ISSN 1999-6934

Scientific-technical journal

EQUIPMENT AND TECHNOLOGIES

FOR OIL AND GAS COMPLEX

                                                                                                            published since 2001

August 2016                                            ¹ 4                                         6 issues per year

 

CONTENÒS

 

MACHINERY AND EQUIPMENT

 

Zakharov B.S., Zakharov I.B. GD19-5 hydraulic impact unit used for treatment of wells’ bottom area (p. 4-8)

 

Kusov G.V., Savenok O.V., Beketov S.B. Selection and justification of reliability indicators of block automated oilfield equipment (p. 8-12)

 

Serikov D.Yu. Collapsible rolling-cutter drill bit of large diameter for reactive turbo drilling (RTD) (p. 12-18)

 

Pyndak V.I., Dyashkin A.V. Compaction machinery for extreme conditions of functioning (p. 18-20)

 

Galimullin M.L., Gabdrakhimov M.S., Suleymanov R.I., Zaripova L.M., Davydov A.Yu., Khabibullin M.Ya. Pump rod with damping device in the design of the valve assembly (p. 21-24)

 

NEW METHODS AND TECHNOLOGIES

 

Ivanovsky V.N., Sabirov A.A., Degovtsov A.V., Donskoy Yu.A., Bulat A.V., Zuev A.S., Yakimov S.B. Problems of energy efficiency of electric-driven centrifugal pumping units (p. 25-30)

 

Shevchenko A.K. Problems of hydrocarbon deposits operation being at the late stage of their development: control over the worked-out deposits and possible ways of their solution (p. 31-33)

 

Hasanov R.A., Gulgazli A.S., Zeynalov A.I. Problems of determination of operating loads on a production drill-pipe casing string (p. 33-35)

 

Ibatullin I.D., Belokorovkin S.A., Zagidullina D.R., Bodnarchuk A.V. Determination of grease lubricant flow-rate through cylindrical librication passages (p. 36-42)

 

Solomennikov N.N., Mityukov N.V., Busygina E.L., Kim S.L. Pyrotechnic mobile bench for shock testing (p. 42-45)

 

Davydov V.A. Survey of underground pipelines by means of magnetometry (p. 45-49)

 

Pavlova P.L., Kondrashov P.M. Experimental study of laboratory well thermal-electric device (p. 50-54)

 

Zeynalov E.A., Iskenderov E.K., Ismaiylov B.G. Evaluation of minor oil leakages during rises damage of subsea oil and gas pipelines (p. 54-57)

 

Matveev Yu.A., Bogdanov A.Yu., Chebotarev S.S., Lavrinenko D.F. Installation of waste water cleaning from oil products using coalescent and sorbent filters (p. 58-63)

 

Rzaev Ab.G., Nurieva I.A., Rasulov S.R. Investigation of coalescence mechanisms of disperse phase drops and oil emulsions separation (p. 64-67)

 

Information on the articles (p. 68-77)

 

 

Information on the articles

 

UDC 622.276

 

GD19-5 HYDRAULIC IMPACT UNIT USED

FOR TREATMENT OF WELLS’ BOTTOM AREA (p. 4)

 

Boris Semenovich Zakharov,

Ivan Borisovich Zakharov

 

LLC "Ecogermet-M"

e-mail: Ecogermet@mail.ru, Vanniva@list.ru

 

A number of different technologies applied for wells treatment are now mastered in order to increase oil recovery of formations and the implosion method is among them. It is carried out by means of pressure hydraulic generators (PHG). The method is based on creation of an instant hydraulic impact of fluid, filling the well bore, on a well bottom area and then on a pore reservoir skeleton, causing formation and development of cracks.

Well-known designs of hydraulic pressure generators have several drawbacks, mainly due to the fact that they use elements of the standard sucker-rod pumps. They are often jammed and clogged by mechanical impurities.

The use of mechanical seals like 2SPhh and NSBhh as well as special designs of valves made it possible for LLC "Ecogermet-M" within the previous 25 years to develop pump systems, less energy-consuming and more efficient than the existing ones used in hydraulic impact units in Russia and abroad.

The paper describes the design and operational principal of GD19-5 device, the new type of a hydraulic impact unit as well as presents the formulas for pressure calculation of hydraulic impact, the scheme of the unit and equipment for well treatment and the methods of their implementation at the injection wells.

