Equipment and Technologies for Oil and Gas Complex

e-mail: ivanovskiyvn@yandex.ru, albert_sabirov@mail.ru, degovtsov.aleksey@yandex.ru, mr.aliev111@mail.ru, kuznetsovivl@mail.ru, orlova.ekaterina.9@yandex.ru

Oleg Vladimirovich Tretyаkov, General Director,

Igor Ivanovich Mazein, the First Deputy General Director – Chief engineer,

Sergey Vladimirovich Merkushev, Head of the Department of Oil and Gas Production Technology,

Denis Nikolaevich Krasnoborov, leading engineer of the Department of Oil Production,

Sergey Vasilievich Popov, Deputy Head of the Center of Oil and Gas Production-3

LLC "LUKOIL–PERM"

62, Lenin str., Perm, 614990, Perm region, Russian Federation,

e-mail: lp@lp.lukoil.com, denis.krasnoborov@lp.lukoil.com, Sergej.Vas.Popov@lp.lukoil.com

The paper presents the results of field trials (FT) of a newly-designed deep-well sucker-rod non-inserted pump with a discharge chamber at the fields of LLC "LUKOIL–PERM". The new pump was developed at the Department of Machinery and Equipment for Oil and Gas Industry of the National University of Oil and Gas "Gubkin University". The students of the above-said University actively participated in the simulation of the pump operation and in the development of drawings of the pump new design.

More than 56 % of the well stock of LLC "LUKOIL–PERM" is equipped with deep-well sucker-rod pumping units (DWSRPU), here by about 70 % of the wells are complicated by asphalt-resin-paraffin sediments, some wells also have small-diameter sidetracks that are operated by deep-well pumping units with a continuous cable rod. The presence of asphalt-resin-paraffin sediments and large rates of curvature and deviation from the vertical in wells with sidetracks of small diameter cause rods hanging and in case of the continuous cable rod, the descent of the rope and premature failure of the equipment.

The description of the principal diagram and the new design of the deep-well sucker-rod non-inserted pump with a discharge chamber, which provides the movement of the rods during the downward stroke, is given.

There presented the results of field trials of new sucker-rod pumps in three wells at the fields of LLC "LUKOIL–PERM". In addition, pump operation dynamometer chartь are given. Tests of deep-well sucker-rod pumps with a discharge chamber at the fields of LLC "LUKOIL– PERM" confirmed the efficiency and effectiveness of the proposed design.

Keywords: deep-well sucker-rod pump; discharge chamber; rod string; continuous cable rod; rods hanging-up.

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UDC 66.069.83 DOI: 10.33285/1999-6934-2020-2(116)-15-22

DEVELOPMENT OF A NOZZLE FOR INJECTION OF INHIBITORS OF CORROSION
AND HYDRATE FORMATION, EXTRACTABLE UNDER PRESSURE (p. 15)

Alexander Ivanovich Khodyrev, Dr. of tech. sci., Professor,

Vladimir Valentinovich Mulenko, Cand. of tech. sci., associate professor

National University of Oil and Gas "Gubkin University"

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

e-mail: aihod@mail.ru, vmulenko@mail.ru

In order to provide the reliable inhibitor protection of gas pipelines from corrosion and hydrate formation in the field, centrifugal nozzles spraying methanol or a corrosion inhibitor solution are used. When implementing any technology with an injection of an inhibitor, it is desirable to be able to remove the nozzle from the pipe for checkup, cleaning or replacement without stopping the pipeline and dropping the pressure. This problem was solved at the National University of Oil and Gas "Gubkin University". A special feature of the developed FS-160 nozzle is the ability to install and remove it from a gas pipeline under operating pressure up to 15 MPa, using the existing access means of Rohrback Cosasco Systems Company and the availability of more than twenty design options. The paper describes the device and operation of the nozzle and its components, the procedure of its installation and removal from the pipeline under pressure. The nozzle prototypes have successfully passed acceptance tests at LLC "Gazprom Dobycha Orenburg". The FS-160 nozzle is recommended for serial production.

Keywords: corrosion inhibitor; inhibition; hydrate formation; gas pipeline; nozzle; injection; liquid spraying; sprayer.

