Equipment and Technologies for Oil and Gas Complex

The paper presents the results of studies of dynamic loading of V-belt gears of oil-producing equipment using computational dependencies and numerical methods of the ANSYS software package. It is established that the V-belts of the drive are located in the resonant zone of vibrations at certain speeds. Using the ANSYS program, the most stressed areas were identified during pre-tension of belts, as well as free and forced vibrations.

Keywords: dynamic loading; V-belt transmissions; resonant vibrations; harmonic and modal analysis.

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UDC 622.24.051.55 DOI: 10.33285/1999-6934-2021-2(122)-11-14

ANALYSIS OF METHODS FOR DIAGNOSING TECHNICAL STATE
OF BODY-TYPE ROLLER-CONE DRILL BITS (p. 11)

Dmitry Andreevich Boreiko, Cand. of tech sci., Head of the Department "Machines and Equipment of Oil and Gas Industry",

Igor Yurievich Bykov, Dr. of tech. sci., Professor, Department of "Machines and Equipment of Oil and Gas Industry"

Ukhta State Technical University

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

Dmitry Yurievich Serikov, Dr. of tech. sci., associate professor, Department of Standardization, Certification and Management of Oil and Gas Equipment Quality

National University of Oil and Gas "Gubkin University"

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

e-mail: serrico@rambler.ru

The paper analyzes several existing methods for diagnosing the technical state of roller-cone drill bits. The factors that negatively affect the performance of various elements of body-type roller-cone drill bits and possible damage to this type of drilling tool during its operation. Recommendations are given to reduce the risks of emergencies during drilling in case of repeated use of body-type roller-cone drill bits of large diameter. The necessity of developing a set of methods for non-destructive testing, which makes it possible to obtain comprehensive information on the technical state of welded joints of body-type roller-cone drill bits, with the lowest costs for their diagnostics, has been substantiated. The implementation of these recommendations will improve the efficiency of drilling wells for various purposes due to the reduction of the risks of emergencies and reduction of the cost of drilling.

Keywords: well drilling; roller-cone drill bit; bit body; weld; cutting structures of roller-cone drill bit; tool breakage.

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UDC 622.276.53.054.22 DOI: 10.33285/1999-6934-2021-2(122)-15-18

RADIAL MECHANICAL SEAL IN SUCKER-ROD PUMPS (p. 15)

Boris Semenovich Zakharov, Cand. of tech. sci., General Director

LLC "Ecogermet-M"

125, bld. 2, apart. 304., Leninsky prosp., Moscow, 117513, Russian Federation,

e-mail: ecogermet@mail.ru

Vladimir Rostislavovich Drachuk, senior lecturer, Institute of Oil and Gas named after M.S. Gutseriev

Udmurt State University

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

e-mail: nfkafedra@udsu.ru

Vladimir Petrovich Budin, General Director

LLC NPP "OSCON"

17, Letter D1, Amurskaya str., Sarapul, 427964, Udmurt Republic, Russian Federation,

e-mail: oscon.bav@mail.ru

A slotted seal of a plunger-cylinder pair in conditions of a sucker-rod pump operation is characterized by increased friction and wear, especially in complicated wells (increased and high viscosity of well products, wellbore curvature, mechanical impurities, etc.). All these factors contribute to a decrease of the pumping unit flow rate due to an increase in leaks and elastic deformations of the rod string, an increase in the amplitude of loads, in the length of the rod string zone subjected to alternating stresses, jamming of the plunger and breakage of the rod string. Therefore, problems related to seal leakages reduction and rods reliability improvement are of a paramount importance.

To a large extent, this problem is solved by replacing the throat seal of the cylinder-plunger pair by a small-sized and efficient mechanical radial seal. On the basis of the specified mechanical seal, a number of new types of downhole sucker rod pumps (SRP) for oil production have been developed. The results of field tests and operation proved their main parameters advantages (flow rate coefficient and mean time before failure) in comparison with pumps with a slotted seal.