Three injection wells were treated using GD19-5 hydraulic impact unit. All wells demonstrated positive results. Wells’ intake rate increased from 2 to 148 m3/day.

 

Key words: treatment of a well bottom area; increase of production; implosion; hydraulic pressure generator; mechanical seal; injection well; injection of water into a reservoir.

 

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UDC 622.276.05

 

SELECTION AND JUSTIFICATION OF RELIABILITY INDICATORS

OF BLOCK AUTOMATED OILFIELD EQUIPMENT (p. 8)

 

Gennady Vladimirovich Kusov,

Olga Vadimovna Savenok

 

Kuban State Technological University

2, Moskovskaya str., 350072, Krasnodar, Russian Federation,

e-mail: de_france@mail.ru, olgasavenok@mail.ru

 

Sergey Borisovich Beketov

 

North-Caucasian Federal University

1, Pushkin str., 355009, Stavropol, Russian Federation,

e-mail: bsb.gt@rambler.ru

 

The article proves that reliability of block automated oilfield equipment is best described by such indicators as response readiness and the average number of functioning. The latter rather good reflects the reliability level of the locking device, but can be determined only in the laboratory. Equipment reliability coefficient is the ratio of the number of products, transferred to the consumer at the output of the system, to the amount of products obtained at the system input. The proposed generalized indicator of reliability of the system of block automated oilfield equipment characterizes the relative amount of the production loss and has the advantage of independence of a well flow-rate; it also makes it possible to compare reliability of the systems with different operational capacities.

 

Key words: reliability indicators; automated oilfield equipment; equipment reliability coefficient; generalized reliability index; response readiness.

 

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UDC 622.243.92

 

COLLAPSIBLE ROLLING-CUTTER DRILL BIT OF LARGE DIAMETER

FOR REACTIVE TURBO DRILLING (RTD) (p. 12)

 

Dmitry Yurievich Serikov

 

Gubkin Russian State University of Oil and Gas

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

e-mail: serrico@rambler.ru

 

The paper considers some specific features of kinematics of large-diameter, multiple rolling-cutter drill bits used during reactive turbo drilling. Kinematics of a rolling-cutter drill bit working with sliding of its cutting structures along the well bottom is analyzed. The factors that affect the magnitude and direction of cutting structures teeth sliding along a well bottom are defined. Drawbacks of geometry of drill-bits cutting structures, designed for continuous drilling, when used in the aggregates of reactive turbo drilling (RTD) are revealed. Research conducted in this paper allowed concluding that manufacturer of enlarged-diameter drill bits using sections of standard drill bits for continuous drilling is not rational, since the geometry of conventional drill-bits cutting structures does not take into account the specific interaction of cutting structures teeth with a well bottom surface when using RTD. The fact caused the development of the principal scheme of six-rolling-cutter drill bit to be used in RTD conditions. The new six-rolling-cutter drill bit is equipped with surface-reinforced toothed cutting structures of new design.

The use of the proposed design of a collapsible drill bit with a new geometry of the surface-reinforced toothed cutting structures will allow increasing wells drilling efficiency using RTD method due to perfection of destructive capacity of drill-bit cutting structures and reduction of energy consumption when destructing the rock. In turn, the use of a collapsible structure will give the possibility of multiple use of housings of rolling-cutter drill bits as well as to reequip locally the worn-out or damaged parts of the drilling tools. It will bring essential reduction of cost of construction of well bores and large diameter wells by applying RTD method.

 

Key words: reactive turbo drilling; rolling-cutter drill bit; instantaneous axis of rotation.

 

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UDC 621.01

 

COMPACTION MACHINERY

FOR EXTREME CONDITIONS OF FUNCTIONING (p. 18)

 

Viktor Ivanovich Pyndak,

Andrey Vladimirovich Dyashkin

 

Volgograd State Agricultural University

26, Universitetsky prosp., 400002, Volgograd, Volgograd region, Russian Federation,

e-mail: sport2@vlpost.ru, AndrejDyashkin@mail.ru

 

Extreme operating conditions (high pressure, aggressive environment) in petroleum and chemical industries require new compaction machinery. Prefabricated seals for various pressure levels in the range of 40…105 MPa, which are based on specific (M-shaped) cups of rubberized fabric or plastics, are developed. The cups have a central projection that accepts most of the load. Seals differ by self-adaptation and high durability when reducing friction.