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UDC 622.276.5.05.001.41 DOI: 10.33285/1999-6934-2020-2(116)-23-26

TO THE QUESTION OF THE CHARACTERISTICS DEPENDENCE
OF VANE PUMPS STAGES ON THE TEST CONDITIONS (p. 23)

Temir Ruslanovich Dolov, Cand. of tech. sci., associate professor, Department of Machinery and Equipment of Oil and Gas Industry,

Yuriy Andreevich Donskoy, Cand. of tech. sci., associate professor, Department of Machinery and Equipment of Oil and Gas Industry,

Alexander Vladimirovich Ivanovsky, post-graduate student, Department of Machinery and Equipment of Oil and Gas Industry,

Ivan Vladimirovich Kuznetsov, engineer, Department of Machinery and Equipment of Oil and Gas Industry,

Ruslan Maratovich Shaykhulov, master’s student, Department of Machinery and Equipment of Oil and Gas Industry

National University of Oil and Gas "Gubkin University"

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

e-mail: dolovtemir@yandex.ru, don125@yandex.ru, alivan@yandex.ru, kuznetsovivl@mail.ru, ruslan.shajhulov96@mail.ru

The electric pumping units required for matching specific conditions of oil wells are selected based on the factory's complex characteristics. These characteristics are obtained as a result of pump sections testing on full-size benches, herewith, the size, weight, drive capacity and cost can be very significant. These stands require the use of standard pumping sections for testing, which are equipped with experimental innovative stages that require a lot of time and money.

The article presents the results of researches, which allow assertion that there exists the possibility of using budget small-sized benches for comparative tests of stages of electric-driven vane pumps. It is shown that the main performance indicators of stages obtained on full-scale and small-sized benches differ by 2…10 %. The conclusion is made about the prospects of using small-sized benches to reduce the time and cost of research and development work when creating innovative stages of vane pumps for oil production.

Keywords: electric pumping units; stage of a pump; bench for testing stages; characteristic of the pump.

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UDC 62-762:678.01 DOI: 10.33285/1999-6934-2020-2(116)-27-31

OIL SEAL USING SHAPE MEMORY MATERIALS FOR PUMPS
USED FOR PUMPING LIQUEFIED NATURAL GAS (p. 27)

Yuriy Sergeevich Dubinov, Cand. of tech. sci., associate professor of the Department of Physical Metallurgy and Non-Metal Materials,

Olga Bogdanovna Dubinova, post-graduate student of the Department of Physical Metallurgy and Non-Metal Materials,

Oksana Yurievna Elagina, Dr. of tech. sci., professor, Head of the Department of Tribology and Technology of Repair of Oil and Gas Equipment,

Alexander Konstantinovich Prygaev, Cand. of tech. sci., Professor, Dean of the Faculty of Mechanical Engineering,

Nikita Sergeevich Zakharov, undergraduate Faculty of Mechanical Engineering

National University of Oil and Gas "Gubkin University"

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

e-mail: dubinovys@gmail.com, olga.dubinova90@mail.ru, elaguina@mail.ru, fim@gubkin.ru, 97zns@mail.ru

This article is devoted to the issue of creating reliable seals that can be used in pump engineering, as applied to the pumping of cryogenic liquids using the example of liquefied natural gas (LNG). The issue of creating such elements is very relevant for several reasons, firstly, due to failures of sealing devices, more than 55 % of failures of pumping equipment occur, and secondly, most of the used seals can be operated only in the range of positive or in negligible negative temperatures, which greatly limits their scope. The paper analyzes the main seals used in pumping oil and oil products, as well as in pumping LNG. The authors proposed a new seal design with the use of an intelligent material, namely titanium nickelide in the form of "over-elastic" wire. The use of this material will allow to maintain downforce in the zone of contact of the seal with the sealing surface, which will increase the tightness of the assembly, reduce the number of shutdowns of equipment to replace the seal and, as a result, increase the mean time between failures. It should also be noted that the use of this material will expand the temperature range of operation of the new seal.

