ISSN 1999-6934

Scientific-technical journal

EQUIPMENT AND TECHNOLOGIES

FOR OIL AND GAS COMPLEX

                                                                                                            published since 2001

June 2016                                                ą 3                                         6 issues per year

 

CONTENŇS

 

MACHINERY AND EQUIPMENT

 

Kershenbaum V.Ya., Guseva T.A. Corporate system of standardization and certification when improving the supply of equipment for oil and gas industry (p. 4-8)

 

Ivanovsky V.N., Kosachev V.V., Yakimov S.B. Optimization of sucker-rod pumping units (SRPU) to reduce capital and operational costs (p. 9-13)

 

Petrov V.N. Optimum placement of controlled directional wells while developing multi-layered oil reservoirs (p. 13-16)

 

Khabibullin M.Ya., Suleymanov R.I., Davydov A.Yu. Theoretical and laboratory studies of a device work used for liquid pulse pumping in a well (p. 16-21)

 

Serikov D.Yu. Some specific features of wells and tools washing in case of reactive-turbine drilling (p. 21-27)

 

Sevastyanov A.V., Mingulov Sh.G., Nigay Yu.V., Valeev M.D., Tretyakov R.S. Development of a suspended compressor design supplied with a hydraulic seal to be used in an oil well (p. 27-32)

 

MATERIALS AND REAGENTS

 

Ermolaeva N.V., Artemyeva M.S., Golubkov Yu.V. Carbonyl compounds of industrial oils (p. 33-36)

 

Marakhovsky A.V., Maryushin L.A. Etching of a pipeline after its installation (p. 37-39)

 

NEW METHODS AND TECHNOLOGIES

 

Yakimov S.B. Current state and prospects for reduce heat losses in cable lines of high power electric submersible pumping unit (ESP) in JSC "NK "Rosneft" (p. 40-46)

 

Demyanenko N.A., Povzhik P.P., Serebrennikov A.V., Zhoglo V.G., Pysenkov V.G., Privalov V.V., Budnik N.I. New technologies of oil fields development for enhancement of oil recovery factor and perspective of their development in the Republic of Belarus (p. 47-54)

 

Rzayev A.G., Nurieva I.Ŕ., Mustafayeva G.R., Orudzhev V.V., Rasulov S.R. Assessment of rheological characteristics of anomalous oils and oil emulsions (p. 55-58)

 

Donskikh B.D., Zhiltsov I.N., Makinsky A.A., Maximova T.V. Modern methods of total sulfur determination in natural gas (p. 58-63)

 

Tkachev D.V., Serebrennikov A.V., Tkachev V.M. Development of equipment and technologies for cavitation-impulse reservoir stimulation in conditions of oil fields of "Belorusneft" production association (p. 63-67)

 

Kazantsev M.N., Flegentov I.A., Zozulya S.N. Some specific features of repair documentation for overhaul of a multi-way plug valves (p. 68-72)

 

Information on the articles (p. 73-82)

 

 

Information on the articles

 

UDC 622.276.083.75

 

CORPORATE SYSTEM OF STANDARDIZATION AND CERTIFICATION

WHEN IMPROVING THE SUPPLY OF EQUIPMENT

FOR OIL AND GAS INDUSTRY (đ. 4)

 

Vsevolod Yakovlevich Kershenbaum,

Tatyana Alexeevna Guseva

 

Gubkin Russian State University of Oil and Gas

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

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

 

The article notes the increased role of corporate standardization systems and voluntary certification when delivering oil and gas production equipment to the Russian oil and gas fields. The influence of the requirements of the organizations’ standards on safety and quality of the purchased products is analyzed. The methods of research of reliability as the most important quality indicator of the supplied oil and gas equipment are discussed. Some complex approach to the reliability parameters estimation during the design and production of technological equipment is proposed and recommendations on its results’ application of in the field of procurement are submitted.

 

Key words: oil and gas equipment; reliability analysis; corporate standardization; standards of organizations; voluntary certification system; equipment procurement.

 

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UDC 622.276

 

OPTIMIZATION OF SUCKER-ROD PUMPING UNITS (SRPU)

TO REDUCE CAPITAL AND OPERATIONAL COSTS (đ. 9)

 

Vladimir Nikolaevich Ivanovsky,

Vladimir Vladimirovich Kosachev

 

Gubkin Russian State University of Oil and Gas

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

e-mail: ivanovskiyvn@yandex.ru, devil56789@yandex.ru

 

Sergey Borisovich Yakimov

 

JSC "NK "Rosneft"

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

e-mail: s_yakimov@rosneft.ru

 

In Russia about 40 % of oil wells are equipped by downhole sucker-rod pumping units. The efficiency of sucker-rod pumping units in many cases is higher than of electric centrifugal pumps, especially when extracting high-viscous oil and operating low flow-rate wells.