 

Key words: prefabricated seals; M-shaped cup; high pressure; aggressive environment; durability.

 

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UDC 622.276

 

PUMP ROD WITH DAMPING DEVICE IN THE DESIGN

OF THE VALVE ASSEMBLY (p. 21)

 

Minivaris Lutfullinovich Galimullin,

Mavlitzyan Sagityanovich Gabdrakhimov,

Rustem Iskhakovich Suleymanov,

Lilia Mavlitzyanovna Zaripova,

Aleksander Yuryevich Davydov,

Marat Yahievich Khabibullin

 

VO Ufa State Oil Technical University, branch in Oktyabrsky-city

54a, Devonskaya str., 452600, Oktyabrsky-city, Republic of Bashkortostan, Russian Federation,

e-mail: lilyabert31@mail.ru

 

At present the problems of renovation are the most relevant ones in oil industry, particularly in oil production. One of the trends in oil production is reduction of delay when repairing oilfield equipment. With account of the mechanized method’s largely-scaled use in the oil production system, including downhole sucker-rod pumping units (DSRPU), and based on the analysis of the causes of DSRPU downtime, there proposed some damping device in the construction of a full hole valve. The use of the damping device leads to dynamic reduction of the load on a casing string. The use of valves with the damping device will allow reducing the rods breaks in the casing string as well as prolonging the life-time of the valve itself. Full hole valve with the damping device can be manufactured in repair shops of an Oil and Gas Production Department (OGPD.

It was decided to use the damping device in the construction of a full hole valve in those cases when polyurethane is used as a sealing element and it is necessary to ensure a guaranteed seal and to increase the operational life-time of the couples "seat-valve" at the expense of strain limitation on the cuff using a stopper of movable sleeve stroke.

 

Key words: sucker rod pump; sucker rod column; broken rods; the depth of the suspension; damping device; high viscosity liquid; moving-off; plunger.

 

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UDC 622.276

 

PROBLEMS OF ENERGY EFFICIENCY

OF ELECTRIC-DRIVEN CENTRIFUGAL PUMPING UNITS (p. 25)

 

Vladimir Nikolaevich Ivanovsky,

Albert Azgarovich Sabirov,

Alexey Valentinovich Degovtsov,

Yury Andreevich Donskoy,

Andrey Vladimirovich Bulat

 

Gubkin Russian State University of Oil and Gas

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

e-mail: ivanovskiyvn@yandex.ru, sabirov@gubkin.ru, degovtsov.aleksey@yandex.ru, Don125@yandex.ru, avbulat87@gmail.com

 

Alexey Sergeevich Zuev,

Sergey Borisovich Yakimov

 

PJSC "NC" Rosneft "

31A, Dubininskaya str., 115054, Moscow, Russian Federation,

e-mail: a_zuev@rosneft.ru, s.yakimov@rosneft.ru

 

The most energy-intensive areas of oil production are mechanized fluid production from wells, water injection, oil treatment and pumping, while the power consumption to lift liquid from wells makes from 55 to 62%; operation of water injection system consumes 22…30%, oil and gas preparation and transportation – 8…23%.

Since more than 60 % of all oil wells in Russia are equipped by electric centrifugal pumping units (ECP) which ensure producing of more than 75 % of all the oil, the problems of ECP energy efficiency are highly urgent today.

Distribution of energy losses in the assemblies of ECP units is analyzed, main energy losses are revealed to fall on the centrifugal pump and the electrical part of the unit, including a submersible electric motor (SEM), a cable line with an extension, transformer and a control station.

It is shown that reduction of SEM load up to 50 % of the nominal value brings 3…5 % decrease of efficiency coefficient, which drastically reduces SEM load factor cos φ (from 0,92 to 0,45) and increases the reactive power loss in the ECP units system.

Since energy losses in the cable can also be very significant, the choice of optimal designs of cable lines will allow significantly improve ECP energy efficiency.

Energy losses in the transformer, though not among the most significant ones, can make tens of kW h for powerful units. That’s why, the most important criterion when choosing a power transformer is its energy efficiency.