Keywords: stuffing box seals; mechanical seals; titanium nickelide; LNG transfer pumps; intelligent materials; shape memory materials.

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UDC 622.276.53.054.23:621.67-83 DOI: 10.33285/1999-6934-2020-2(116)-32-35

ON THE ISSUE OF THE RELEVANCE OF CREATING ENERGY-EFFICIENT
STAGES OF HIGH-OUTPUT VANE PUMPS FOR OIL PRODUCTION (p. 32)

Vladimir Nikolaevich Ivanovsky, Dr. of tech. sci., Professor, Head of the Department of Machinery and Equipment of Oil and Gas Industry,

Nikolai Nikolaevich Sokolov, senior lecturer, Department of Machinery and Equipment of Oil and Gas Industry,

Yuriy Andreevich Donskoy, Cand. of tech. sci., associate professor, Department of Machinery and Equipment of Oil and Gas Industry,

Albert Azgarovich Sabirov, Cand. of tech. sci., associate professor, Department of Machinery and Equipment of Oil and Gas Industry

National University of Oil and Gas "Gubkin University"

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

e-mail: ivanovskiyvn@yandex.ru, sokolovnn2010@rambler.ru, don125@yandex.ru, albert_sabirov@mail.ru

The share of mechanized oil production makes 50…60 % of total energy cost in oil and gas producing companies, while up to 30 % of oil self-cost is the cost of electrical energy. There are not many high-output electric-driven pumping units for oil production, but their unit capacity is very high, and, consequently, the lack of energy efficiency of such pumping units reduces the overall efficiency of oil production. Due to the fact that the main source of energy losses in electrical vane pumping units (EVPU) is the vane pumps themselves, the attention should be firstly paid to this unit when developing an energy-efficient EVPU.

At the same time, increase of the vane pump efficiency is directly related to reduction of the discharge head stage as well as to the increase of the cost and mounting height of each stage. Therefore, often, when the efficiency of the pump stage increases, the pump itself becomes much more expensive being unable to reduce the total cost of this type equipment ownership.

In this regard, an alternative solution is proposed that involves changing of the approach to EVPU, which provides the maximum possible efficiency during the life operational cycle of this type of the equipment. To provide implementation of this option, it is necessary to know the laws of degradation of EVPU operational characteristics over time, depending on the operating conditions.

It is concluded that the improvement of the energy efficiency of high-output pumping units by at the expense of creating efficient stages is an urgent task, the solution of which can significantly reduce energy costs for oil production. But, at the same time, the total cost reduction of ownership of high-output pumping units is not always feasible due the efficiency increase of the electric-driven vane pumps stages.

Keywords: electrically driven vane pump (EDVP); energy efficiency; total cost of ownership; degradation of a pumping unit characteristic.

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UDC 622.276.5.05 DOI: 10.33285/1999-6934-2020-2(116)-36-41

IMPROVEMENT OF OIL AND GAS PRODUCTION EQUIPMENT
BASED ON THE SYSTEMS EVOLUTION ANALYSIS (p. 36)

Vsevolod Yakovlevich Kershenbaum, Dr. of tech. sci., Professor, Head of the Department of Standardization, Certiﬁcation and Quality Control of Oil and Gas Equipment Production

National University of Oil and Gas "Gubkin University"

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

e-mail: tkaning@yandex.ru

Sabir Gabib Babaev, Dr. of tech. sci., Professor, Head of the Problem Laboratory

Scientific Research Institute "Geotechnological Problems of Oil, Gas and Chemistry"

227, Dilyara Alieva str., Baku, AZ1010, Republic of Azerbaijan

Ibrahim Abulfas Gabibov, Dr. of tech. sci., Professor, Head of the Department

Azerbaijan State University of Oil and Industry

34, Azadlyg prosp., Baku, AZ1010, Republic of Azerbaijan,

e-mail: h.ibo@mail.ru

Competitive position of oil and gas field production equipment, and therefore, further increase of its quality and reliability, are closely related to the law of technical systems (TS) progressive evolution. The above-said law reflects the effectiveness of changes made in the TS during the period of a specific stage of development, making it possible to identify the main sustainable factors affecting its further development. Moreover, it is important to identify the feasibility of the applicable TS improvement or a fundamentally new TS development.