A new design of the mechanical radial seal of SRP plungers is proposed, which allows not only to reduce leaks, but also to simplify its manufacture, assembly and repair. Further improvement and use of the mechanical seal is a certain reserve for increasing the profitability of oil production, especially from marginal wells and wells with complicated conditions.

Keywords: sucker rod pump; plunger; leak; radial mechanical seal; friction; wear; volumetric efficiency; mean time before failure.

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UDC 622.245.73 DOI: 10.33285/1999-6934-2021-2(122)-19-24

UPDATING OF BLOWOUT PREVENTING EQUIPMENT
USING A PNEUMATIC HYDRAULIC DRIVE OF PREVENTER RAMS (p. 19)

Timergaley Kabirovich Apasov, Cand. of tech. sci., associate professor, Department of Development and Operation of Oil and Gas Deposits,

Ekaterina Evgenievna Levitina, Cand. of tech. sci., associate professor, Department of Development and Operation of Oil and Gas Deposits

Tyumen Industrial University

70, Melnikaite str., Tyumen, 625039, Russian Federation,

e-mail: apasov-timur@mail.ru, levitinaee@tyuiu.ru

Gaydar Timergaleevich Apasov, Cand. of tech. sci., chief specialist

LLC "Gazpromneft STC"

14, 50 let Oktyabrya str., Tyumen, 625048, Russian Federation,

e-mail: apasov_gaydar@inbox.ru

Since the safe operation of oil wells is a mandatory requirement when developing oil fields, the problem of using reliable and modern equipment for repair work is urgent. The paper provides an example of updating of blowout preventer equipment through the development and introduction of a pneumatic hydraulic drive of preventer rams. The equipment is presented in three modifications, differing in the power supply system of the hydraulic drive and the location of the unit. The main technical parameters of the equipment and pilot tests data obtained during wells workover by such enterprises as JSC "INKOMneft", JSC "SNPKh", JSC "RN–Yuganskneftegaz", JSC "RN–Samaraneftegaz", JSC "EPRS" are presented. The introduction of this equipment will increase the safety and rate of work during the elimination of emergencies at oil wells.

Keywords: well; operation; gas-oil-water manifestations; blowout preventer equipment; preventer.

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UDC 006:622.276:621.643.412 DOI: 10.33285/1999-6934-2021-2(122)-25-29

FEATURES OF THE RUSSIAN STANDARDIZATION FRAMEWORK
FOR FLANGE CONNECTIONS IN THE CONTEXT OF EXPANDING THE SHARE
OF DOMESTIC SUPPLIERS FOR INTERNATIONAL PROJECTS (p. 25)

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

Tatiana Alekseevna Guseva, Cand. of tech. sci., associate professor, Department of Standardization, Certiﬁcation and Quality Control of Oil and Gas Equipment Production,

Alexander Sergeevich Panteleev, 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: tguseva14@yandex.ru, aleksandr.panteleew@yandex.ru

The paper deals with the problems of national standardization in Russia in relation to the harmonization of domestic and foreign documents for oil and gas facilities. The implementation of the developed methodology for assessing and selecting Russian suppliers of equipment and technical devices for oil and gas companies is presented on the example of flanges and gaskets. A comparative analysis of Russian, international, American, Norwegian standardization documents for the selected type of product is carried out, the degree of equivalence of their requirements is determined. The peculiarities of the Russian regulatory framework for flanges and gaskets are revealed, the differences in requirements between the GOST, GOST R documents and the standards of ISO, API, ASTM, NORSOK, etc. are determined. The results of the study made it possible to develop recommendations for domestic manufacturers in order to participate in international oil and gas projects.

Keywords: flanges; gaskets; standards; comparative analysis; risk assessment; supplier assessment.

