Equipment and Technologies for Oil and Gas Complex

The paper presents the results of bench tests of mini-sections of electric submersible pumps (ESP) with different speed coefficient, but with the same nominal flow rate when being tested on a gas-liquid mixture (GLM). The results are dependencies plotted over the entire length of the liquid supply under the same suction conditions. These dependencies demonstrate the degradation of the complex characteristic – displacement of the optimal zone of operation of the pump unit, pressure drop at the pump outlet, efficiency coefficient and the pump power decrease.

It is concluded that the ESP characteristics degradation operating on the gas-liquid mixture (GLM) depends to a greater extent not only on such parameters as the pressure at the intake and the percentage of gas, but also on the design of the pump units themselves – the speed coefficient. Also, a recommendation was given on the effective use of pump units with a high rate of speed in wells where gas content at the pump intake there is the largest one. For a more detailed study of the ESP characteristics degradation when pumping a gas-liquid mixture, it becomes necessary to build a matrix of equipment applicability under different conditions at the suction and the design of the pump units themselves.

Keywords: electric submersible pump unit; pump stage; coefficient of speed of a pump unit; bench tests; gas-liquid mixture.

Order this article in the electronic library

UDC 622.24.051.64 DOI: 10.33285/1999-6934-2021-4(124)-11-15

PDC DRILLING BIT WITH A RETAINING DEVICE
FOR ROTATING CUTTERS (p. 11)

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

Georgy Sergeevich Mozgovoy

Samara State Technical University

Samara, Russian Federation

Dmitry Yurievich Serikov, Dr. of tech. sci.

National University of Oil and Gas "Gubkin University"

Moscow, Russian Federation,

e-mail: serrico@rambler.ru

The paper presents the research results for the development of PDC diamond bits structures with a new version of the rotating cutters mechanical fastening in the holes on the blades. Fastening is carried out without the cutters traditional heating and soldering by installing a floating collet conical spring stopper in a joint annular cavity made on the side walls of the cutter hole and the carbide base of the cutter. Such a floating stop locks the cutter from its movement along its axis, but allows it to rotate freely around this axis. This also makes it possible to constantly use during drilling all 100 % of the length of the rotating cutting edge of the cutter, instead of 10...15 %, due to the rigid soldering of the cutter. In turn, this allows a multiple increase PDC bits operational life-time.

Keywords: PDC diamond bit; bit blades; rock cutting cutters; fastening of cutters; heating when soldering cutters; PDC diamond inserts; restoration of PDC bits.

Order this article in the electronic library

UDC 621+66.092-977 DOI: 10.33285/1999-6934-2021-4(124)-16-20

PROCESS REACTOR LINE FOR INCREASING THE EFFICIENCY
OF OIL-CONTAINING WASTE PYROLYSIS (p. 16)

Eduard Arkadievich Petrovsky, Dr. of tech. sci., Professor,

Oleg Aleksandrovich Kolenchukov

Siberian Federal University, Institute of Oil and Gas

Krasnoyarsk, Russian Federation,

e-mail: petrovsky_quality@mail.ru, OlegAndrenalin.ru@mail.ru

Nikolay Anatolievich Smirnov, Dr. of tech. sci., Professor

Siberian State University of Science and Technology named after academician M.F. Reshetnev

Krasnoyarsk, Russian Federation,

e-mail: Smirnov@sibsau.ru

The paper presents a technological reactor line for oil sludge processing into useful products. This technological line contains two main units – pyrolysis reactors. The pyrolysis essence lies in controlling thermal decomposition of hydrocarbons into elementary parts. It results in, the formation of fuel compositions and raw materials for various industries. At the same time, this method of processing is less sensitive to the quality of raw materials, compared to other methods, and the amount of non-recyclable residue and harmful substances is minimized. The low temperature pyrolysis of oil waste – oil sludge – is studied by means of a developed sectional reactor. Samples of oil sludge from the deposits of the Krasnoyarsk Territory were used as a feedstock. At this stage of the research, hydrocarbon products of oil sludge decomposition were analyzed, and the performance of a single- and multi-section pyrolysis reactor was compared. Thus, the presented design features and technical design of the pyrolysis reactor allow increasing the productivity of the hydrocarbon waste pyrolysis process.