Based on the studies conducted, an analysis is made of the state of evolution of assemblies of the hydraulic part of high pressure pumps. Using the method of "parallel evolution lines", based on the analysis of the parallel development of similar TS, linked by functional relationship – valves of oilfield and mud pump valves, a unified valve design has been developed.

The evolutionary state of wellhead equipment for sucker-rod pumping units was also analyzed. The main directions and priorities associated with the further increase in the competitiveness of research objects are determined.

Keywords: competitiveness; quality; reliability; technical systems; evolution; oilfield pumps; mud pumps; wellhead equipment; valve; wellhead stock; wellhead seal.

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UDC 622.279 DOI: 10.33285/1999-6934-2020-2(116)-42-47

ANALYSIS OF THE QUALITY CHARACTERISTICS OF A SHELL-AND-TUBE
EVAPORATOR (REBOILER) IN THE LIQUEFIED NATURAL GAS
PRODUCTION CYCLE (p. 42)

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

Mariya Sergeevna Demidenko, undergraduate

National University of Oil and Gas "Gubkin University"

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

e-mail: yasashin@rambler.ru

Hydrocarbon raw materials and, especially, natural gas processed into liquefied natural gas (LNG) is the most important component of the country’s fuel and energy complex. The quality of the equipment used in the extraction, transportation and processing of gas is given priority. In the technological cycle of LNG production, the main role is played by heat exchange equipment, among which heat exchangers – reboilers – stand out. The paper analyzes the qualitative characteristics of the reboiler, namely, the shell-and-tube evaporator; its structural scheme is given. The analysis of normative-technical documentation (standards) by quality indicators made it possible to draw up a procedural sequence of hydraulic tightness testing procedures and evaluate the quality of welds with a variety of non-destructive testing methods.

Keywords: a shell-and-tube evaporator; liquefied natural gas; quality; standard; testing.

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UDC 622.24.05 DOI: 10.33285/1999-6934-2020-2(116)-48-53

STUDY OF THE CALIBRATOR-EJECTOR STRENGTH (p. 48)

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

Konstantin Antonovich Myagkov, computational modeling specialist, structural analyst of the 1^st grade

LLC "Ideal PLM CIS"

8, bld. 1, Nauchny proezd, Moscow, 117246, Russian Federation,

e-mail: myagkov_k@list.ru

A study of the calibrator-ejector structural strength was made and its ability to effectively bear operational loads was evaluated. A computational experiment by the finite elements method was carried out. The values of stresses caused by the action of loads during operation was determined and shown. The safety margins with respect to the material yield strength of the calibrator-ejector construction are determined. Graphic materials are presented that allow comparing the safety margins of variously designed calibrator-ejector under the same loading conditions.

The introduction efficiency and the possible use of the above-said drilling calibrating ejection unit, which improves the efficiency of drilling wells of any configuration and reduces energy consumption, increase the efficiency of drilling wells of any configuration, reduce the energy consumption during rock destruction, increase the drilling rate and mechanical speed of the drilling tool are proved.

Keywords: drilling calibrating ejection unit; calibrator-ejector; strength; stress-strain state; margin of safety; drilling of oil and gas wells; mathematical modeling; Simcenter 3D; Simcenter Nastran.

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UDC 621:622.276.5 DOI: 10.33285/1999-6934-2020-2(116)-54-58

PROVISION OF THE MASTER LINK ACCURACY DURING ASSEMBLING
APPLYING THE GROUP INTERCHANGEABILITY METHOD (p. 54)

Vladimir Anatolievich Timiryazev, Dr. of tech. sci., Professor

Moscow State Technical University "Stankin"

1, BOX-4, Vadkovsky pereulok, Moscow, 127994, Russian Federation,

e-mail: timwa38@mail.ru

Mikhail Zaurbekovich Khostikoev, Dr. of tech. sci., Professor,

Vera Nikolaevna Ageeva, Cand. of tech. sci., associate professor

National University of Oil and Gas "Gubkin University"

