ISSN 1999-6934

Scientific-technical journal

EQUIPMENT AND TECHNOLOGIES

FOR OIL AND GAS COMPLEX

                                                                                                  published since 2001

October 2019                              ¹ 5(113)                         6 issues per year

 

CONTENÒS

 

MACHINERY AND EQUIPMENT

 

Ivanovsky V.N., Orlova E.A., Degovtsov A.V., Sabirov A.A., Lukin M.K. Stressed state research of structural elements of a cable rod termination in "SolidWorks" program complex (p. 5‑11)

 

Khuzin R.R. Improvement of construction of downhole sucker-rod pumps for production of high-viscous oil in the fields with hard-to-recover reserves (HRR) (p. 12‑15)

 

Dolov T.R., Donskoy Yu.A. The influence of the quality of ESP stages manufacturing on their energy characteristics (p. 16‑19)

 

Musinskij A.N., Gizatullin R.R., Ostrovsky V.G., Peshñherenko S.N. Research of the effect of gas separators working parameters on operational properties (p. 20‑26)

 

Yanturin A.Sh., Yanturin R.A., Akhmetzyanov I.I., Bulyukova F.Z. On the effect of a periodic occurrence of a rods column compressed part on a well operation (p. 27‑32)

 

Khostikoev M.Z., Ivanov A.A. Quality, microstructure, microhardness of threads surface layer processed by rolling (p. 33‑36)

 

Epifanov Yu.G. An analysis of the effective functioning of the formation – well – pump system (p. 37‑41)

 

Boyko P.F., Titievsky E.M., Timiryazev V.A., Mnatsakanyan V.U., Khostikoev M.Z. Provision of operational life-time period of crushers liners by applying new technologies of their manufacturing and wear-out diagnosing (p. 42‑47)

 

DEVELOPMENT OF OIL AND GAS WELLS

 

Gavrilenko A.I., Frolov V.V., Tkachev D.V., Baranova N.O. The technology updating of directional acid impact on a reservoir and evaluation of its application using the example of the fields of RUE "Belorusneft" Production association" (p. 48‑51)

 

Ismagilov R.N., Frolov A.A., Tipugin A.A., Burmistrov N.A., Serebryanskiy S.A. Development of joint operation schemes of complex gas treatment plant-13 (CGTP-13) and CGTP-15 (p. 52‑55)

 

NEW METHODS AND TECHNOLOGIES

 

Zavyalov A.P. A concept of a technological complex to be used for processing associated petroleum gas to develop oil deposits on the Russian arctic shelf (p. 56‑61)

 

Lisenkov A.N. Analysis of the dependence of the degree of natural gas purification on the size of pollutant particles of impurities (p. 62‑63)

 

Rasulov S.R., Kelbaliev G.I. Oil emulsions rheology (p. 64‑69)

 

 

Information on the articles

 

UDC 622.276.53.054.4          DOI: 10.33285/1999-6934-2019-5(113)-5-11

 

STRESSED STATE RESEARCH
OF STRUCTURAL ELEMENTS OF A CABLE ROD TERMINATION
IN "SOLIDWORKS" PROGRAM COMPLEX (p. 5)

 

Vladimir Nikolaevich Ivanovsky, Dr. of tech. sci., Professor, academician of RANS, Head of the Department,

Ekaterina Alexeevna Orlova, engineer,

Alexey Valentinovich Degovtsov, Cand. of tech. sci., assistant professor,

Albert Azgarovich Sabirov, Cand. of tech. sci., assistant professor

 

National University of Oil and Gas "Gubkin University"

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

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

 

Mikhail Konstantinovich Lukin, manager

 

PJSC "Severstal"

2, Klara Tsetkin str., Moscow, 127299, Russian Federation,

e-mail: mk.lukin@severstalmetiz.com

 

The use of downhole pumping unit with the cable rod in small-diameter sidetracked holes provides essential reduction of breakage of rods and "wiper" of a tubing string. The unit consists of a beam pump, sucker rods, a cable rod, set in the place with intensive curvature's rate and a specially designed sucker-rod pump. The cable rod consists of a rope of a special enclosed design with a diameter of 20 mm with curly Z- and X-shaped wires.