Keywords: technological reactor line; pyrolysis; sectional; low temperature; oil sludge; hydrocarbon waste; research of pyrolysis products; efficiency; deposits of the Krasnoyarsk Territory.

Order this article in the electronic library

UDC 622.279.23/.4 DOI: 10.33285/1999-6934-2021-4(124)-21-24

DEVELOPMENT AND COMMERCIALIZATION OF DOMESTIC COMPLEXES
OF UNDERGROUND EQUIPMENT FOR GAS AND GAS CONDENSATE WELLS
AT THE FIELDS OF PJSC "GAZPROM" (p. 21)

Boris Aleksandrovich Erekhinsky, Cand. of tech. sci.

Association of Scientists and Specialists "Energy and Civil Society"

Moscow, Russian Federation,

e-mail: Bogair1957@yandex.ru

Ruslan Viktorovich Sazontsev, Deputy-Director for Commercial Problems

LLC "NPF Zavod "IZMERON"

St. Petersburg, Russian Federation,

e-mail: sazontcevrv@izmeron.ru

The paper considers the experience of development and production organization of domestic complexes of underground well equipment (CUE) at the fields of the PJSC "Gazprom". The development procedure and the stages of equipment creation starting from the development of Technical Requirements and Design Specifications to the Acceptance testing are given. The basic information on the geological and technical characteristics of the fields of the PJSC "Gazprom", including the fields with the content of carbon dioxide and hydrogen sulfide in the produced well products, is presented. The technical difficulties when developing these fields are considered. The experience of creating CUE at a domestic machine-building enterprise is presented.

Keywords: oil and gas condensate field; hydrogen sulfide; carbon dioxide; underground well equipment; technical requirements; technical task; corrosion resistance.

Order this article in the electronic library

UDC 622.276:658.56 DOI: 10.33285/1999-6934-2021-4(124)-25-31

RELEVANT APPROACHES TO PROVISION AND QUALITY
CONTROL IN MATERIAL-TECHNICAL SUPPORT PROCESSES
FOR THE OIL AND GAS INDUSTRY (p. 25)

Yaroslav Andreevich Ozhigov,

Tatiana Alekseevna Guseva, Cand. of tech. sci.

National University of Oil and Gas "Gubkin University"

Moscow, Russian Federation,

e-mail: ozhigov21@mail.ru, tguseva14@yandex.ru

The paper deals with the problems of quality management concerning material and technical support (MTS) processes in the oil and gas industry and presents the organization chart of the stakeholders’ interaction. The key processes in the framework of the material-technical support of Russian and foreign projects of the oil and gas industry are considered and the main risks associated with these processes are indicated. The supply chain is presented in graphically and the activities performed at each stage are described to ensure and control the quality of the supplied industrial equipment and materials. Moreover, the paper overviews the main instruments and methods of quality control with illustrated information flow of each instrument for the purpose of their application in the system of material-technical support for the oil and gas industry.

Keywords: quality control; material-technical support; technical audit; inspection; expediting; survey control; incoming control; supply chain management.

Order this article in the electronic library

UDC 622.245.44 DOI: 10.33285/1999-6934-2021-4(124)-32-36

STRESS STATE OF SLIPS WHICH WERE IN CONTACT
WITH A CASING STRING (p. 32)

Alesker Samed Gulgazli, Dr. of tech. sci., Professor

Azerbaijan State Oil and Industry University

Baku, Republic Azerbaijan,

e-mail: alesker.gulgezli@mail.ru

Natig Sabir Seyidakhmadov,

Mohsun Ali Shakhnazarov

Azerbaijan State Scientific-Research Institute of Labor Protection and Technical Safety

Baku, Republic Azerbaijan,

e-mail: s.natik@yahoo.com, mohsunsh@gmail.com

During the operation and repair of oil and gas wells, packers are used to separate the annular space of the production and casing strings. Slips play a significant role in packers’ installation and their performance directly affects the oil yield and production safety. In packers, the slips are inserted into the grooves of the slips’ holder and pressed against the cone due to the force of the slips’ holder springs or by grippers, depending on the packer diameter. In mechanical packers, when the pipe column is lowered, the slips are pressed against the borehole wall under the action of springs, and the cone wedges them in the casing string. The process of packer slips loading is divided into two stages. In the first stage, the slips open, and their deformation increases the radius of the upper part curvature. In the second stage of loading, the protrusions of the slips are embedded in the casing string wall from the inside. The paper presents calculations on the slips strength at the first stage of loading. The stress-strain state of the slips is determined and strength calculations are performed. To ensure the strength of the slips at the first stage of their loading, the area of variation in the ratio of the gap between the packer and the casing string to the inner radius of the casing string, as well as the gap between the packer and the casing string to the height of the slips were determined.