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UDC 622.276.5.054.3 DOI: 10.33285/1999-6934-2021-2(122)-30-34

TECHNICAL REQUIREMENTS FOR DOMESTIC STEEL ELECTRIC-WELDED
FLEXIBLE LONG TUBING USED WHEN EXTRACTING HARD-TO-RECOVER
HYDROCARBON RESERVES (p. 30)

Vladimir Aleksandrovich Egorov, Head of the Corporate Scientific-Technical Center of Pipe Products Development,

Konstantin Borisovich Konishchev, Deputy-Head of the Corporate Scientific-Technical Center of Pipe Products Development

LLC "Gazprom VNIIGAZ"

15, bld. 1, Proektiruemy proezd No. 5537, Razvilka poselok, 142717, Leninsky district, Moscow region, Russian Federation,

e-mail: V_Egorov@gwise.vniigaz.gazprom.ru, K_Konischev@vniigaz.gazprom.ru

Boris Aleksandrovich Erekhinsky, Cand. of tech. sci.

Association of Scientists and Specialists "Energy and Civil Society"

e-mail: Bogair1957@yandex.ru

The current state of the oil and gas industry requires widespread introduction of coiled tubing technologies, one of the main elements of which is coiled tubing (CT). Until recently, all coiled tubing used in the Russian oil and gas complex was imported, which increased the cost of the equipment, delivery time and risks associated with the sectoral sanctions. The article discusses the experience of developing technical requirements for steel electric-welded flexible long tubing for the extraction of hard-to-recover hydrocarbon reserves in order to create a complex of highly efficient technologies for the production of import-substituting CT.

Keywords: coiled tubing; coiled tubing technologies; hard-to-recover hydrocarbon reserves; import substitution; geometric parameters of pipes; strength group; mechanical properties; chemical composition of the metal; metal microstructure; acceptance rules; test methods.

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UDC 622.242.2 DOI: 10.33285/1999-6934-2021-2(122)-35-42

ASSESSMENT OF QUALITY CHARACTERISTICS
OF OIL AND PETROLEUM PRODUCTS (p. 35)

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

Ekaterina Ilyinichna Martynova, Undergraduate

National University of Oil and Gas "Gubkin University"

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

e-mail: yasashin@rambler.ru

Oil and petroleum products are the most important component of the fuel-energy complex of our country. Great attention is paid to the quality of hydrocarbon raw materials and their products, which is an urgent and economically feasible task. The paper presents a comparison of quality indicators of world reference and Russian oil brands, the difference between the requirements of the technical regulations of the Russian Federation and the EU directives for fuel. The performed analysis of domestic and foreign regulatory-technical documentation revealed the main indicators of the quality of automobile gasoline: octane number, sulfur content and fractional composition. Methodological developments and technical means of implementation are proposed that allow evaluating the quality of fuel, increasing its competitiveness.

Keywords: oil; petroleum products; gasoline; quality; standard; methodology; certification.

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UDC 539.373 DOI: 10.33285/1999-6934-2021-2(122)-43-47

STRESS-STRAIN CONDITION OF A SPHERICAL VALVE
IN A DRILLING WELL (p. 43)

Yuriy Nikolaevich Loginov^{1, 2}, Dr. of tech. sci., Professor, leading researcher,

Yuliya Valentinovna Zamaraeva^{1, 2}, post-graduate student, engineer-researcher, junior researcher

¹ Ural Federal University named after the first President of Russia B.N. Yeltsin

19, Mir str., Yekaterinburg, 620002, Russian Federation,

e-mail: j.n.loginov@urfu.ru, zamaraevajulia@yandex.ru

² M.N. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

18, S. Kovalevskaya str., Yekaterinburg, 620990, Russian Federation

It is noted that in the oil production practice, the balls act as valves that temporarily block wells and self-dissolve under the influence of drilling fluids. The purpose of the work is to simulate the operating conditions of the ball used in the well shut-off valve device. The boundary conditions of the ball valve operation are described. The boundary value problem is formulated for various ratios of the ball and saddle diameters. The results of the solution are presented in the form of the distribution of the degrees of deformation and average stresses. It is concluded that in the initial state of operation under an operational pressure, the ball may be plastically deformed in the valve seat, but at the same time retain its operability. With the ball diameter decrease due to its dissolution, the level of plastic deformation increases in the place of its contact with the valve seat. When the critical size is reached, the ball is pushed through and the well is opened. At a liquid pressure of 40 MPa, in the most loaded part of the ball the average stress in the metal can reach –470 MPa.