It is shown that the ECP control stations have a high efficiency coefficient, which is within 93…98 %, the ways of increasing efficiency coefficient of intellectual control stations are outlined.

 

Key words: energy efficiency; electrical centrifugal pumps (ECP); submersible electric motor (SEM); cable line; transformer; control station.

 

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UDC 622.276

 

PROBLEMS OF HYDROCARBON DEPOSITS OPERATION

BEING AT THE LATE STAGE OF THEIR DEVELOPMENT:

CONTROL OVER THE WORKED-OUT DEPOSITS AND

POSSIBLE WAYS OF THEIR SOLUTION (p. 31)

 

Alexander Konstantinovich Shevchenko

 

Å-mail: attica20@mail.ru

 

The paper considers the problems of improving safety when operating hydrocarbon fields at different stages of their development. Examples of hydrocarbon reservoir gas entrance to the subsurface layers of the land, resulting in environmental pollution, are given. This happens at many producing wells of oil and gas fields and wells of underground gas storage facilities mainly due to annulus leakage because of cracks formation in the cement stone. The possible technologies of wells workover, proposed by a number of organizations, which gave the positive effect, are discussed. Particular attention is drawn to the latest period of fields’ exploitation, namely, possibility of hydrocarbons large interflows between permeable layers and into the upper part of the stratigraphic section. It is proposed to implement hydrocarbons controlled bypass between permeable layers thus preventing gas migration into the subsurface layers, controlling the process and issuing forecasts for the near and far future. At the state level, it can be carry out by the Centre of monitoring of depleted hydrocarbon reservoirs, proposed in the paper.

 

Key words: hydrocarbons; oil and gas fields; underground gas storage facilities; producing wells; hydrocarbon flows; subsurface layers; monitoring.

 

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UDC 622.245

 

PROBLEMS OF DETERMINATION OF OPERATING LOADS

ON A PRODUCTION DRILL-PIPE CASING STRING (p. 33)

 

Ramiz Alish Hasanov,

Alesker Samed Gulgazli,

Asif Ibrahim Zeynalov

 

Azerbaijan State University of Oil and Industry

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

e-mail: ramizhasanov52@hotmail.com, alesker.gulgåzli@mail.ru, Zeynalov_scr@mail.ru

 

The paper determines the directions of the researches aimed at preventing the phenomenon of losses of a well flow area and its aftereffects under the influence of loads on the production string, being the result of stress-strain state of the surrounding rocks.

The initial stresses in the linear-elastic rocks are determined as well. It is proved that in case of uz ≠ 0, the coefficient of rocks lateral thrust is defined similarly when uz = 0.

 

Key words: production casing string; orifice; initial voltage; rocks; mechanical characteristics; lateral thrust.

 

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UDC 621.892

 

DETERMINATION OF GREASE LUBRICANT FLOW-RATE

THROUGH CYLINDRICAL LIBRICATION PASSAGES (p. 36)

 

Ildar Duglasovich Ibatullin,

Sergey Alexandrovich Belokorovkin,

Dinara Radievna Zagidullina

 

Samara State Technical University

244, Molodogvardeiskaya str., 443100, Samara, Russian Federation,

e-mail: s.belokorovkin@vbm.ru

 

Alexey Vladimirovich Bodnarchuk

 

Gubkin Russian State University of Oil and Gas

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

 

To provide the desired coefficient of lubricant refreshment in friction couples with a lubricant forced feeding there required evaluation of its different parameters, allowing calculating the flow rate through the channels of the lubricating system with account of operating pressures and temperatures. The paper presents the developed method to determine the grease lubricant flow-rate through the cylindrical shape channels.

Thermal kinetics method of evaluating the activation characteristics of grease lubricants flow through cylindrical lubrication channels as well as a device for carrying out thermo-kinetic testing of lubricants, developed in the laboratory of nano-structured coatings of Samara State Technical University are described. The device allows evaluating the activation characteristics of grease lubricants under different values of pressures and temperatures. The results of experimental studies of the lubrication flow rate through the cylindrical channel are presented like diagrams. The numerical values tabulated, kinetic curves are plotted thereon. The values of the activation characteristics for advanced lubricants to be used for drill bits are given. Using the obtained values of the activation characteristics, it is possible to calculate the lubrication flow rate under different pressures and temperatures.