Keywords: packer; slip; casing string; alternation; deformation; stress; strength; elasticity.

Order this article in the electronic library

UDC 622.276.43"5" DOI: 10.33285/1999-6934-2021-4(124)-37-44

WATER-FLOODING OPTIMIZATION
BASED ON STREAMLINES SIMULATION (p. 37)

Petr Vadimovich Pyatibratov, Cand. tech. sci., Dean of the Faculty of Oil and Gas Fields Development,

Majed Zammam,

Ekaterina Andreevna Turovskaya

National University of Oil and Gas "Gubkin University"

Moscow, Russian Federation,

e-mail: pyatibratov.p@gubkin.ru

The widespread application of the water-flooding method when developing oil fields is caused by the high efficiency of the processes of maintaining reservoir pressure and displacing oil at relatively low economic costs of implementation. Along with the obvious advantages of water-flooding, the development of heterogeneous complexly-built reservoirs is characterized by uneven recovery of reserves and a low coverage of weakly drained zones.

One of the available options of water-flooding management, characterized by easy implementation and low economic costs, is hydrodynamic methods of oil recovery enhancement, associated, first of all, with changing the operating modes of wells aimed at redistributing filtration flows and involving weakly drained zones in the development. However, the determination of rational wells operation modes for solving this problem is a non-trivial task that has a wide range of solutions.

The authors of the paper, on the basis of modeling the development of an oil field by the streamlines method application, injection efficiency factors for injection wells were determined. Redistribution of the injection allowed increasing the average injection efficiency, reducing the current products water cut and increasing the current and cumulative oil production. When calculating, the restrictions on the bottomhole pressure of injection wells were observed, which should not exceed the hydraulic fracturing pressure and the total volume of the injected water. The increase in cumulative oil production at the end of the forecast period amounted to 18750 m³.

Keywords: water-flooding management; water-flooding optimization; streamline method; injection efficiency.

Order this article in the electronic library

UDC 622.276.64 DOI: 10.33285/1999-6934-2021-4(124)-45-48

ESTIMATION OF THE POSSIBILITY OF OPTIMIZING
THE DEVELOPMENT OF THE BAZHENOVSKY FORMATION FIELDS
BY MEANS OF HYDROPHOBIZING COMPOUNDS (p. 45)

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

Alexander Nikolaevich Protsenko

Northern (Arctic) Federal University named after M.V. Lomonosov

Arkhangelsk, Russian Federation,

e-mail: m.dorfman@narfu.ru, procenkoalexandr99@gmail.com

The problem of the efficiency of hard-to-recover oil reserves development is nowadays very urgent. For example, a certain part of producing wells stock can work below its potential caused by the water saturation increase of the bottomhole formation zone. In turn, the water saturation increase is caused by the negative impact of process fluids that occupy low-permeability intervals of the formation and after the well is put into operation remain stationary, thereby reducing the productivity of the well by lowering the phase permeability of oil. Rather often, this phenomenon can be observed in low-permeable hydrophilic reservoirs, for example, in deposits of fields related to the Bazhenov formation.

The paper studies the effect of water saturation and the nature of bottomhole zone wettability on hydrocarbons inflow. The authors of the paper performed the necessary analytical calculations describing the results of the hydrophobizing compositions impact on the bottomhole zone, based on both field data and the results of laboratory studies. The theoretical basis for calculations is the curves of relative phase permeabilities.

Keywords: hard-to-recover reserves; Bazhenov formation; hydrophobization; curves of relative phase permeabilities; bottom hole treatment; well killing; intensification of inflow; underground workover of wells.

