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ISSN 1999-6934 Scientific-technical journal published since 2001 June 2020 ¹ 3(117) 6 issues per year
CONTENÒS |
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MACHINERY AND EQUIPMENT |
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Frankov M.A. Development and research of new labyrinth pumps with hybrid rotor (p. 27‑30) |
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Serikov D.Yu. Improvement of bearing assembly of a rolling-cutter drill bit (p. 31‑34) |
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Bogomolov R.M. Improvement of cutting structures of a single-cone drill-bit (p. 35‑38) |
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STANDARDIZATION AND QUALITY MANAGEMENT |
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DEVELOPMENT OF OIL AND GAS FIELDS |
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PIPELINE TRANSPORT |
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JUBILEE DATES |
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The 55th anniversary since the birthday of D.Yu. Serikov (p. 95‑96) |
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Information on the articles |
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UDC 678.01 DOI: 10.33285/1999-6934-2020-3(117)-8-13
DAMPING
PROPERTIES OF TITANIUM NICKELIDE AS ONE OF THE KEY FEATURES
Alexander Konstantinovich Prygaev, Cand. of tech. sci., Professor, Dean of the Faculty of Mechanical Engineering, Yury Sergeevich Dubinov, Cand. of tech. sci., associate professor 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 Oil and Gas Equipment Repair, Robert Linarovich Baitemirov, post-graduate student 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
National University of Oil and Gas "Gubkin University" 65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail:
fim@gubkin.ru, dubinovys@gmail.com, elaguina@mail.ru,
robert-baitemirov@mail.ru,
The paper presents a method of obtaining titanium nickelide damping properties and the mechanism of its manifestation; a number of factors are identified that have a major influence on the manifestation and management of this property when designing the equipment, operating in difficult loading conditions, for example, in the oil and gas industry. The conducted analysis also showed that when designing parts, elements and assemblies manufactured from titanium nickelide, it is necessary to take into account its changed technological properties after giving, for example, the properties of super-elasticity, its corrosion resistance to a specific composition of the medium, for example, due to its weak resistance to atomic hydrogen. But at the same time, if the presented factors are correctly taken into account, the objects made of titanium nickelide will be more reliable than those made from other materials as well as due to its ability to adapt to changing operating parameters, the equipment will prolong the operational life-time between failures.
Keywords: titanium nickelide; damping properties of titanium nickelide; intellectual material; energy-efficient equipment; factors affecting the manifestation of damping properties of titanium nickelide.
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UDC 622.276.53.054.23 DOI: 10.33285/1999-6934-2020-3(117)-14-20
ON
THE ISSUE OF PERFORMANCE CHARACTERISTICS DEGRADATION
Igor Nikolaevich Gerasimov, leading engineer, Department of Machinery and Equipment of Oil and Gas Industry, Alexey Valentinovich Degovtsov, Cand. of tech. sci., associate professor, Department of Machinery and Equipment of Oil and Gas Industry, Temir Ruslanovich Dolov, Cand. of tech. sci., associate professor, Department of Machinery and Equipment of Oil and Gas Industry, Vladimir Nikolaevich Ivanovskiy, Dr. of tech. sci., Professor, Head of the Department of Machinery and Equipment of Oil and Gas Industry, Ivan Vladimirovich Kuznetsov, engineer, 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, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail:
igorg.conik@gmail.com, degovtsov.aleksey@yandex.ru, dolovtemir@yandex.ru,
Oil production intensification is accompanied by complicated well operation conditions. Today, the most widespread problem in the operation of electric submersible pumps (ESP) is mechanical impurities, salt depositions, corrosion, free gas, complex inclinometry, asphalt-resin-paraffin deposits, and high-viscosity oil emulsions. These negative factors reduce the efficiency of downhole pumping units due to degradation of their performance characteristics. To ensure the efficiency of oil production in these conditions, it is necessary to develop and apply clear recommendations based on the knowledge of the laws of these characteristics degradation. To determine the laws of ESP degradation characteristics and to develop predictive analysis grounds of oil well pumping units in the complicated conditions is possible on the basis of theoretical and experimental studies, analysis of field data and data on downhole oil production equipment. As a result of this work, the main regularities of characteristics degradation of low-and medium-rate pumping units at some oil production sites were determined. This made it possible to predictively analyze and determine the operating life-time before the parametric failure of the ESP in different operating conditions.