Keywords: well; dissolving metal; ball valve; magnesium; stresses; deformations.

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UDC 622.245.42.001 DOI: 10.33285/1999-6934-2021-2(122)-48-54

STUDY OF THE DOWNWARD FLOW MOVEMENT
OF THE CEMENT SLURRY IN A CASING STRING (p. 48)

Olga Aleksandrovna Kovalevskaya, senior engineer,

Alexander Mikhailovich Likhushin, Dr. of tech. sci., chief researcher

LLC "Gazprom VNIIGAZ"

15, bld. 1, Proektiruemy proezd № 5537, Razvilka poselok, 142717, Moscow region, Russian Federation,

e-mail: Kovalevskay22@mail.ru, lihushin@list.ru

The article an analytical study of the cement slurry movement in a downward flow depending on the depth of its lower boundary. The influence of the parameters of drilling and cement slurries, the diameter of the casing string on the speed of its movement and on the flow continuity loss has been studied. The results obtained are analyzed. It has been proven that in order to exclude the loss of the flow continuity of the cement slurry, it is necessary to pump (inject) the cement slurry into the casing string at the rate of more than 4 m/s, which is technically possible, but economically inexpedient.

Keywords: drilling mud; cement slurry; density; speed; depth; well; casing string.

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UDC 622.276.6 DOI: 10.33285/1999-6934-2021-2(122)-55-61

IMPROVEMENT OF FLOW-DIVERTING TECHNOLOGY
FOR ENHANCED OIL RECOVERY USING GEL SYSTEMS
WITH PROLONGED ACTION (p. 55)

Dmitry Aleksandrovich Gospodarev, senior researcher,

Dmitry Viktorovich Tkachev, head of Department,

Vladimir Viktorovich Gulevich, leading engineer,

Anastasia Viktorovna Antuseva, chemist,

Igor Vladimirovich Lymar, Cand. of tech. sci., head of Laboratory,

Evgeny Nikolaevich Khodkov, leading engineer

Production association "Belorusneft" BelNIPIneft

15b, Knizhnaya str., Gomel, 246003, Republic of Belarus,

e-mail: d.gospodarev@beloil.by

A novel technological approach is proposed to increase the efficiency of chemical improved oil recovery in heterogeneous reservoirs. This technique is based on the application of crosslinked polymer system with prolonged gelation time. The results of laboratory and field studies of the gel system are presented, demonstrating superior technological performance. The developed polymer system has a delayed crosslinking time and high gel stability in specific reservoir conditions compared to traditionally used polymers. Due to high mobility in pore channels, the proposed gel system selectively penetrates into high-permeable layers and forms extended flow-diverting barriers that allow to improve the sweep efficiency of oil-saturated deep reservoir areas.

Keywords: flow-diverting technology; crosslinking polymer systems; gel systems; enhancement of oil recovery; heterogeneous reservoirs; sulfonated polyacrylamide; prolonged gelation.

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UDC 665.61 DOI: 10.33285/1999-6934-2021-2(122)-62-68

STRUCTURAL VISCOSITY OF NON-NEWTONIAN OILS (p. 62)

Gudrat Isfandiyar Kelbaliev, Dr. of tech. sci., Professor, corresponding member of Azerbaijan National Academy of Sciences, Head of Department,

Dilgam Bebir Tagiev, Dr. of chemical sci., Professor, academician of the Azerbaijan National Academy of Sciences (ANAS), Director

Institute of Catalysis and Inorganic Chemistry of the ANAS

29, Javid prosp., Baku, AZ1143, Republic of Azerbaijan,

e-mail: kkelbaliev@yahoo.com

Sakit Rauf Rasulov, Dr. of tech. sci., Professor, Head of the Department

Azerbaijan State Oil and Industry University

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

e-mail: rasulovsakit@gmail.com

As a result of the analysis of the dispersion medium, many semi-empirical formulas have been proposed to estimate the viscosity of non-Newtonian oil depending on the water and asphalt-resinous substances in it. It is noted that the content of various particles in oil significantly affects the structural formation and its rheological properties and the particles concentration growth allows estimating the area of coagulation structures formation.