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

e-mail: khostikoevmz@mail.ru, com@gubkin.ru

Victoria Umedovna Mnatsakanyan, Dr. of tech. sci., Professor

Moscow University of Steel and Alloys

4, Leninsky prosp., Moscow, 119049, Russian Federation,

e-mail: kancela@misis.ru

The paper considers the methodology of calculation of the maximum deviations and group tolerances when applying the group interchangeability method on the example of the gap accuracy increase in the connection of the hydraulic cylinder with the rod. The application of the group interchangeability method (selective assembly) ensures high accuracy of the connection in low link dimensional chains, for example, in the rod-cylinder connection, which can occur in sucker-rod pumps and compressors. The essence of the method lies in the fact that the required accuracy of the gap in the connection is achieved by including the components (parts) into the dimensional chain, belonging to one of the groups into which the parts are previously sorted. The application of the group interchangeability method provides an effective solution of technological problems of increasing the gap (tightness) accuracy during the assembly of oil and gas engineering products.

Keywords: group interchangeability; master link; size chain; group tolerance.

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UDC 621.646.1 DOI: 10.33285/1999-6934-2020-2(116)-59-62

DECOMPOSITION AS THE BASIS OF BINARY COMPARISONS
IN FOREIGN AND DOMESTIC REGULATORY DOCUMENTATION
FOR SHUT-OFF AND CONTROL VALVES (p. 59)

Vsevolod Yakovlevich Kershenbaum, Dr. of tech. sci., Professor, Head of the Department of Standardization, Certiﬁcation and Quality Control of Oil and Gas Equipment Production,

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

Ivan Andreevich Shchipakov, post-graduate student

National University of Oil and Gas "Gubkin University"

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

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

The paper considers the key foreign and domestic regulatory documents that impose requirements on the safety and quality of shut-off and control valves. The necessity of a comparative analysis of the requirements of Russian and foreign standardization documents through binary comparisons of various sets of documents is substantiated. As a result of the study, the degree of harmonization of foreign and domestic documents for pipeline valves was revealed, which in future will provide conducting of a risk analysis of the established differences in Russian and foreign standards.

Keywords: shut-off and control valves; pipeline valves; standards; standardization documents; comparative analysis.

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UDC 658.3 DOI: 10.33285/1999-6934-2020-2(116)-63-66

DEPARTMENT OF OIL AND GAS PROCESSING EQUIPMENT:
STAFFING OF OIL AND GAS PROCESSING AND PRODUCTION
OF LIQUEFIED NATURAL GAS SECTORS OF OIL AND GAS
INDUSTRY (p. 63)

Viktor Alekseevich Lukyanov¹, Cand. of tech. sci., head of the Department of Oil and gas processing equipment,

Alexey Petrovich Zavyalov^{1, 2}, Cand. of tech. sci., chief process engineer ITC "Orgtechdiagnostika" of JSC "Gazprom orgenergogaz"

¹ National University of Oil and Gas "Gubkin University"

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

e-mail: luk@gubkin.ru

² JSC "Gazprom orgenergogaz"

11, Luganskaya str., Moscow, 115304, Russian Federation,

e-mail: zavyalovap@yandex.ru

The paper considers the main scientific and practical achievements of the Department of Oil and Gas Processing Equipment of National University of Oil and Gas "Gubkin University", its contribution to the development of the domestic oil and gas processing industry, modern approaches to personnel training in the interest of oil refineries and LNG production industry.

Keywords: oil refining; liquefied natural gas (LNG); gas equipment; operation; designing; repair; installation; personnel training.

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UDC 006.052 DOI: 10.33285/1999-6934-2020-2(116)-67-70

IMPROVEMENT OF REGULATORY TECHNICAL SUPPORT IN THE FIELD
OF LIQUEFIED NATURAL GAS PRODUCTION (p. 67)

Elena Borisovna Fedorova, Cand. of tech. sci., associate professor of the Department of Oil and Gas Processing Equipment,

Alexander Vyacheslavovich Tyrsin, post-graduate student

National University of Oil and Gas "Gubkin University"

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

e-mail: fedorova.e@gubkin.ru

Growth in the share of liquefied natural gas (LNG) in the global gas trade stimulates the development of the LNG industry in the Russian Federation. Designing and launching of new LNG production facilities requires the development, implementation of new and use of the existing national and international standards in the field of LNG production. The paper presents the results of the analysis of international and national standards for technological equipment used in the LNG production. The lack of national standards for certain types of equipment is revealed. It was noted that regulatory technical support in the field of LNG production is a priority in terms of state policy in the field of energy production, energy conservation and energy efficiency and safety improvement.