 

Key words: lubrication flow; activation energy for a lubricant flow; structure-sensitive factor; cylinder oil passages; lubrication for drill bits; thermo-kinetic tests.

 

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UDC 67.05

 

PYROTECHNIC MOBILE BENCH FOR SHOCK TESTING (p. 42)

 

Nikolay Nikolaevich Solomennikov,

Nikolay Vitalievich Mityukov,

Elena Leonidovna Busygina

 

Kalashnikov Izhevsk State Technical University

7, Studencheskaya str., 426069, Izhevsk, Russian Federation,

e-mail: nico02@mail.ru

 

Stanislav Leonidovich Kim

 

Institute of Mechanics, Ural Branch of the Russian Academy of Sciences

34, Baramzina str., 426067, Izhevsk, Russian Federation,

e-mail: lgkim@ya.ru

 

Based on the patent-information searching, a choice of a design-layout scheme of mobile pyrotechnic bench for shock testing was conducted. Its development is caused by the need of electronic equipment protection from "flickering" effects directly at the sites, firstly, from shocks. To optimize the bench parameters, a mathematical model based on differential equations with a time derivative was developed. The correctness of the model was proved by a series of field experiments. The developed mathematical model helped choosing some mass-dimensional parameters to minimize the mass of the bench. It was found out that the grain diameter enlarging leads to its burning time increase, so, as a consequence, there reduced the pressure peak and the required thickness of the housing, but the housing length necessary to reach the given speed increases. In case of the grain diameter reduction, the pressure peak grows, consequently brining the wall thickness increase, but the installation housing length decreases. In case of the container acceleration up to 100 m/s there required additional powder weight of 0.31 kg and 0.42 m additional length of the installation.

 

Key words: shock tests; overload; ground testing; test bench.

 

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UDC 622.323:550.838

 

SURVEY OF UNDERGROUND PIPELINES

BY MEANS OF MAGNETOMETRY (p. 45)

 

Vadim Anatolievich Davydov

 

Bulashevich Institute of Geophysics, Ural Branch of the Russian Academy of Sciences

100, Amundsen str., 620016, Yekaterinburg, Russian Federation,

e-mail: davyde@yandex.ru

 

To update the plans and construction of modern digital maps of underground pipelines there carried out geodetic survey of the existing communications. Thus, underground pipelines are preliminary detected by means of special searching devices such as pipe route locators and pipe-cable-locators. A shortcoming of the given devices in the active variant of searching is the necessity of use of an additional generator. In the passive mode of searching (without the generator) to define metal pipelines location is only possible only in the operative range of ground currents.

The paper presents the results of experimental-methodical works on using the proton magnetometer, having no the specified shortcomings, as a searching device. It is found out, that the most authentic measured parameter when detecting the underground pipeline route is the vertical gradient of a full vector of the Earth’s magnetic field. The magnetometry with of a vertical gradient measurement allows confident detection of underground pipelines in communication corridors if they are settled down at the distance of more than five meters from each other. Close placement of large metal objects and electric lines refer to interfering factors. The surveying method based on searching magnetometry was developed for drawing the plans of underground communications placement on the territories of petroleum fields. The conducted tests proved the fact, that the use of magnetometers-gradiometers ensures 20…30 % increase of productivity of underground pipelines survey as compared with the standard of pipeline routs locators.

 

Key words: survey of underground communications; oil pipeline; water pipeline; global navigation satellite system; GPS/GLONASS; magnetometer; gradiometer; vertical gradient of magnetic field.

 

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UDC [531.8+536.248.1]

 

EXPERIMENTAL STUDY OF LABORATORY WELL

THERMAL-ELECTRIC DEVICE (p. 50)

 

Praskovya Leonidovna Pavlova,

Petr Mikhailovich Kondrashov

 

Siberian Federal University

82, bld. 6, Svobodny prosp., 660041, Krasnoyarsk, Russian Federation,

e-mail: praskovya2611@yandex.ru, p_kondrashov@mail.ru

 

Fields development in the Arctic and northern regions in the global oil industry requires updating the equipment to maintain negative temperatures in permafrost during construction and operation of oil and gas wells. In this regard very promising is the development of the equipment that could control the heat flow and regulate the temperature within the well. In our opinion, such equipment can be developed on the basis of Peltier thermoelectric effect.