Keywords: rheology; structure; non-Newtonian oil; viscosity; asphalt-resinous substances.

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UDC 622.276.6 DOI: 10.33285/1999-6934-2021-2(122)-69-74

ANALYSIS OF THE METHODS FOR STUDYING THE COMPOSITION
AND PROPERTIES OF HIGH VISCOSITY OIL (p. 69)

Kyamilya Kyamal Agayeva, Cand. of geol.-mineral. sci., leading researcher

Institute of Oil and Gas of ANAS

9, Amirov str., Baku, AZ1000, Republic of Azerbaijan,

e-mail: kamila.agayeva@hotmail.com

Maral Koylybaevna Karazhanova, PhD,

Lyazzat Bishebaevna Zhetekova, senior researcher

Caspian State University of Technologies and Engineering named after Sh. Esenov

Main building, 32^nd micro-region, Aktau, 130000, Republic of Kazakhstan,

e-mail: mikado_70@inbox.ru, zhetekova81@mail.ru

Dinara Berkin Smagulova, masters’ student

Atyrau University of Oil and Gas named after S. Utebayev

45A, Baymukhanova str., Privokzalny micro-region, Atyrau, 060027, Republic of Kazakhstan,

e-mail: dinarali9497@gmail.com

The paper summarizes and analyzes the methods and methodological approaches to assessing the efficiency of extracting viscous oil from complicatedly-composed formations, studying the composition and properties of high-viscous hard-to-recover oil.

It is noted that in their studies, the authors pay great attention to the definition of the concept of hard-to-recover reserves, their classification and the assessment of the degree of oil recovery difficulty. And the following characteristics were taken as the basis for oil reserves classification – heterogeneity of reservoirs, presence of asphalt-resinous substances and paraffin in oil, causing a viscosity increase, the conditions of oil occurrence, first of all, reservoir permeability, consideration of which is of great importance when making technological decisions. Based on these facts, two groups of works were formed, a brief analysis of which is given in the paper.

The paper analyzes the results of researches on studying the relationship between the composition and properties of oil. In particular, the graphs of dependence of the temperature of oil saturation by paraffin on the content of asphaltens, resins and high-molecular paraffins, a large number of which have accumulated in their various variants and varieties, is studied. It is noted that a more correct estimate can be obtained from the results of statistical analysis.

In the light of the problems under study, the world experience of using various technologies and methods for enhancing oil recovery in fields with high-viscosity oil is also analyzed and the possibility of successful development of such fields using complex technologies is shown.

Keywords: high-viscosity oil; hard-to-recover reserves; composition of oil; oil properties; bedding conditions; classification; complex indicator of oil quality; oil saturation temperature by paraffin.

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UDC 622.691.4+550.837.21 DOI: 10.33285/1999-6934-2021-2(122)-75-78

GEODYNAMIC SAFETY OF MAIN GAS PIPELINES (p. 75)

Mikhail Mikhailovich Zaderigolova, Cand. of tech. sci., General Director

LLC "Altumgeo"

102, bld. 26, Mir prosp., Moscow, 129626, Russian Federation

Valentin Aleksandrovich Kalinin, post-graduate student

National University of Oil and Gas "Gubkin University"

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

In a number of regions of the country, the routes of main gas pipelines cross areas with active natural and technogenic hazardous geodynamic processes. A significant step forward in ensuring their geodynamic safety can be made by including radio wave methods in the monitoring system. The use of radio wave technology for diagnosing the pipe – soil system makes it possible to more quickly make responsible control decisions aimed at eliminating the possibility of accidents in main gas pipelines at the early stages of the development of hazardous natural and man-made processes.

Keywords: hazardous geological processes; security; main gas pipeline; radio wave method; stress-strain state.

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NATIONAL UNIVERSITY OF OIL AND GAS "GUBKIN UNIVERSITY"

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