Keywords: liquefied natural gas (LNG); LNG production; standardization; GOST (All-Union State Standard); import substitution; equipment localization.

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UDC 665.61 DOI: 10.33285/1999-6934-2020-2(116)-71-78

TECHNOLOGIES FOR REDUCING VISCOSITY
OF OIL AND OIL PRODUCTS (p. 71)

Eliza Bagautdinovna Gafarova, senior lecturer, the Department of Oil and Gas Processing Equipment,

Dmitry Vladimirovich Sviridov, assistant, the Department of Oil and Gas Processing Equipment

National University of Oil and Gas "Gubkin University"

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

e-mail: gafarovaeliza@mail.ru, dvsviridov@rambler.ru

The paper overviews scientific work on the processing of highly viscous oil and petroleum products in order to change their basic physical and chemical characteristics to reduce their dynamic viscosity. The advantages and disadvantages of these technologies are described. The types and properties of viscous oil and petroleum products are considered.

Keywords: high viscous oil; viscosity reduction technologies; oil; ultrasound; cavitation; magnetic field; dynamic viscosity; electric field.

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UDC 622.691.24 DOI: 10.33285/1999-6934-2020-2(116)-79-83

TASKING ON INTELLECTUALIZATION
OF UNDERGROUND GAS STORAGES (p. 79)

Alexander Sergeevich Panteleev, Cand. of tech. sci., associate professor, Department of Standardization, Certification and Quality Control of Oil and Gas Equipment Production,

Daria Vasilievna Kodash, student

National University of Oil and Gas "Gubkin University"

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

e-mail: aleksandr.panteleew@yandex.ru

The paper discusses the automation and the procedure of the subsequent implementation of intellectualization in order to increase the effective operation of underground gas storage facilities. A program has been developed to provide an automated process for UGS facilities management. The intellectualization of the process at the stage of gas purification from mechanical impurities is described. A conditional sequence has been formed for the development of an intelligent underground gas storage system.

Keywords: natural gas; gas reservation; underground gas storage; automation; intellectualization; control of the productive (qualitative) characteristics of natural gas; gas purification.

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UDC 621.646.986 DOI: 10.33285/1999-6934-2020-2(116)-84-91

INNOVATIVE-TECHNICAL SOLUTIONS
FOR OIL AND GAS PIPELINE DEVICES (p. 84)

Igor Nikolaevich Karelin, Dr. of tech. sci., Professor, Department of Standardization, Certiﬁcation and Quality Control of Oil and Gas Equipment Production,

Vyacheslav Dmitrievich Sedykh, Dr. of phys.-math. sci., Professor, Department of Standardization, Certiﬁcation and Quality Control of Oil and Gas Equipment Production,

Vera Nikolaevna Ageeva, Cand. of tech. sci., associate professor, Department of Standardization, Certiﬁcation and Quality Control of Oil and Gas Equipment Production

National University of Oil and Gas "Gubkin University"

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

e-mail: KARELIN-IN@MAIL.RU

The paper presents some results of "Resource" group innovation activity of Oil and Gas Machine Manufacturing Technology Department of Engineering Mechanics Faculty of National University of Oil and Gas "Gubkin University", obtained during scientific-research, experimental development and technological works. The objects of the works were current problems of the oil and gas pipeline devices reliability. The received and expected scientific and technical advantages of a number of developments pertaining to solving the mentioned problems of pipeline devices of oil and gas tree valves, technological pipeline connections of equipment operated in working environments, contaminated by mechanical and corrosion-active components are considered in brief. The methodology for assessing the economic effect of modernization of the shut-off and control devices of the oil and gas tree valves and repair of the shut-off valves, approved in the industry is available. Based on the results of operational tests of prototype products, manufactured according to patents, the inventions received the reasonable recommendations of PJSC "Gazprom" to use the technical solutions in design and production organizations of the country. The lack of motivation of domestic oil and gas equipment manufacturers and foreign specialists’ active interest in Russian innovations were noted.

