors' have conducted an analysis of the Russian and foreign regulatory and technical documentation that allowed determination of the fundamental quality characteristics of the pump and development of the design of a test bench for certification testing purposes. The conducted analysis of ways of raising pumps operational characteristics has determined the possibility of laser treatment of the pumps working parts thus making it possible to decrease the hydraulic resistance and to increase the quality and efficiency of a ESP unit the whole.

 

Keywords: oil production; electrical submersible centrifugal pump; quality; standard; certification; laser processing; efficiency improvement.

 

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UDC 622.24.051.47          DOI: 10.33285/1999-6934-2020-5(119)-25-28

 

IMPROVEMENT OF CONE-TYPE REAMER-CALIBRATOR (p. 25)

 

Dmitry Yurievich Serikov, Dr. of tech. sci., associate professor

 

National University of Oil and Gas "Gubkin University"

65, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: serrico@rambler.ru

 

The results of work aimed at improving the design of the cone-type reamer-calibrator are presented. Based on an analysis of the reasons that cause narrowing of drilled wells during one bit trip as well as the main design flaws of a serial drilling tool that contribute to premature wear of reamers-calibrators during their operation, a special design of this type of drilling tool was developed. The proposed design of the cone-type reamer-calibrator provides, on the one hand, an increase of its operational reliability and efficiency and, on the other hand, simplification of its design as compared with the existing serial counterparts, thereby reducing the cost of the tool manufacture. The practical use of these designs of the cone-type reamer-calibrator will make it possible to significantly increase the efficiency of wells drilling due to: increased operational life-time of the cone bearings, greater wear resistance of the roller-cutter drill bits, more reliable body designs that guarantee trouble-free operation of the tool.

 

Keywords: roller-cone reamer-calibrator; asymmetric drill-bit cutting structures; interchangeable cones; flushing unit.

 

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UDC 621.646.1          DOI: 10.33285/1999-6934-2020-5(119)-29-34

 

ALGORITHM OF THE DISCOURSE BETWEEN A CUSTOMER AND SUPPLIERS
AS A BASIS OF TECHNICAL AUDIT METHODS OF PRODUCT MANUFACTURERS
FOR OIL AND GAS COMPLEX ON THE EXAMPLE OF VALVES MANUFACTURERS
(p. 29)

 

Vsevolod Yakovlevich Kershenbaum, Dr. of tech. sci., Professor, Head of the Department,

Tatiana Alekseevna Guseva, Cand. of tech. sci., associate professor,

Alexander Sergeevich Panteleev, Cand. of tech. sci., associate professor,

Ivan Andreevich Shchipakov, post-graduate student

 

National University of Oil and Gas "Gubkin University"

65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: tkaning@yandex.ru, tguseva14@yandex.ru, aleksandr.panteleew@yandex.ru, schipakovia@mail.ru

 

The paper discusses the final stages of the developed methodology for assessing and selecting Russian suppliers of equipment and technical devices for oil and gas companies, including different types of valves. The discourse algorithm between a customer and a supplier is presented, the result of which is the questionnaire for conducting a technical audit of the production capacities of domestic manufacturers. The paper demonstrates the principles of drawing up questionnaires for the audit, the rules for the formation of special and general questions, the formula for calculating the resulting indicator of the supplier's success, the high value of which allows making a conclusion about the possibility of concluding a contract with this manufacturer.

 

Keywords: valves; pipeline valves; standards; technical audit; supplier assessment; production assessment.

 

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UDC 622.279          DOI: 10.33285/1999-6934-2020-5(119)-35-41

 

THE TECHNOLOGY OF WELLHEAD SEPARATION OF SAND-LIQUID MIXTURES
AT THE URENGOI OIL AND GAS CONDENSATE FIELD USING A SAND SEPARATOR
AS A PART OF A GAS WELL PIPING (p. 35)

 

Dmitry Vladimirovich Dikamov, Cand. of tech. sci., chief engineer the First Deputy-General Director,

Teymur Telmanovich Ragimov, Deputy-Chief of GKP-5 of the Urengoy gas field Department

 

LLC "Gazprom dobycha Urengoy"

8, Zheleznodorozhnaya str., Novy Urengoy, 629300, Yamalo-Nenets autonomous territory, Russian Federation,

e-mail: d.v.dikamov@gd-urengoy.gazprom.ru, t.t.ragimov@gd-urengoy.gazprom.ru

 

Alexander Dmitrievich Prikhodchenko, Deputy-General Director (gas equipment)

 

CJSC "Safe technologies"

15D, Krasnogvardeisky pereulok, St. Petersburg, 197342, Russian Federation,

e-mail: prihodchenko.ad@zaobt.ru

 