Keywords: unit of an electric-driven vane (centrifugal) pump; pump characteristic; degradation of the characteristic; predictive analysis; operating life-time to failure; parametric failure.
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UDC 622.276.054.22 DOI: 10.33285/1999-6934-2020-3(117)-21-26
DETERMINATION
OF THE TECHNICAL STATE
Nataliya Nikolaevna Sofina, Director
LLC "NPP "ROS" 70, Permskaya str., Perm, 614000, Perm region, Russian Federation
Dmitry Igorevich Shishlyannikov, Cand. of tech. sci., associate professor, Sergey Alekseevich Frolov, post-graduate student, Sergey Nikolaevich Krivoshchekov, Cand. of tech. sci., associate professor
Perm National Research Polytechnic University 29, Komsomolsky prosp., Perm, 614990, Perm region, Russian Federation, e-mail: dish844@gmail.com
The paper considers some specific features of oil wells operation using sucker-rod oil-well pumping units. The relevance of the development and introduction of automated software-recording systems for monitoring the parameters of work and diagnosing pumping units of oil fields is substantiated. The statistical data on emergency failures of balancing beam units of sucker-rod oil wells pumps (SRP) and the causes of their occurrence are analyzed. The prospects of applying the method of instrument control of operation parameters and assessing the technical state of sucker-rod pumping units based on the analysis of the magnitude and nature of changes in the loads of drive electric motors, determined by recording instantaneous values of power consumption, have been proved. The design and operational principle of the "AKD-SK" software-registering complex manufactured by LLC "NPP "ROS" (Perm) are considered. The main provisions of the methodology for analyzing wattmetrograms of drive motors of sucker-rod oil-well pumping units are considered, the nature of the manifestation of the main defects of submersible pumps and balancing beam units is described.
Keywords: sucker-rod oil-well pumping unit; wattmetrography; "AKD-SK" software-recording complex; diagnostics; balancing; emergency failures.
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UDC 622.276.53 DOI: 10.33285/1999-6934-2020-3(117)-27-30
DEVELOPMENT
AND RESEARCH OF NEW LABYRINTH PUMPS
Mikhail Aleksandrovich Frankov, post-graduate student of the Department of Oil and Gas Machinery
National University of Oil and Gas "Gubkin University" 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: hameleon089@gmail.com
Oil and gas production in difficult conditions remains an urgent issue, one of the solutions of which is the development of new technical solutions. In this regard, it seems promising to develop new labyrinth pumps with a hybrid rotor, characterized by a small mass of the rotor and the relative simplicity of its design. In National University of Oil and Gas "Gubkin University" the work is underway to research new labyrinth pumps. The objective of the research is to develop a new design of a high-speed labyrinth pump, capable of operation at a high concentration of solids in the flow. Using modern additive technologies and laser cutting of sheet blanks, several micromodels of new pumps with different rotor designs were manufactured. In the course of the physical experiments, their pressure characteristics were obtained and a comparison was made with the indications of a standard screw rotor. An experimental sample of a labyrinth pump with a hybrid rotor is designed and manufactured. The data obtained during its first tests confirm the prospects of the development and research of these hydraulic machines. In future, a number of studies are planned both with a laboratory experimental sample and with new micromodels, including tests at high rotor speeds and with a high concentration of solids in the flow.
Keywords: production in difficult conditions; labyrinth pump; hybrid rotor; additive technology; laser cutting; physical experiment; high viscosity oil; high speed pump.
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UDC 622.24.051 DOI: 10.33285/1999-6934-2020-3(117)-31-34
IMPROVEMENT
OF BEARING ASSEMBLY
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 the work aimed at further improving bearing assemblies of rolling-cutter drill bits are presented. On the basis of the analysis of operational conditions and the main reasons for the loss of operability of bearing assemblies of rolling-cutter drill bits, a special design of bearing assemblies was developed. Equipping of rolling-cutter drill bits with bearing assemblies of this design will, on the one hand, increase the operational life of bearing assemblies and the tool in the whole by eliminating jamming of liners, and, on the other hand, by simplifying their design compared to existing serial analogues, thus reducing the cost of manufacturing of rolling-cutter drill bits.
Keywords: rolling-cuter drill bit; bearing assembly; friction surfaces; drilling bit leg axle.