Order this article in the electronic library

UDC 661.721 DOI: 10.33285/1999-6934-2021-4(124)-49-53

METHANOL ODORIZATION UNIT (p. 49)

Vladimir Aleksandrovich Shirobokov,

Viktoria Viktorovna Kulinchenko,

Vadim Aleksandrovich Noskov,

Vyacheslav Mikhailovich Batalkin,

Alexander Konstantinovich Sobyanin

LLC "Gazprom Dobycha Urengoy"

Novy Urengoy, Russian Federation,

e-mail: v.a.shirobokov@gd-urengoy.gazprom.ru, v.v.kulinchenko@gd-urengoy.gazprom.ru,
v.a.noskov@gd-urengoy.gazprom.ru, v.m.batalkin@gd-urengoy.gazprom.ru,
a.k.sobyanin@gd-urengoy.gazprom.ru

The paper discusses the issues of the technical and economic feasibility of changing the technological scheme of methanol odorization and the use of concentrated methanol solution with induline as a dying substance (to avoid misuse of methanol for other purposes).

Keywords: odorization of methanol; kerosene; concentrated methanol solution with indulin; container for preparation of methanol solution with indulin; mixing device; anchor type mixer; screw conveyor with hopper.

Order this article in the electronic library

UDC 622.692.4 DOI: 10.33285/1999-6934-2021-4(124)-54-57

RESEARCH OF USING ANTI-TURBULENT AND DEPRESSOR ADDITIVES
IN PIPELINE TRANSPORT OF HIGH-VISCOUS OILS (p. 54)

Alexander Konstantinovich Nikolaev, Dr. of tech. sci., Professor,

Egor Sergeevich Demenin,

Kristina Igorevna Plotnikova

St. Petersburg Mining University

St. Petersburg, Russian Federation,

e-mail: aleknikol@mail.ru, eg.demenin@yandex.ru, kri28813882_96@mail.ru

There exist a lot of different solutions that facilitate the efficient transportation of high-viscous oils by pipelines. The use of anti-turbulent and depressant additives makes it possible to increase the efficiency of oil pipelines transporting high-viscous oil. This method provides the transportation efficiency increase by reducing the hydraulic resistance and increasing the fluidity of oil.

The work carried out a theoretical study of the existing types of anti-turbulent and depressant additives. This paper presents an experimental study of the effect of the MR 1088 depressant additive produced by LLC "Mirrico" on an oil sample from the Usa – Ukhta main oil pipeline.

Keywords: high-viscous oil; anti-turbulent additive; hydraulic resistance; depressant additive; pour point.

Order this article in the electronic library

UDC 628.517.2 DOI: 10.33285/1999-6934-2021-4(124)-58-60

RESULTS OF USING SOUND-INSULATING COVERS
FOR SHUT-OFF AND CONTROL VALVES (p. 58)

Leonid Isaakovich Sokolinsky, Cand. of tech. sci., Professor

National University of Oil and Gas "Gubkin University"

Moscow, Russian Federation,

e-mail: lis3343@gmail.com

Nikolay Vasilievich Volodin

LLC "K-Flex"

Moscow, Russian Federation

Anna Vladimirovna Sidorina

Scientific-Research Institute of Construction Physics of the Russian Academy of Architecture and Construction Sciences

Moscow, Russian Federation

The paper presents the results of field tests of soundproof covers for shut-off and control valves (SCV) of connection piping (CP) of compressor station (CS) blowers. It is known that by now the sound-insulating coatings of compressor station aboveground pipelines of PJSC "Gazprom" are used practically everywhere, regardless of the characteristics of CP and blowers characteristics. As a rule, only pipes are insulated, and the SCV remain "bare". At the same time, sound levels near insulated pipe sections usually exceed 90 dBA and are maximal at the points near non-insulated valves. Tests of sound-insulating coatings of CP, both single-layer and multi-layer, gave an ambiguous assessment of their acoustic properties and impact on the technical condition of insulated pipelines. It should be noted that it is at the cranes that one of the positions of the equipment bypass route is assigned by the CS specialists and the results of noise measurements are included in the assessment of its impact on the CS personnel according to sanitary standards. Therefore, the use of soundproof covers for shut-off and control valves (SCV) of technological pipelines of centrifugal blowers make a certain sense.