The problem of energy efficiency of oil production in recent years has become of great importance because of electric tariffs increase and reduction of oil market prices. The share of energy costs in the self-cost of crude oil produced by many oil companies had risen to 15...25 % by 2009, having reached the third place, and continued steady growth.

Due to the significant increase of the cost components of oil associated with the cost of equipment and electric power, there is a need to check the possibility of increasing the efficiency of sucker-rod pumps by switching to smaller sizes of tubing and sucker rods.

Calculations of all loads and energy consumption were carried out using "Avtotehnolog" program, which is widely used for the selection of the equipment and diagnosis of downhole pumping units by oilmen of Russia, Azerbaijan, Kazakhstan, Ukraine and some other countries.

The results of calculations proved economic and energy expediency of widespread use of small diameter tubing (60 mm) with a two-stage rods arrangement (16 + 19 mm) for assembling downhole sucker-rod pumping equipment. Use of the above-mentioned arrangement (provided by the strength and durability of the equipment) greatly reduces the cost of the equipment (tubing and driven electric motors) with a slight increase of the rods’ cost as well as reduces the installed and consumption power.

 

Key words: energy efficiency; energy consumption; downhole sucker-rod pumping unit; downhole equipment arrangement; tubing; rod string; depth of pump suspension; viscosity of the pumped liquid; power consumption; installed power.

 

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UDC 622.276.1/.4-419.5

 

OPTIMUM PLACEMENT OF CONTROLLED DIRECTIONAL WELLS

WHILE DEVELOPING MULTI-LAYERED OIL RESERVOIRS (đ. 13)

 

Vladimir Nikolaevich Petrov

 

Tatar Scientific-Research and Project Institute of Oil – "TatNIPIneft", PJSC "Tatneft" named after V.D. Shashin

32, Musa Jalil str., 423236, Bugulma, Republic of Tatarstan, Russian Federation,

e-mail: petrov@tatnipi.ru

 

Separate operation of several oil deposits pay intervals of which consist of two or several layers wit different reservoir characteristics requires use of the equipment that provides dual completion. Use of the costly equipment providing dual completion and its servicing essentially increases the self-cost of production of one ton of oil. On the other hand, construction of additional wells for single completions also leads to greater capital expenses.

Commonly used systems of two layers development based on the recompletion of wells cannot be considered cost-effective, because it involves conservation of reserves of the overlying layer and depletion of the underlying layer to the point of critical water cut or sub-economic production.

Field experience of producing wells operation as well as 3D modeling of oil fields development shows that the intensity the product water-flooding to a certain extent is defined by the geometry of the wellbore in productive intervals.

It would be a good practice to start development of a multilayered reservoir by controlled directional wells. Directional deviation should be dependent on the geological environment, in particular, on the in-place permeability.

The paper considers a number of practices aiming to improve development of multilayered oil reservoirs through directional deviation of wellbores in non-uniform permeable formations resulting in better conformance control of injection wells and improved fluid movement profile in producing wells.

The offered methods of oil reservoirs development allow delaying water breakthrough because of the improved vertical conformance.

 

Key words: reservoir; layer; well; well pattern; water cut; reservoir pressure; permeability; equipment; dual production; injection.

 

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UDC 622.076.053

 

THEORETICAL AND LABORATORY STUDIES OF A DEVICE WORK

USED FOR LIQUID PULSE PUMPING IN A WELL (đ. 16)

 

Marat Yakhievich Khabibullin,

Rustem Iskhakovich Suleymanov,

Alexander Yurievich Davydov

 

Ufa State Oil Technical University, branch in Oktyabrsky-city

54-a, Devonskaya str., 452607, Oktyabrsky-city, Republic of Bashkortostan, Russian Federation,

e-mail: m-hab@mail.ru, rustamsul@rambler.ru, alex-dy@yandex.ru

 

Some device to be used for pulsed injection of fluids into a well at single treatments and long stationary prolonged effect is developed. The article describes the design of the device. Mathematical expressions applied for the selection of the device’s optimal design dimensions with account of the necessary output parameters required for functional purposes. The developed laboratory unit was used for bench-testing of the developed device. The results confirm the presented theoretical studies. Laboratory and theoretical studies resulted in the possibility of selecting the optimum device design.

 

Key words: device for pulsed injection; walking beam; guiding device; clip; non-linear vibrations; elliptic integral; frequency range; amplitude; pressure.