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UDC 622.24.051 DOI: 10.33285/1999-6934-2020-3(117)-35-38
IMPROVEMENT
OF CUTTING STRUCTURES
Rodion Mikhailovich Bogomolov, Dr. of tech. sci., Professor
Samara State Technical University 244, Molodogvardeiskaya str., Samara, 443100, Russian Federation
The paper presents the results of research on the study of the operation and development of a new design of cutting structures of a single-cone drill-bits. Recommendations are given on the creation of toothed-type cutting structures of single-cone drill-bits, providing an increase of the main operational indicators of this type of a drilling tool. The paper also presents the analysis of the impact of the shape, size of the rock-cutting elements, the dynamics of the rock loading when it encounters teeth of various configurations, as well as other factors: the specific load under the cutting edges and its role in ensuring a high mechanical drilling speed and general performance indicators of a single-cone drill bit, initial materials for its manufacture, and the nature of the interaction of the drill bit teeth with the well bottom rock on the intensity of the well bottom destruction.
Keywords: single-cone drilling bit; rock destroying elements; mechanical drilling speed; headway per bit.
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UDC 621.95/96.04(035) DOI: 10.33285/1999-6934-2020-3(117)-39-43
WAYS
OF IMPROVING THE INTEGRATED SYSTEM AUTOMATION
Oleg Aleksandrovich Novikov, Dr. of tech. sci., Professor, leading researcher
National University of Oil and Gas "Gubkin University" 65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: NovikTexnolog@Yandex.ru
Blagonravov Institute of Machine Science of the Russian Academy of Sciences 4, Maly Kharitonievsky per., Moscow, 101000, Russian Federation
Currently, various information technologies are used for technical preparation of production to perform design work. A system of complex automation of technological processes design (SATPD), which operates under the MS DOS OS, was developed by National University of Oil and Gas "Gubkin University" (the Department of Standardization, Certification and Quality Management of Oil and Gas Equipment Production) to improve operational capacity at the stage of technological preparation of production, which was introduced into production at various machine engineering companies an educational processes of a number of higher educational schools. The paper solves the problem of determining the ways of further development of SATPD, caused by the necessity of adapting it to the operational conditions under OC MS Windows. This problem is solved on the basis of a retrospective analysis of the accepted approaches to tools development in the SATPD previous versions. As a result of the analysis, it is decided to create a new version of SATPD based on the modular approach. As a module, the system assumes a tool (software of the module is being created by the system developers), allowing the user of the module (technologist of technological Bureau of the Department of the chief technologist) in the "dialogue" mode with the tool to hold a private description of the design problem, the result of which is the program in a specialized programming language system. The description of the module at the external and conceptual levels corresponds to the description of project tasks in the previous versions, and the software and interface of the new SATPD version is adapted to OS MS Windows. In the new version of SATPD, it was decided to develop a module that the user’s work with it in the system's technology editor will allow formation of the operations of the projected process.
Keywords: technological preparation of production; technological operations; computer-aided design system; system of complex automation of technological preparation of production; tools; software; specialized programming language.
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UDC 622.24.002.5:681.8-026.572 DOI: 10.33285/1999-6934-2020-3(117)-44-51
ULTRASONIC
TESTING ASPECTS
Andrey Anatolievich Sel'skij, Cand. of tech. sci.
Private Vocational Educational Institution Research-Training Centre "Regiontechservice" 38, Poltavskaya str., Krasnoyarsk, 660012, Russian Federation, e-mail: nondist@mail.ru
Viktor Andreevich Sel'skij
LLC "Consultancy within Engineering "Industry" 30, office 2-08, Gaidashovka str., Krasnoyarsk, 660118, Russian Federation, e-mail: nondist@mail.ru
Sergey Ivanovich Vasil'ev, Cand. of tech. sci, Professor
Siberian Federal University 79, Svobodny prosp., Krasnoyarsk, 660041, Russian Federation, e-mail: s-vasilev1@yandex.ru
The paper considers nondestructive examination in the oil and gas industry. The results of ultrasonic examination of oil and gas industry equipment carried out without paint coat removing are presented. The obtained results allow estimating the risk of error and determining its value. The received recommendations are of practical interest and relevant for the examination of welded joints having thickness of up to 8 mm with paint coating and inclined piezoelectric thickness transducers at frequency of 5,0 MHz. The authors thus recommend making sensitivity correction provided there is paint coating the value of which depends on the paint layer thickness. Recommendations are received to increase sensitivity for threshold values of paint coating thicknesses when operating at different transducer frequencies. Frequencies are identified where sensitivity correction is not required regardless of the thickness of the paint coating. Corrections are justified when measuring metal thickness through the paint layer with the help of piezoelectric thickness gauge operating on piezoelectric principle. It was proved that no correction is required when measuring wall thickness using an electromagnetic acoustic thickness gauge for δne ≤ 0,4 mm paint layer.