Keywords: innovation; invention; pipeline device; technical solution; computer modeling; constructive scheme; performance test; manufacturer; economic effect; motivation.

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UDC 620.193+620.197:622.692.4 DOI: 10.33285/1999-6934-2020-2(116)-92-96

PREDICTION OF THE PROBABILITY OF FAILURE
OF DEPRESSURIZATION OF INDUSTRIAL PIPELINES DEPENDING
ON THE FACTORS OF SEWAGE AGGRESSION (p. 92)

Oksana Yurievna Elagina, Dr. of tech. sci., Head of the Department of tribology and technology of repair of oil and gas equipment,

Kseniya Vasilievna Nakonechnaya, post-graduate student

National University of Oil and Gas "Gubkin University"

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

e-mail: elagina@mail.ru

The article considers the possibility of implementing the requirements of SP 366.1325800.2017 Field pipelines. Evaluation of technical solutions based on risk analysis on the example of studies of the development of corrosion processes of steels 20A and 09G2S in field environments of different aggressiveness. A review of data on the composition of wastewater samples from fields in Western Siberia was carried out, on the basis of which combinations and ranges of factors were selected for the study. The methodology of the research is presented in detail. According to the data obtained during the study, depending on three variable factors, namely the hydrogen index (pH), salinity and temperature, expressions were obtained for calculating the corrosion rate, in which all of the above factors are taken into account. The obtained dependences made it possible to assess the contribution of aggressive factors of the fishing environment to the probability of depressurization of the fishing pipeline. The analyzed data on the failure probabilities show that in most cases the probability of failure is lower for steel 09G2S. It is especially worth noting that the data obtained play an important role in risk assessment in the design of oil field pipelines.

Keywords: corrosion; corrosion factors; oil field pipelines; salinity; corrosion rate; corrosive components; formation water; pH value.

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UDC 621.791+624.042+624.044+624.046 DOI: 10.33285/1999-6934-2020-2(116)-97-103

CONFIRMATION OF MAIN PIPELINES WELDED PIPES QUALITY
BY THE INDICATORS OF A LONG CRACK PROPAGATION RESISTANCE (p. 97)

Georgy Ivanovich Makarov, Dr. of tech. sci., Professor, Department of Welding and Monitoring of Oil and Gas Facilities

National University of Oil and Gas "Gubkin University"

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

e-mail: svarka@gubkin.ru

The paper presents the scientific-practical results of multi-year work with respect to gas pipelines resistance estimation, as well as pipelines subjected to pneumatic tests, to long crack propagation. The following are given: the description of a mathematical modela of a gas pipeline long crack propagation; the calculation results of the required quantitative indicators of cracks dynamic resistance; the experimental confirmation methodology of full-sized welded pipes quality conformation by crack tip opening. The paper overviews the previously proposed mathematical models of a gas pipeline crack propagation.

The completeness of factors and phenomena taken into account by them is estimated. The main drawbacks of the above-said models are the absence of the influence of elastoplastic metal deformation in the moving crack top, as well as the influence of soil mass inertia forces, which prevents the pipe walls from opening during a long crack propagation (for underground pipelines). A description is given for the theoretical model proposed by the author for gas pipeline long crack propagation, developed on the basis of fracture mechanics classical approaches. A block diagram and an algorithm for analytical solution of thin-walled cylindrical shell boundary-value dynamics problem are presented. Gas decompression processes during gas pipeline long crack propagation are described by theoretical solutions of the following problems of gas dynamics: longitudinal wave propagation in pipes and Prandtl – Mayer radial-axial expansion. The elastoplastic deformation of gas pipe section in the region of the stationary moving crack top is described by the analytical solution of the thin-walled cylindrical shell boundary-value dynamics problem. The solution to this boundary-value dynamics problem was obtained analytically by the variational Rayleigh – Ritz method. An example of calculation of a gas pipeline resistance to long crack propagation is given, and one of the summary tables of normative requirements for pipe metal fracture toughness depending on the operating parameters of a gas pipeline during its underground installation is also presented. All calculations of fracture toughness parameters were performed using a specially developed computer program.