The article describes the developed construction of an experimental laboratory sample of a devices based on thermoelectric effect, which is called "well thermoelectric device", the conducted experimental research, presents conclusions on the experiment further improvement.

 

Key words: thermoelectric effect; Peltier-effect; device; laboratory sample; permafrost; experimental research.

 

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UDC 622.276.8

 

EVALUATION OF MINOR OIL LEAKAGES DURING RISES DAMAGE

OF SUBSEA OIL AND GAS PIPELINES (p. 54)

 

Elshan Arif Zeynalov,

Elman Kheyrulla Iskenderov,

Babek Gafar Ismaiylov

 

Azerbaijan State University Oil and Industry

34, Azadlig prosp., Az1010, Baku, Republic of Azerbaijan,

e-mail: Zeynalov_scr@mail.ru

 

The paper presents the results of calculation of sizes of oil small leaks in case of subsea pipelines damage with account that the rate of the expiration of oil leakage in the place of damage of the subsea pipeline is not constant and depends on the direction of oil flows in the pipe when moving to the crack, on the pipeline route profile, on the pipeline diameter and pressure, on the damage size, on the amount of the flown out oil depending on the time of flow with account of various pressures created in the subsea pipeline riser. Calculation formulas to define the liquid flow time through the openings in the place of damage under constant and free-flow modes in case of oil small leaks are given.

 

Key words: oil leak; subsea pipeline; forced flow; free-flow mode; oil flow-rate; amount of the flown out oil; riser; time of discharge; pressure head.

 

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UDC 622.692

 

INSTALLATION OF WASTE WATER CLEANING

FROM OIL PRODUCTS USING COALESCENT AND SORBENT FILTERS

(The RF patent of a utility model) (p. 58)

 

Yury Alexeevich Matveev

 

LLC "Ulyanovsky Automobilny Zavod"

92, Moskovskoye shosse, 432034, Ulyanovsk, Russian Federation,

e-mail: bgd020762@mail.ru

 

Andrey Yurievich Bogdanov

 

Federal State Budget Educational Establishment of Higher Education "Ulyanovsk State University "

42, Leo Tolstoy str., 432017, Ulyanovsk, Russian Federation,

e-mail: bogdanovAYu@mail.ru

 

Stanislav Stefanovich Chebotarev

 

JSC "Central Scientific-Research Institute of Economis, Computer Science and Control Systems"

2/7, Malaya Bronnaya str., 123104, Moscow, Russian Federation,

e-mail: stst57@ya.ru

 

Dmitry Fedorovich Lavrinenko

 

Federal State Budget Educational Establishment of Higher Professional Education "Civil Defense Academy (CDA), EMERCOM of Russia"

Sokolovskaya str., 141435, Khimki, Novogorsk micro-district, Moscow region, Russian Federation,

e-mail: LAVR85@INBOX.RU

 

The useful model refers to the devices used for waste water cleaning in motorway filling stations and oil tank farms. The unit allows to effectively clean waste waters in filling stations and oil tank farms from oil products, mechanical impurities and suspended substances as well as to collect oil products in a separate tank.

The useful model involves settling filters, pipeline communications with valves, pumping units, coalescent and sorbent filters, tanks for waste and clean waters collection as well as oil products.

 

Key words: filter; tank; cleaning unit; pipeline; gate valve; waste and clean water; suspended substances; oil products; pump; intake pipe; sorbent.

 

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UDÑ 541.182

 

INVESTIGATION OF COALESCENCE MECHANISMS

OF DISPERSE PHASE DROPS AND OIL EMULSIONS SEPARATION (p. 64)

 

Abbas Geydar Rzaev,
Ilaha Afsar Nurieva

 

Institute of Control Systems, NASA

9, B. Vakhabzade str., AZ1141, Baku, Republic of Azerbaijan,

e-mail: abbas_r@mail.ru

 

Sakit Rauf Rasulov

 

Azerbaijan State University of Oil and Industry

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

e-mail: rasulovsakit@gmail.ru

 

The paper deals with oil preparation intensification by means of development of mathematical models of destruction and coalescence of emulsified water drops. A new model for determining particles collisions frequency and residual content of the water phase is proposed.

 

Key words: oil emulsion; coalescence; collisions frequency; distribution of drops by their sizes.

 

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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY"

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