Cable fittings are an important element of the cable rod. They provide reliable connection the cable with a sucker-rod string and the uniform loading of all wire ropes. As a result of the work, a 3D model of cable rod terminations was built in "Solidworks" software package, strength calculations of the most heavy-loaded parts of the equipment are carried out and possibilities of the equipment structures improvement are revealed.

 

Keywords: downhole pump unit with the cable rod; cable termination; strength calculation; "SolidWorks" software package; design optimization.

 

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UDC 622.276.53.054.22          DOI: 10.33285/1999-6934-2019-5(113)-12-15

 

IMPROVEMENT OF CONSTRUCTION
OF DOWNHOLE SUCKER-ROD PUMPS FOR PRODUCTION OF HIGH-VISCOUS OIL
IN THE FIELDS WITH HARD-TO-RECOVER RESERVES (HRR) (p. 12)

 

Rinat Raisovich Huzin, Dr. of tech. sci., assistant professor, General Director

 

LLC "Karbon-Oil"

25, Surgutskaya str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

e-mail: karbon@tatais.ru

 

Most small fields with hard-to-recover reserves in the Republic of Tatarstan are characterized by high viscosity values. Reservoir oil viscosity significantly complicates conditions of oil production in these fields. The bulk of the operational wells fund in these fields is operated using downhole sucker-rod pumps. According to the data available, average runtime of downhole sucker-rod pumps that are used for developing fields with high-viscous oil (> 30 cP) is 25…30 % lower than this indicator in fields with ordinary oil. In order to improve the pump operational characteristics in these specific conditions, a downhole sucker-rod pump for high-viscous oil production was developed and is now presented in this paper.

 

Keywords: downhole sucker-rod pump; hard-to-recover reserves; efficiency coefficient; high viscous oil.

 

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UDC 622.276.53.054.23:621.67-83          DOI: 10.33285/1999-6934-2019-5(113)-16-19

 

THE INFLUENCE OF THE QUALITY OF ESP STAGES MANUFACTURING
ON THEIR ENERGY CHARACTERISTICS (p. 16)

 

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

Yury Andreevich Donskoy, Cand of tech. sci., assistant professor of the 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

 

The article highlights quality influence when manufacturing ESP stages on ESP characteristics change associated with it.

The currently applied methods for ESP stages manufacture: powder metallurgy, sand casting, investment casting, milling, welding (soldering) of components, casting from polymeric materials provide different geometry and surface quality. One of the main parameters of the ESP stages quality is the flow-pressure energy characteristics, accuracy of ensuring the specified geometrical dimensions, roughness.

The use of any manufacturing technology, in turn, determines the possibility of ensuring the accuracy of compliance with the specified geometric dimensions, providing a given surface roughness of the flow part of the ESP stages, which in turn affects the characteristics of the pumps.

The paper shows that during bench testing of ESP stages, made at different plants, the deviation of the characteristics from the catalog values by an amount greater than the tolerance value was noticed.

 

Keywords: stages of ESP; ESP characteristics; manufacturing technology of ESP stages; accuracy of the geometric dimensions; surface roughness.

 

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UDC 531+534          DOI: 10.33285/1999-6934-2019-5(113)-20-26

 

RESEARCH OF THE EFFECT OF GAS SEPARATORS WORKING PARAMETERS
ON OPERATIONAL PROPERTIES (p. 20)

 

Artem Nikolaevich Musinskij, senior lecturer,

Roman Rinatovich Gizatullin, senior lecturer,

Victor Georgievich Ostrovsky, Cand. of tech. sci., associate professor

 

Perm National Research Polytechnic University

29, Komsomolsky prosp., Perm, 614990, Russian Federation,

e-mail: amusinskiy@gmail.com

 

Sergey Nikolaevich Peshñherenko, Dr. of phys.-math. sci., chief researcher

 

JSC "Novomet–Perm"

395, Cosmonauts Highway, Perm, 614065, Russian Federation

 

The paper is devoted to the study of the influence of working parameters of submersible gas separators on their operational characteristics. The universal dependence of the separation ratio on the input parameters is obtained. It is shown that toroidal vortices occur in the flow channels of gas separators, which are "traps" for abrasive particles. Increase of the flow rate allows reducing the number of toroidal vortices, and the higher is the fluid flow rate, the further are the toroidal vortices from the entrance to the gas separator. The mechanism of hydro-abrasive wear of gas separators is also considered and the options for increasing the gas separators abrasive resistance are proposed.