Keywords: nondestructive examination; oil and gas industry; safety; equipment; paint coat; ultrasonic testing; thickness measurement.
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UDC 622.276.5.05 DOI: 10.33285/1999-6934-2020-3(117)-52-55
ANALYSIS
OF WAYS TO INCREASE THE EFFICIENCY
Diana Ilgizovna Kanafeeva, post-graduate student, Vitaly Anatolievich Yasashin, Dr. of tech. sci., Professor, Grigory Vakhovich Radaev, undergraduate
National University of Oil and Gas "Gubkin University" 65, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: yasashin@rambler.ru
Competitiveness improvement of the national oil refining industry is one of the main priorities of the Russian economy development. The quality of the equipment used in these processes is paid prior attention. Secondary processes play an important role in the technological cycle of petroleum products production. The paper analyzes the main processes of oil refining, focuses on the secondary processes of refining, in particular on the catalytic cracking units and the unit of getting methyl-tret-butyl ether and oligomerizate (MTBE&O). The analysis of normative documentation allowed development of technical solutions that improve the quality of the resulting product, thus increasing its competitiveness in the world market.
Keywords: refining; quality; standard; MTBE&O unit.
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UDC 621.646.1 DOI: 10.33285/1999-6934-2020-3(117)-56-59
RISK
ASSESSMENT OF DIFFERENCES IN REGULATORY DOCUMENTS
Vsevolod Yakovlevich Kershenbaum, Dr. of tech. sci., Professor, Head of the Department of Standardization, Certification and Quality Control of Oil and Gas Equipment Production, Tatiyana Alekseevna Guseva, Cand. of tech. sci., associate professor of the Department of Standardization, Certification and Quality Control of Oil and Gas Equipment Production, Ivan Andreevich Shchipakov, post-graduate student of the Department of Standardization, Certification and Quality Control of Oil and Gas Equipment Production, Tatiyana Ivanovna Gontarenko, post-graduate student of the Department of Standardization, Certification and Quality Control of Oil and Gas Equipment Production
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, schipakovia@mail.ru, gontarenko_ti@rambler.ru
The paper discusses the methodology for assessing the risks of the identified differences in the provisions of domestic and foreign regulatory documents on the valves, which impose requirements on valves’ safety and quality. As a result of the study, the results of the primary risk assessment, the proposed measures to reduce the risk of ignoring the detected differences in requirements and the assessment of residual risks for ball valves are presented.
Keywords: valves; pipeline valves; standards; standardization documents; risk assessment.
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UDC 622.276.5.05 DOI: 10.33285/1999-6934-2020-3(117)-60-64
A
METHODOLOGY OF AN INFORMATION DESCRIPTION APPROACH
Denis Vladimirovich Gololobov, senior lecturer
National University of Oil and Gas "Gubkin University" 65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation, e-mail: dgololobov@mail.ru
The paper considers an approach to the informational description of the technological preparation for the production of oil and gas industry products to solve the problems of automation of designing mechanical treatment technological operations. Formalization of tasks of technological operations designing allows breaking down the general designing tasks into separate ones as part of the formation of a technological operation and providing automation of individual local tasks. The automation problems solution is associated with the refusal to store information in the form of a database and the refusal to work with data base management systems. This approach allows reduction of software use, produced abroad, when solving problems of technologies development and technological documents formation. These approaches make it possible to reduce import dependence on foreign software and self-costs of production processes.
Keywords: import substitution; import dependence; technological preparation of production; technological documentation; mechanical treatment; cutting modes; design automation; machine treatment equipment; technological system.