The determination of the required pipes metal mechanical properties, providing resistance to long crack propagation, due to the complexity of the pipe wall deformation mechanism in case of a long crack propagation, in principle, is impossible to carry out in the laboratory on any samples. Adequate reproduction of the mechanism of the pipe wall deformationnear the top of a stationary moving crack in gas pipeline during a long crack propagation is possible only on a real pipe when it is burst by a liquid or gas internal pressure. The paper describes the methodology for pipes full-scale testing in order to determine the fracture toughness. An example of such a test is given and the prospects for the established requirements achievement for high-strength pipes of new generation gas pipeline are analyzed.

Keywords: main pipelines; welded pipes; long crack propagation; mathematical model; pipe quality confirmation; crack tip opening; full-scale tests.

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UDC 628.517.2 DOI: 10.33285/1999-6934-2020-2(116)-104-109

TECHNOLOGICAL PIPELINES DYNAMIC STABILITY OF BUSTER COMPRESSOR
STATIONS ON THE BASIS OF THE RESULTS OF ADVANCED VIBRATION STUDIES
AND CALCULATIONS OF ACOUSTIC OSCILLATIONS (p. 104)

Leonid Isaakovich Sokolinsky^{1, 2}, Cand. of tech. sci., chief mechanical engineer of the ITC "Orgtechdiagnostika", Professor of the Department of Thermodynamics and Heat Engines”,

Alexey Sergeevich Lopatin¹, Dr. of tech. sci., Professor, Head of the Department of Thermodynamics and Heat Engines,

Valery Borisovich Paidak², chief specialist of the Department of Dynamics and Strength of the ITC "Orgtechdiagnostika"

¹ National University of Oil and Gas "Gubkin University"

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

e-mail: lopatin.a@gubkin.ru

² JSC "Gazprom orgenergogaz"

11, Luganskaya str., Moscow, 115304, Russian Federation,

e-mail: sokolinskiy@oeg.gazprom.ru, pajdak@oeg.gazprom.ru

The paper discusses the results of extended vibration studies and calculations of gas acoustic vibrations performed for the technological pipelines of the booster compressor station (BCS) of the gas production company of PJSC "Gazprom". The necessity of the work was caused by the fact that during the BCS operation, elevated vibration levels of shut-off and control valves (SCV) were recorded both on the connecting piping (CP) of gas compressing units (GCU) and in the sites quite remote from the GCU. According to the results of extended vibration surveys, it was found that the recorded vibration was a result of gas pulsations in the pipeline system caused by the occurrence of acoustic resonant vibrations in the sections of CP with waste-free branches. Such wasteless branches in collector systems can be presented by, for example, sections, connected with the collectors of GCU inlet/outlet pipelines with closed taps. These fluctuations are called "dead ends". The peculiarity of deadlock oscillations is their possible elimination either by changing the operating mode of the station, or by changing the configuration of the pipeline system. Change of the operation mode to ensure the vibration resistance of the SCV is often impossible due to the operating conditions of the compressor station (CS). The SCV configuration at the operating compressor station cannot be changed without its partial or complete shut-down. Therefore, the tasks of SCV dynamic stability provision should be solved at a project development stage. However, for one reason or another, this is not always done, or is done at an inappropriate level. The dynamic stability of the SCV of the BCS, considered in the present paper, was calculated at the design stage.

The paper presents some results of diagnostic vibration studies and recommendations for the reconstruction of the pipeline system, obtained on the basis of gas-dynamic calculations.

Keywords: pipeline; piping connection; line; collector; gas compressing unit; shutoff valves; vibration resistance; vibration; gas oscillation; resonance; vibration speed; amplitude; frequency.

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NATIONAL UNIVERSITY OF OIL AND GAS "GUBKIN UNIVERSITY"

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