 

Keywords: gas separators; separation ratio; abrasion resistance; Taylor vortices.

 

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UDC 622.276.53.054.4          DOI: 10.33285/1999-6934-2019-5(113)-27-32

 

ON THE EFFECT OF A PERIODIC OCCURRENCE
OF A RODS COLUMN COMPRESSED PART ON A WELL OPERATION (p. 27)

 

Alfred Shamsunovich Yanturin, Dr. of tech. sci., Professor,

Flyura Zinatovna Bulyukova, Cand. of tech. sci., assistant professor

 

Ufa State Petroleum Technological University

1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation,

e-mail: Yanturin2@yandex.ru, flura2003@mail.ru

 

Ruslan Alfredovich Yanturin, Cand. of tech. sci.

 

LLC "Soltubi"

5, Bratya Kadomtsevy str., Ufa, 450059, Republic of Bashkortostan, Russian Federation,

e-mail: Yanturin1@yandex.ru

 

Ilvir Ilshatovich Akhmetzyanov, leading engineer

 

PJSC "Surgutneftegaz" NGDU "Fedorovskneft"

29, Neftyanikov str., Surgut, 628400, Tyumen region, Khanty-Mansi autonomous territory, Russian Federation,

e-mail: ahmet_ii@mail.ru

 

The results of studies of the influence of the periodic formation, after opening the suction valve of a plunger pump, the compressed part of the rod string in an inclined borehole, deformed in the form of a spatial helical spiral and a "snake" above it, are presented on the increase (up to tens of percent, depending on the dynamic fluid level) of energy costs of oil production, as well as the associated pumping unit efficiency decrease.

On the basis of field measurements carried out in wells, simultaneously, axial loads on the pump plunger and polished rod (in the Western Siberia), as well as longitudinal movements of the plunger and the rod (in the Ural-Volga region), the dominant influence of the periodic occurrence of the rod string compressed part on the rods accidents is confirmed, associated with self-unfastening threaded connections of the rods and the concomitant fatigue destruction of them (along the threads).

The necessity of accounting of the influence of the periodic occurrence of the rod column compressed section above the pump plunger on the energy consumption increase for recovery of produced reservoir fluids to the surface as well as when choosing modes of pumping units operation by plunger pumps, with account of the rheological characteristic of the productive collector is shown.

The expediency of upgrading the designs of plunger pumps, previously developed for relatively shallow vertical wells, was confirmed in order to:

– redirecting of the energies of changes of the rods columns elastic deformations and tubing, periodically arising after opening of the pump suction valve, from an additional increase of rods accidents, to a decrease in the hydraulic resistance of the near-wellbore zone of the reservoir and a concomitant increase of the final oil recovery from the productive reservoir zone adjacent to the well;

– ensuring the possibility of control of the pump plunger stroke length relative to the movement of the polished rod, with account of the vertical component of the fluid dynamic level in the inclined well, in order to reduce energy consumption for oil production and, accordingly, its cost.

 

Keywords: inclined well; rod columns and tubing; movements of the pump plunger and polished rod; deformation of the rods in the form of a helical spiral and "snake".

 

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UDC 539.374          DOI: 10.33285/1999-6934-2019-5(113)-33-36

 

QUALITY, MICROSTRUCTURE, MICROHARDNESS
OF THREADS SURFACE LAYER PROCESSED BY ROLLING (p. 33)

 

Mikhail Zaurbekovich Khostikoev, Dr. of tech. sci., Professor of the Department "Standardization, Certification and Control of the quality of oil and gas equipment manufacture",

Andrey Anatolyevich Ivanov, engineer, post-graduate student

 

National University of Oil and Gas "Gubkin University"

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

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

 

The thread quality, microstructure and microhardness of the material surface layer, acquired as a result of mechanical processing by rolling, are investigated. The nature, distribution, and depth of the deformed layer, obtained during rolling-on the thread surface, were experimentally established. The obtained data indicate the feasibility of the rolling process use, which improves the quality of threads in view of accuracy and surface roughness, increases threaded connections strength, improves physical-mechanical properties of products materials and, in some cases, eliminates the need for subsequent heat treatment and grinding of products threads.