Vladimir Igorevich Shulyatikov, Cand. of tech. sci.,

Evgeny Sergeevich Yushin, Cand. of tech. sci., associate professor, scientific researcher of the Sector of the resource of gushing and pipeline accessories of the Laboratory of special pipes and connections of the Technical Center of pipe production

 

LLC "Gazprom VNIIGAZ"

15, bld. 1, Proektiruemy proezd No 5537, p. Razvilka, 142717, s/p Razvilkovskoe, Leninsky district, Moscow region, Russian Federation,

e-mail: v_sh38@mail.ru, EvgeniyYushin@mail.ru

 

The paper deals with the problems of well 514 operation of the Senomanian reservoir of the Urengoy oil and gas-condensate field at the final stage of its development, which consists in the intensive removal of the associated sand-liquid mixture with the gas phase. To provide field separation of natural gas from liquids and solids, a technically developed, factory manufactured wellhead device is proposed. The technology of wellhead separation of sand-liquid mixtures is proposed and considered, and the results of gas-dynamic studies showing the effectiveness of the wellhead chipper use in the zone of ambient temperatures up to minus 10 C are presented. It is also noted that a wellhead separation efficiency can be ensured in harsh climatic conditions by supplying methanol or additional thermal insulation of the equipment.

 

Keywords: sand removal; wellhead separation technology; sand-liquid mixture; wellhead sand separator; gas well; wellhead chipper; technological complex; moisture content; gas-dynamic studies; thermobaric parameters; hydraulic losses; hydrate formation; ice formation.

 

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UDC 622.279.346          DOI: 10.33285/1999-6934-2020-5(119)-42-46

 

EXPERIENCE OF IMPLEMENTING A GAS WELL OPERATION TECHNOLOGY
USING CONCENTRIC LIFT STRINGS WITH A STEEL POLYMER LIFT STRINGS (p. 42)

 

Vadim Igorevich Lobanov, Deputy-Head of the Department responsible for gas production and preparation for gas transportation,

Mikhail Yurievich Safronov, Deputy-Head of the Center for geology and field development,

Andrey Innokentievich Kopylov, Head of the Department for technological control of wells repair,

Teymur Telmanovich Ragimov, Deputy-Head of the shop GKP-5 UGPU

 

LLC "Gazprom dobycha Urengoy"

8, Zheleznodorozhnaya str., Novy Urengoy, 629300, Yamalo-Nenets autonomous territory, Russian Federation,

e-mail: t.t.ragimov@gd-urengoy.gazprom.ru

 

In order to effectively develop the huge reserves of the Urengoy field, at the initial stage of their development, a technical solution was implemented for differentiated opening of the reservoir with a cluster of 56 wells equipped with production columns and large-diameter tubing. It allowed operation of wells with optimal flow rates and maintain gas production at a high level. Large diameter tubing, which provided wells high flow rates at the initial stage of field development, are a factor that complicates gas production at the late stage of operation. The decrease in reservoir pressure and production levels creates conditions for the accumulation of condensation water in the perforation interval and the well bore, as well as the destruction of the bottom-hole zone of the formation. These complications are the reason for increasing pressure losses and reducing the working flow rates of wells less than the minimum required ones until they are stopped. The method of wells operation using concentric lift strings with a control complex refers to intelligent solutions for the operating mode optimization of both individual wells and entire clusters in conditions of their self-setting, based on the use of modern technologies. The paper describes a set of technical and technological solutions for equipping the well No. 514 of the Urengoy oil and gas-condensate complex with a concentric steel-polymer lift string without a well killing and the experience of its subsequent operation. It is shown that the technology of a well operation equipped with an additional lift string without a well killing provides stable gas production while maintaining the maximum productive characteristics of the reservoir at the late stage of a field development.

 

Keywords: minimum required speed; "self-killing" of a well; concentric lift strings; central lift string; inter-circular space; descent of cable-line communication structures without a well killing; technological complex for monitoring and controlling a well operation mode.

 

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UDC 622.276          DOI: 10.33285/1999-6934-2020-5(119)-47-54

 

DEVELOPMENT OF PROJECT ACTIVITIES
BY EXPANDING THE SUBJECT OF DESIGN (p. 47)

 

Alexander Vladimirovich Grishagin, chief technological engineer of the Department of Technological Designing,

Denis Vyacheslavovich Kashaev, chief engineer

 

LLC "SamaraNIPIneft"

18, Vilonovskaya str., Samara, 443010, Samara region, Russian Federation,

e-mail: GrishaginAV@samnipi.rosneft.ru

 

Oleg Vladimirovich Gladunov, Deputy-General Director on perspective planning and development of production

 

JSC "Samaraneftegaz"

50, Volzhsky prosp., Samara, 443071, Samara region, Russian Federation,

e-mail: sng@samng.ru

 

A scheme of a systematic approach to project activities in general is proposed. A generalized classification of the design system for any oil and gas company with the planned activities for the development and construction of oil and gas fields is presented. A conditional grouping of infrastructure facilities according to the design directions with account of the facilities structural characteristics and the investment process type in construction investment process is carried out. The projected activity of the design and research sector of the institute in terms of diverse and specific objects of oil and gas production companies, provided by design, from the point of view of the design topics expansion, since 2000 up to now, taking into account the distribution of work for integrated, conceptual, non-standard, hydrogeological and standard design is analyzed. A diagram of the design work evolution was built based on the design experience of development objects, both classical and non-standard and significant for the designers competencies development.