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UDC 622.276.8+622.692.1 DOI: 10.33285/1999-6934-2020-3(117)-65-69
IMPROVEMENT
OF THE SEPARATION PROCESS
Marat Yakhievich Khabibullin, Cand. of tech. sci., associate professor of the Department "Oilfield machinery and equipment"
Ufa State Petroleum Technological University, a branch in Oktyabrsky 54a, Devonskaya str., Oktyabrsky, 452607, Republic of Bashkortostan, Russian Federation, e-mail: m-hab@mail.ru
Separation of liquid heterogeneous systems in the oil and gas industry requires use of various types of designs of sedimentation tanks, separators, hydro-cyclones, etc. the operational principle of which is based on gravitational and centrifugal separation of inhomogeneous masses of various densities. That’s why experimental studies of intra-rotor flows have become very important at present. To provide the best hydrodynamic conditions for formation fluid separation in a hydro-cyclone and to prevent clogging of the discharge opening, an apparatus that contains only the cylindrical part of the housing is proposed. A feature of the proposed design is the fact that the optimal ratio L/D = 3...5, all other ratios available, used in the calculation of the characteristics, is equal to the ratios of characteristics in the known hydro-cyclones. This length of the hydro-cyclone provides the conditions for the effective separation of the formation fluid and the withdrawal of the condensed fraction through the discharge opening. The obtained results of studies performed on a real product at pressure and flow rate, corresponding to the production ones, made it possible to design and manufacture an industrial sample of the apparatus. Experimental data can be used to calculate similar hydro-cyclones intended for use in other mixtures.
Keywords: separator; hydro-cyclone; volume; acceleration; plate; rotor.
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UDC 621.644.073 DOI: 10.33285/1999-6934-2020-3(117)-70-72
A
METHOD FOR REGULATING THE PROCESS
Boris Leonidovich Zhitomirsky, Cand. of tech. sci., General Director, Professor of the Department "Thermodynamics and Heating Engines"
JSC "Gazprom orgenergogaz" 11, Luganskaya str., Moscow, 115304, Russian Federation, e-mail: zhitomirsky@oeg.gazprom.ru
National University of Oil and Gas "Gubkin University" 65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation
The paper presents the results of research on the methods of controlling the technological process of impact on the soil. A frequency energy converter is considered as a source of regulation of thermo-mechanical low-temperature drilling modes in automatic control systems. Frequency converter technical characteristics are compatible with the generator, its drive – gas turbine drive and telemetry data (TMD), is used to provide adjustment of the frequency of the TMD mechanical impact on the ground in the heat–impact cycle, in order to optimize the process of the ground development efficiency and the reliable protection of the tool from mechanical overload as well as reduces wave phenomena effect from the heat flow.
Keywords: energy efficiency; thermo-mechanical drilling equipment; gas turbine engine; frequency energy converter.
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UDC 620.197.5:621.316.995 DOI: 10.33285/1999-6934-2020-3(117)-73-78
DETERMINATION
OF AN EFFECTIVE RADIUS OF VERTICAL GROUND
Ekaterina Vladimirovna Isupova, Cand. of tech. sci., associate professor of the Department of Design and Operation of trunk gas and oil pipelines, Ruslan Viktorovich Aginey, Dr. of tech. sci., Professor, Rector, Elena Evgenievna Yavorskaya, senior lecturer of the Department of Design and Operation of trunk gas and oil pipelines
FSBEI HE "Ukhta State Technical University" 13, Pervomaiskaya str., Ukhta, 169300, Komi Republic, Russian Federation, e-mail: eisupova@ugtu.net, eyavorskaya@ugtu.net
The paper presents the results of the research aimed at determination of the minimum required distance from the grounding electrodes axis in order to develop measures that provide limiting the negative effect of protective grounding elements on current distribution conditions in the electrochemical corrosion protection system of underground oil and gas pipelines and equipment. It is shown that the existing methods of the soils properties assessment do not take into account the actual distribution of the soils properties and also do not allow assessing the influence of their parameters heterogeneity when designing and operating anticorrosion protection systems of pipelines and related systems working in industrial sites. There are proposed mathematical expressions for determining the distance from a vertical ground electrode at which the short circuit current arising in emergency situations when draining from electrical installations ceases to affect the protected structures. To provide a certain set of typical initial data, there was obtained a nomogram, which allows determination of the current spreading zone from vertical ground electrodes during a short circuit.
Keywords: electrochemical corrosion protection; oil and gas pipeline system of industrial sites; grounding of power plants; shielding of cathodic protection currents; current spreading zone from the vertical ground electrode.