 

Keywords: quality of rolled threads; microstructure of the treated surface; microhardness of the treated surface.

 

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UDC 622.276.43:622.276.53:65.011.4          DOI: 10.33285/1999-6934-2019-5(113)-37-41

 

AN ANALYSIS OF THE EFFECTIVE FUNCTIONING
OF THE FORMATION – WELL – PUMP SYSTEM (p. 37)

 

Yury Gennadievich Epifanov, post-graduate student of the Department of RENGM, "Gutseriev" Institute of Oil and Gas

 

Udmurt State University

1, room 415, Universitetskaya str., Izhevsk, 426034, Russian Federation,

e-mail: lgkim@ya.ru

 

To study the processes of pressure preservation in the formation – well – pump system in the conditions of production of viscous and high-viscous oil-water emulsion, it is necessary to take into account the fact that the formation fluid moves in three systems: formation – well – pump, which can work independently of each other, while being very closely interdependent and interrelated. During a well operation, the formation fluid movement, where gases and liquids are part of the oil-water emulsion, occurs in the formation under pressure, that characterizes natural energy. The higher is the formation pressure, the more positive is the energy of the formation. The task of maintaining the formation energy has both technological and operational economic effect. Analysis of emulsion formation under different thermodynamic conditions will allow to develop methods of influence on oil-water emulsions properties and minimize their negative impact on oil production processes. Determination of the basic laws of oil-water emulsions formation during wells operation as well as their impact on the operation of wells is an important and urgent problem, the solution of which is of great importance for the oil producing industry.

 

Keywords: oil-water emulsion; formation; well; pump; pressure; viscosity; complicating factors.

 

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UDC 621.23.05          DOI: 10.33285/1999-6934-2019-5(113)-42-47

 

PROVISION OF OPERATIONAL LIFE-TIME PERIOD OF CRUSHERS LINERS
BY APPLYING NEW TECHNOLOGIES OF THEIR MANUFACTURING AND
WEAR-OUT DIAGNOSING (p. 42)

 

Porfiry Fedorovich Boyko, Cand. of tech. sci., assistant professor of Ugarov Starooskolsky Institute of Technology

 

National Research Technological University Moscow Institute of Steel and Alloys

42, microregion named after Makarenko, Stary Oskol, 309516, Belgorodsky region, Russian Federation,

e-mail: 410135@mail.ru

 

Efim Markovich Titievsky, Cand. of tech. sci., chief mechanical engineer

 

LLC "Petropavlovsk – Ferrous Metallurgy"

2, Entuziastov boulevard, Moscow, 109554, Russian Federation,

e-mail: efimtitievskiy@mail.ru

 

Vladimir Anatolievich Timiryazev, Dr. of tech. sci., Professor of the Department "Technology of Machinery Engineering"

 

Moscow State Technological University "Stankin"

3a, Vadkovsky per., Moscow, 127055, Russian Federation,

e-mail: timwa38@mail.ru

 

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

 

National Research Technological University of Moscow Institute of Steel and Alloys

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

e-mail: artvik@mail.ru

 

Mikhail Zaurbekovich Khostikoev, Dr. of tech. sci., Professor of the Department "Standardization, Certification and Control of the quality of oil and gas equipment manufacture"

 

National University of Oil and Gas "Gubkin University"

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

e-mail: khostikoevmz@mail.ru

 

The problems of operation, prolongation of operational life-time period and diagnostics of the condition of cone crushers liners of high unit capacity used for rock crushing are considered. A set of technologies for improving the wear-out resistance of the liners’ material, for diagnosing their wear-out and avoiding overload when unbreakable objects penetration during operation is proposed.

Working surfaces of mobile and motionless cone crushers are protected from abrasive wear and destruction by adjusting the coating-lining, which requires periodic restoration and replacement. The cost of such repairs is decisive both in terms of time and costs. Crushing linings cannot be operated until they are destroyed. When linings are worn out, the width of the exit gap increases and the granulometric composition of the crushed rock deteriorates. The analysis of the size relationships that determine the formation of the gap size made it possible to reveal the dependence for calculating the width of the discharge gap at a certain moment.

In order to establish the optimal inter-repair periods, the patterns of liners wear-out up to their maximum states are investigated. The studies show that liners resistance on fixed crusher units is 20…30 % lower than liners resistance installed on movable units, and up to the maximum limit of wear, only 30 % of the installed liners work.