 

Keywords: development of design activities; expansion of design topics.

 

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UDC 622.276.63          DOI: 10.33285/1999-6934-2020-5(119)-55-58

 

MODELING OF MATRIX ACIDIZING ON THE BOTTOM-HOLE ZONE
BY THE METHOD OF INVASIVE PERCOLATION (p. 55)

 

Mikhail Borisovich Dorfman, Cand. of tech. sci., associate professor,

Nikita Vladimirovich Krivopolenov, student,

Andrey Alekseevich Sentemov, post-graduate student

 

Northern (Arctic) Federal University named after M.V. Lomonosov, the Department of Wells Drilling, Oil and Gas Wells Development

17, Severnaya Dvina naberezhnaya, Arkhangelsk, 163002, Russian Federation,

e-mail: m.dorfman@narfu.ru, krivopolenov.n@yandex.ru, sentemov.a.a@yandex.ru

 

The article describes a method for modeling matrix acidizing of the bottom-hole zone. The theory of invasive percolation is used to describe the movement of acid in the reservoir and its interaction with carbonate formation. Hydrodynamic model allows taking into account the heterogeneity of reservoir properties in the bottom-hole zone. The model takes into account the flow of acid into the zones with the highest permeability. Firstly, a hydrodynamic model was built in the tNavigator program. An invasive percolation model was created by Matlab program. The applied approach allows taking into account the fractal nature of acid solution penetration and the channels forming. The hydrodynamic model is based on the geological data of the West-Sikhoreyskoye field. The simulation results help to obtain data on the flow rates of liquid and oil, the duration of the technological effect. The simulation results are comparable with the results of hydrochloric acid treatment of well No. 70 of this field.

 

Keywords: hydrodynamic model; matrix acidizing; invasive percolation; fractals.

 

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UDC 662.276.72          DOI: 10.33285/1999-6934-2020-5(119)-59-64

 

ANALYSIS OF THE RESULTS OF THE USE
OF VARIOUS-STRENGTH MAGNETIC INDUCTORS
WHEN OPERATING A COMPLICATED WELLS STOCK (p. 59)

 

Elizaveta Vasilievna Shekhovtsova, external doctorate student

 

Udmurt State University

1, bld. 7, Universitetskay str., Izhevsk, 426034, Udmurt Republic, Russian Federation

 

Vasily Vasilievich Romanko, external doctorate student

 

National University of Oil and Gas "Gubkin University"

65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation

 

Stanislav Leonidovich Kim, Cand. of phys.-math. sci., senior researcher

 

Udmurt Federal Research Center of the Ural section of the Russian Academy of Sciences, Institute of Mechanics

34, Tatiana Baramzina str., Izhevsk, 426067, Udmurt Republic, Russian Federation,

e-mail: lgkim@ya.ru

 

Increased content of high molecular weight paraffinic hydrocarbons in oil degrades its quality and creates problems during its extraction and transportation. The data on oils composition show that high molecular weight paraffinic hydrocarbons are found in all oils, but their content varies within wide limits. The well-known and most actively used control methods are chemical, physical, thermal, mechanical and microbiological. This paper provides a rationale for the application of paraffinic oil processing by permanent magnetic fields strengths. Oil samples from the following fields: Begeshkinskoye (well 1392), Kotovskoye (well 335), Elnikovskoye (well 3599) of the of Udmurt Republic were selected as objects of study.

 

Keywords: field; asphalt-resin-paraffin deposits; magnetic processing activator; permanent magnets; inter-cleaning period; complicating factors.