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UDC 620.19 DOI: 10.33285/1999-6934-2020-3(117)-79-81
DIAGNOSTIC
MAINTENANCE
Alexey Petrovich Zavyalov, Cand. of tech. sci., associate professor of the Department "Equipment of Oil and Gas Processing", chief technology engineer
National University of Oil and Gas "Gubkin University" 65, bld. 1, Leninsky prosp., Moscow, 119991, Russian Federation
ITC "Orgtechdiagnostika" JSC "Gazprom orgenergogaz" 11, Luganskaya str., Moscow, 115304, Russian Federation, e-mail: zavyalovap@yandex.ru
The paper analyzes modern approaches to the organization of a diagnostic maintenance system of oil and gas facilities’ equipment and pipelines. Recent improvement of the approaches to repair-technical service organization, including pipeline transportation system, in various sectors of the oil and gas industry, including the introduction of a risk-based approach to operation, requires changes in approaches to technical diagnostics. The paper considers the key principles of management decision-making in the framework of a risk-based approach to the operation of industrial facilities and based on the analysis of these principles identifies the key features of the organization of the diagnostic service system.
Keywords: equipment; pipeline; diagnostic service system; reliability; repair; diagnostics.
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UDC 622.692.23 DOI: 10.33285/1999-6934-2020-3(117)-82-86
VAPOR
CAPTURE SYSTEM WHEN RECEIVING AND (The RF patent for Invention 2699749 dated 09.09.2019) (p. 82)
Yury Alekseevich Matveev, Cand. of military sci., Leader of the Group of Civil Defense and Protection against emergency situations
LLC "Ulyanovsk Auto Plant" 92, Moskovskoye shosse, Ulyanovsk, 432034, Russian Federation, e-mail: bgd020762@mail.ru
Andrey Yurievich Bogdanov, Cand. of phys.-math. sci., associate professor, Department of Applied Mathematics
Ulyanovsk National University 42, Lev Tolstoy str., Ulyanovsk, 432017, Russian Federation, e-mail: bogdanovayu@mail.ru
Alexander Vladimirovich Kuznetsov, Cand. of pedagogical sci., Head of the military training center
Bugaev Ulyanovsk Institute of Civil Aviation 8/8, Mozhaisky str., Ulyanovsk, 432071, Russian Federation, e-mail: vcuvauga@mail.ru
The Invention refers to the devices for petroleum products vapor recovery. The unit allows oil products vapor recovery in the tanks by reducing the temperature in the heat-exchangers and absorption by the absorbent. The Invention consists of a steam pipe, a two-section tank, a pressure gauge, a receiving device, a shaft, an absorbent, a refrigeration unit, a filter-absorber.
Keywords: tank; steam pipe; temperature; vapors of petroleum products; refrigeration unit; absorbent; vapor recovery; pressure gauge.
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UDC 622.279.72 DOI: 10.33285/1999-6934-2020-3(117)-87-94
THE
IMPORTANCE OF SELECTED EQUATION OF STATE IN HYSYS
Vladimir Vladimirovich Kholod, post-graduate student, Yury Pavlovich Yasyan, Dr. of tech. sci., Professor, Head of the Department
Kuban State Technological University 2, Moskovskaya str., Krasnodar, 350042, Krasnodar area, Russian Federation, e-mail: kholodvv@outlook.com
Àlexander Àleksandrovich Zhivaev, expert
JSC "NIPIGAS" 118, Krasnaya str., Krasnodar, 350000, Krasnodar area, Russian Federation
The article considers a mathematical model of low-temperature separation designed to extract heavy hydrocarbons from gas. To increase the degree of recovery (increase the yield of liquid hydrocarbons) it is necessary to reduce the temperature of the processed gas. However the limiting factor for increasing the depth of cooling of the processed gas is the temperature of its hydrate formation. When the gas temperature drops to minus 10 °C a hydrate formation inhibitor – methanol – is supplied to the "protected" area (in front of the refrigeration equipment) to prevent formation of crystalline hydrates. Practical interest is to compare the results of calculating the required amount (concentration) of the hydrate inhibitor (methanol) in the treated gas to inhibit hydrate formation using various thermodynamic packages and equations of state (EOS) recommended by the mathematical simulator of chemical and technological processes Aspen HYSYS: Peng – Robinson, Soav – Redlich – Kwong and CPA. In order to ensure the safe operation of the entire unit, special attention is paid to the determination of methanol removal from the gas, hydrocarbon and water phases using the above mentioned thermodynamic packages.
Keywords: mathematical simulation; Aspen HYSYS; recovery rate; chemical processing systems; equation of state; low-temperature separation; gas hydrates; hydrate formation temperature; phase equilibrium; methanol.
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THE 55TH ANNIVERSARY SINCE THE BIRTHDAY
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NATIONAL UNIVERSITY OF OIL AND GAS "GUBKIN UNIVERSITY" |