When operating crushers, it is necessary to systematically monitor the state of liners. To do this, the methods applied for measuring liners wear and detecting external and internal defects using video endoscopy and ultrasound diagnostics are considered.

To avoid overloading and destruction of liners when non-crushed objects pass into the working area, it is necessary to continuously monitor the load in the crushing chamber and use the automatic protection system that ensures the removal of un-crushable objects.

Mechanical properties improvement the liner material (steel 110G13L) is achieved by obtaining a fine-grained structure by means of modifying the steel with titanium and vanadium. However, the best results were obtained when the new high-manganese steel 125G18H2MNL, in which the combination of alloying elements improves the liners’ mechanical and operational properties. As a result, the availability factor of KKD 1500/180 crushers at Stoylensky Mining and Processing Plant (MPP) increased to 0,885 as compared with 0,666 before implementation.

 

Keywords: liner; wear; cone crushers; operation; repair; condition diagnostics; replacement.

 

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UDC 622.276.63          DOI: 10.33285/1999-6934-2019-5(113)-48-51

 

THE TECHNOLOGY UPDATING OF DIRECTIONAL ACID IMPACT
ON A RESERVOIR AND EVALUATION OF ITS APPLICATION USING THE EXAMPLE
OF THE FIELDS OF RUE "BELORUSNEFT" PRODUCTION ASSOCIATION (p. 48)

 

Alexander Ivanovich Gavrilenko, Cand. of tech. sci., leading researcher of the Laboratory "Oil production Enhancement" of the Department "Equipment and Technology of a Reservoir Stimulation", "BelNIPIneft",

Vasily Viktorovich Frolov, the First Deputy-Director, Chief engineer of "BelNIPIneft",

Dmitry Viktorovich Tkachev, Head of the Department "Equipment and Technologies of a reservoir Stimulation", "BelNIPIneft",

Natalia Olegovna Baranova, 2nd category engineer of the Department "Equipment and Technology of a Reservoir Stimulation", "BelNIPIneft"

 

"Belorusneft" Production Association

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

e-mail: a.i.gavrilenko@beloil.by

 

The paper describes the stages of updating the technology of directional acid impact on a reservoir treatment in order to stimulate oil inflow in carbonate reservoirs of the Republic of Belarus. The main reagents and the formulations of a temporary-blocking composition, as well as equipment for its preparation in field conditions are given. The applied composition and the technology made it possible to increase the success of the work and, taking into account the deterioration of the reserve structure (increase of water cut and the share of hard-to-recover reserves), to ensure good well performance indicators.

 

Keywords: inflow stimulation; directional acid treatment; oil-acid emulsion; surfactant; hydrodynamic cavitation mixer.

 

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UDC 622.691.12:665.62          DOI: 10.33285/1999-6934-2019-5(113)-52-55

 

DEVELOPMENT OF JOINT OPERATION SCHEMES
OF COMPLEX GAS TREATMENT PLANT-13 (CGTP-13) AND CGTP-15 (p. 52)

 

Rustam Nailevich Ismagilov, Deputy-General Director in the field of production,

Alexey Aleksandrovich Frolov, Chief engineer – the First Deputy-head of the Department, a branch of Urengoy Gas Field Department,

Anton Aleksandrovich Tipugin, Deputy-Head of the Center of Innovative Development and Prospective Planning, Engineering-Technical Center,

Nikolay Aleksandrovich Burmistrov, Head of the Department of the Technological Monitoring of gas-condensate field systems, Engineering-Technical Center,

Sergey Aleksandrovich Serebryanskiy, Leading Engineer of the Department of Technological Monitoring
of Prospective Projects, Engineering-Technical Center

 

LLC "Gazprom dobycha Urengoy"

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

e-mail: r.n.ismagilov@gd-urengoy.gazprom.ru, a.a.tipugin@gd-urengoy.gazprom.ru,
n.a.burmistrov@gd-urengoy.gazprom.ru, s.a.serebryanskiy@gd-urengoy.gazprom.ru

 

The paper discusses the main problems of ensuring sustainable operation of the fields at various stages of the Urengoy field development. During the production decline of a complex gas treatment plant-13 (CGTP-13) at the Cenomanian deposit, booster compressor stations consisting of two compressor shops were commissioned. Maintenance of reliable operation of booster compressor stations (BCS) was based on a set of measures on improvement of BCS equipment and introduction of various schemes of the fields’ joint operation. The necessity of using fundamentally new solutions for the operation of the booster complex and gas treatment equipment at the late and final stages of the Urengoy field development is substantiated.