 

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UDC 622.692.5          DOI: 10.33285/1999-6934-2020-5(119)-65-69

 

CHANGE OF THE TECHNOLOGICAL SCHEME
FOR THE LIGHT PETROLEUM PRODUCTS TRANSSHIPMENT
IN ORDER TO INCREASE THE CARGO TURNOVER OF THE BASE
FOR THE STORAGE AND SALE OF FUELS AND LUBRICANTS, METHANOL
AND CHEMICALS OF LLC "GAZPROM DOBYCHA URENGOY" (p. 65)

 

Sergey Nikolaevich Maklakov, Deputy-General Director (General problems),

Roman Viktorovich Saranchuk, Head of the affiliate of the Managerial Department of Procurement and Logistics,

Vladimir Aleksandrovich Shirobokov, chief engineer of the Managerial Department of Procurement and Logistics,

Alexander Konstantinovich Sobyanin, Head of Production-Dispatching Department of the Managerial Department of Procurement and Logistics

 

LLC "Gazprom dobycha Urengoy"

8, Zheleznodorozhnaya str., Novy-Urengoy, 629307, Yamalo-Nenets autonomous territory, Russian Federation,

e-mail: s.n.maklakov@gd-urengoy.gazprom.ru, r.v.saranchuk@gd-urengoy.gazprom.ru,
v.a.shirobokov@gd-urengoy.gazprom.ru, a.k.sobyanin@gd-urengoy.gazprom.ru

 

The paper considers the problems of technical-economic feasibility of changing the technological scheme for transshipment of a promising product light gas condensate distillate (LGCD) in order to increase the freight turnover of export products, as well as to create a reserve for maintaining the growing trend of LGCD production.

 

Keywords: production volumes; decrease in demand for KGS; increased interest in LGCD; low throughput of technological pipelines; insufficient volume of the tank farm; mirror change of technological chains; provision of vacated facilities clearing; change of transshipment scheme; reconnecting of the pipeline; increase of freiht turnover.

 

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UDC 622.691.4          DOI: 10.33285/1999-6934-2020-5(119)-70-75

 

AN APPROACH TO THE ASSESSMENT OF A PIPELINE CURVATURE
USING OPTICAL REFLECTOMETRY (p. 70)

 

Semen Vladimirovich Glushkov, bachelor degree,

Emil Shamilevich Gaysin, lecturer,

Yury Afanasievich Frolov, Dr. of tech. sci., Professor,

Robert Garafievich Sharafiev, Dr. of tech. sci., Professor

 

Ufa State Petroleum Technological University

1, Kosmonavtov str., Ufa, 450064, Republic of Bashkortostan, Russian Federation,

e-mail: gaysin.emil@mail.ru

 

Aidar Rafaelovich Yanbukhtin, masters student

 

National University of Oil and Gas "Gubkin University", Department of Standardization, Certification and Control of Quality of Oil and Gas Equipment Manufacture

65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: tkaning@yandex.ru

 

One of the reasons for reducing the operational reliability of a pipeline is the loss of its stability due to the influence of climatic factors. However, at present, the stability of the linear part of a main pipeline is not monitored in real time.

Thus, the development of methods that can provide monitoring of the stability of a main pipeline linear part in real time is an urgent problem.

The objectives of the study are the selection of the equipment for the experiment, obtaining the empirical dependence of the change in the signal power on the curvature and length of the section as well as detecting its location.

In the course of a series of experiments with different values of the optical fiber curvature, it was found that using the proposed monitoring model (with the appropriate equipment), it is possible to evaluate the stability of main pipelines in real time over its entire length and in certain sections.

 

Keywords: optical reflectometry; stability; monitoring; trunk pipeline; curvature.

 

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UDC 620.193.013:620.97          DOI: 10.33285/1999-6934-2020-5(119)-76-80

 

EXPERIMENTAL STUDY OF EQUIVALENT ELECTRIC RESISTANCE VALUE
OF DEVICES FOR GALVANIC SEPARATION OF ADJACENT SYSTEMS
IN A CURRENT CIRCUIT (p. 76)

 

Ruslan Viktorovich Aginey, Dr. of tech. sci., Professor, Rector,

Ekaterina Vladimirovna Isupova, Cand. of tech. sci., associate professor of the Department "Design and Operation of trunk gas and oil pipelines"

 

Ukhta State Technical University

13, Pervomaiskaya str., Ukhta, 169300, Komi Republic, Russian Federation,

e-mail: eisupova@ugtu.net

 

The article presents the results of an experimental study of the effect of devices for galvanic separation of cathodic protection and protective grounding systems on the resistance value of the grounding circuit. It was found that the inclusion of a protective grounding of industrial-frequency alternate current of diode assembly, which is the main element of devices for galvanic separation of adjacent systems, the equivalent resistance of the electrical circuit depends on the strength of the flowing current. There was also concluded that a diode assembly of rectifier low-frequency diodes is characterized by a tendency for a two-fold linear increase in resistance with the frequency growth. Further prospects for the research and development of new technical solutions, which allow reducing the electrical resistance of the device for separating ground loops, have been determined.

 

Keywords: device for galvanic separation; electrochemical protection; protective grounding circuit; cathodic current shielding; equivalent electrical resistance.

 

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NATIONAL UNIVERSITY OF OIL AND GAS "GUBKIN UNIVERSITY"

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