Keywords: pipeline; gas pumping unit; noise; spectrum; octave; sound level; acoustic pressure; geometric mean frequency.

Order this article in the electronic library

UDC 624.139.62 DOI: 10.33285/1999-6934-2021-4(124)-61-69

METHODOLOGY OF THERMAL CALCULATION OF THE FIELD MAIN PIPELINE
WHEN PUMPING OIL AND PETROLEUM PRODUCTS IN NON-ISOTHERMAL
CONDITIONS (p. 61)

Ksenia Maksimovna Plotnikova,

Vladimir Vasilievich Sereda, Dr. of tech. sci., Professor,

Alexander Vyacheslavovich Elkin, Cand. of tech. sci.,

Lazar Valerievich Seoev

FAU "25 State Research Institute of Chemotology of the RF Ministry of Defense"

Moscow, Russian Federation

Oil and oil products pumping through fields main pipelines in non-isothermal conditions is analyzed. The data on the existing thermal calculations of main pipelines were generalized and a method was developed for the thermal calculation of the field main pipeline when pumping oil and oil products in non-isothermal conditions in order to determine the pumping parameters that could be provided taking into account the influence of environmental temperature factors, total head loss, temperature distribution over its length, with consideration for the thermal interaction of the pipeline with the external environment, depending on climatic conditions and the specifics of the method of a pipeline on-land construction.

Keywords: field main pipeline; thermal calculation; heat transfer; oil; petroleum products.

Order this article in the electronic library

UDC 622.692.4.076:620.197.6-036.7 DOI: 10.33285/1999-6934-2021-4(124)-70-74

ESTIMATION OF THE EFFICIENCY
OF THE DEVELOPED PROTECTIVE COATING FOR METAL STRUCTURES
WITH INCREASED CORROSION AND ICE RESISTANCE (p. 70)

Zoya Vasilievna Khabarova

ITC LLC "Gazprom transgaz Ukhta"

Ukhta, Russian Federation,

e-mail: zoya_morozowa@mail.ru

Tatiana Anatolievna Grigorieva,

Evgeny Aleksandrovich Khabarov

Ukhta State Technical University

Ukhta, Russian Federation,

e-mail: tgrigoryeva@ugtu.net, habarovugtu@mail.ru

Research has been carried out to estimate the effectiveness of a composite protective coating of our own design for pipelines and metal structures, made like a two-layer structure with different layers functionality. The assessment of the conformity of the coating with the specified properties was carried out: high corrosion resistance, resistance to icing and abrasion, high adhesion to the protected material, manufacturability of application.

Keywords: protective coating; corrosion resistance; icing; composite material; epoxy polymers; contact angle; adhesion.

Order this article in the electronic library

UDC 624.139.62 DOI: 10.33285/1999-6934-2021-4(124)-75-80

STUDY OF THE PERMAFROST TEMPERATURE MODE OF OIL AND GAS
OBJECTS FOUNDATION EQUIPPED BY SEASONALLY OPERATING
COOLING DEVICES (p. 75)

Gennady Germanovich Vasiliev, Dr. of tech. sci., Professor,

Igor Aleksandrovich Leonovich, Cand. of tech. sci., associate professor

National University of Oil and Gas "Gubkin University"

Moscow, Russian Federation

Anton Aleksandrovich Dzhalyabov, General Director

LLC "Gazprom dobycha Noyabrsk"

Noyabrsk, Russian Federation

The paper analyzes the permafrost temperature mode, which is used as a foundation at one of the objects of the oil and gas complex beyond the Arctic Circle. The results of the temperatures dynamics study based on the thermometric control results during geotechnical monitoring are presented. It is shown that in recent years the frozen soil has demonstrated a clearly expressed tendency to thawing, despite the use of seasonally operating cooling devices.

The results of the climatic mode analysis in the territory of the object location are presented, based on the calculations of the number of days with low temperatures. It is shown that over the past 30 years, a warming process has been observed, which is one of the most important factors, proving the change of permafrost temperature mode, even in the conditions of maintaining the stable operation of the object's control system.

Keywords: permafrost; thawing; a seasonally operating cooling device; permafrost temperature model.

Order this article in the electronic library

NATIONAL UNIVERSITY OF OIL AND GAS "GUBKIN UNIVERSITY"

Main page of journal