 

Keywords: the Cenomanian and Valanginian deposits; declining production; energy efficient operation; complex gas treatment plant; booster compressor station; compressor; reconstruction; fields joint operation.

 

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UDC 665.612.2          DOI: 10.33285/1999-6934-2019-5(113)-56-61

 

A CONCEPT OF A TECHNOLOGICAL COMPLEX TO BE USED
FOR PROCESSING ASSOCIATED PETROLEUM GAS TO DEVELOP
OIL DEPOSITS ON THE RUSSIAN ARCTIC SHELF(p. 56)

 

Alexey Petrovich Zavyalov, Cand. of tech. sci., assistant professor of the Department "Equipment of Gas and Oil Processing", chief process engineer of ITC "Orgtechdiagnostika" of JSC "Gazprom orgenergogaz"

 

National University of Oil and Gas "Gubkin University"

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

e-mail: zavyalovap@yandex.ru

 

JSC "Gazprom orgenergogaz"

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

 

The paper discusses the relevance of the problem of the useful use of associated petroleum gas when developing oil deposits on the shelf of the Arctic seas of Russia. A concept of creating a technological complex for processing associated petroleum gas based on GTL technology using the Arctic ice-class vessel is presented, its principal advantages for domestic oil companies engaged in offshore oil production are shown. Based on the analysis of the world and domestic experience of the development of similar marine equipment, the conclusion about the principal possibility of creation of the offered technological complex by the domestic shipbuilding industry is made.

 

Keywords: shelf; oil field; associated petroleum gas; GTL technology; floating plant.

 

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UDC 622.279.8          DOI: 10.33285/1999-6934-2019-5(113)-62-63

 

ANALYSIS OF THE DEPENDENCE
OF THE DEGREE OF NATURAL GAS PURIFICATION
ON THE SIZE OF POLLUTANT PARTICLES OF IMPURITIES (p. 62)

 

Alexander Nikolaevich Lisenkov, Dr. of tech. sci., Professor

 

National University of Oil and Gas "Gubkin University"

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

 

A model is proposed that describes the dependence of the degree of natural gas purification on the size of impurities polluting particles. A procedure has been developed for the optimal planning of measurements and the estimation of model parameters, which makes it possible to obtain the most accurate "passport" values of such parameters. The model can be applied for predictive calculations and its parameters – for a comparative analysis of purification schemes when using different equipment and incoming gas for purification from different sources.

 

Keywords: gas purification; model; measurement optimization.

 

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UDC 622.276          DOI: 10.33285/1999-6934-2019-5(113)-64-69

 

OIL EMULSIONS RHEOLOGY (p. 64)

 

Sakit Rauf Rasulov, Dr. of tech. sci., Professor

 

Azerbaijan State Oil and Industry University

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

e-mail: rasulovsakit@gmail.ru

 

Gudret Isfendiyar Kelbaliev, Dr. of tech. sci., Professor, corresponding member of NASA

 

Institute of Catalysis and Inorganic Chemistry NASA

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

e-mail: kkelbaliev@yahoo.com

 

The problems of oil emulsions rheology are considered taking into account the influence of structure formation, water content and asphalt-resinous substances. The analysis of the structure of oil emulsions during their separation in the apparatus is given, the role of the intermediate layer in the coalescence of droplets and aggregates crushing is noted. It is shown that the intermediate layer is a dynamic layer, since its structure and thickness are not constant. The mechanism of structure formation and destruction of oil emulsions is described. The specific features of the rheology of structured oil emulsions are determined. The results of studies have shown that oils, depending on their water-flooding, exhibit the properties of power-law dilatant non-Newtonian fluids. Mathematical formulations are given to estimate the effective viscosity depending on the water content, the concentration of asphalt-resinous substances and the size of the droplets.

 

Keywords: rheology; emulsion; intermediate layer; viscosity; structure formation; water content; concentration.

 

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