 

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UDC 622.243.92

 

SOME SPECIFIC FEATURES OF WELLS AND TOOLS WASHING

IN CASE OF REACTIVE-TURBINE DRILLING (đ. 21)

 

Dmitry Yurievich Serikov

 

Gubkin Russian State University of Oil and Gas

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

e-mail: serrico@rambler.ru

 

Some specific features of washing of wells and rolling-cutter drill bits in case of reactive-turbine drilling are described. The basic directions of motion of flushing fluid flows both in the well bottom zone and in the annulus in case of reactive-turbine drilling are identified. The analysis of the conditions of slurry particles relative motion in a wellbore annulus in case of a reactive-turbine drilling, characterized by a small concentration of particles in the slurry mixture and small particles in relation to the channel’s size, is carried out. The process of cuttings hydraulic withdrawal up to the surface in case of reactive-turbine drilling as well as dependence of its effectiveness on the particles’ size of the destroyed rocks is described.

It is found out that removal of the rock-receiver from the well face limits the effectiveness of mechanical lifting onto the surface of large fractions of sludge and only to a small extent reduces crushing of rocks. The optimal capacity of the rock-receiver that provides maximum efficiency of water-jet drilling equipment is defined. The basic principles of jetting nozzles work is described and the necessity of use of rolling cutter drill bits in conditions of reactive turbo drilling only together with central water-jet flushing scheme is substantiated.

 

Key words: reactive turbo drilling; rolling-cutter drill bit; jet nozzle; cleaning of a well bottom.

 

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UDC 622.279.542.78

 

DEVELOPMENT OF A SUSPENDED COMPRESSOR DESIGN SUPPLIED

WITH A HYDRAULIC SEAL TO BE USED IN AN OIL WELL (đ. 27)

 

Alexander Vladimirovich Sevastyanov,

Yury Valentinovich Nigay,

Roman Sergeevich Tretyakov

 

LLC "SPB "Areopag"

22, bld. 1, let. A, apart. 36-N, Bogatyrsky prosp., 197372, St. Petersburg , Russian Federation,

e-mail: areopag-spb@yandex.ru

 

Shamil Grigorievich Mingulov

 

"Tuymazaneft" Oil and Gas Production Department, LLC "Bashneft-dobycha"

13, Severnaya str., 452607, Oktyabrsky-city, Republic of Bashkortostan, Russian Federation,

e-mail: info_bn@bashneft.ru

 

Marat Davletovich Valeev

 

LLC NPP "VM-system"

12, Bld. 3, 8 Marta str., 450083, Ufa, Republic of Bashkortostan, Russian Federation,

e-mail: VM5943@mail.ru

 

Pressure increase in the annulus stimulates growth of anti-pressure on a formation and, consequently, reduction of fluid inflow to a well bottom followed by "squeezing" of the dynamic fluid level before receiving by the pump, gas entry to the pump, decrease in its delivery and its emergency failure. Particularly acute this problem is observed at high pressures in the wells flow lines and in the initial sections of oil-gathering system.

Various geological-field conditions of fields’ operation require use of technical equipment and technologies of forced gas withdrawal from the annulus in order to increase wells production flow-rate.

One of the most effective engineering solutions to increase productivity of wells equipped by sucker-rod pumping units is the use of suspended compressors for forced gas with drawal from the annulus, which are mounted on the pumping units. However, when increasing pressure in the flow manifold up to 1,5 MPa and more, use of suspended compressor becomes ineffective due to the increase of gas leakage through the gap between the plunger and the cylinder.

The paper describes the updated design of a piston compressor with high compression ratio. High level of compression is reached by filling the gap between the piston and the cylinder of the compressor by liquid (oil), which results in elimination of leakages through it. The developed theoretical grounds of calculation of hydraulic resistance to the rod movement in the oil-filled cylinder of a piston compressor are presented. They proved significant resistance due to the small clearances between the piston and the cylinder.

 

Key words: producing well; well flow-rate; downhole sucker-rod pump (SRP); pumping unit; suspended compressor; output line; gas pressure; compression ratio; gas withdrawal; annulus; dynamic level; borehole pressure (BHP); discharge and suction valves; check valve.

 

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UDC 612.273:543.8

 

CARBONYL COMPOUNDS OF INDUSTRIAL OILS (đ. 33)

 

Natalya Vadimovna Ermolaeva,

Maria Sergeevna Artemyeva

 

Moscow State Technological University (Stankin)

3A, Vadkovsky pereulok, 127994, Moscow, Russian Federation,

e-mail: ermolaeva_n_v@mail.ru

 

Yury Vasilievich Golubkov

 

Chromatography-mass spectrometric method was applied to study molecular composition of I-20A and I-40A industrial oils, manufactures by different companies, was researched with the chromatography-mass spectrometric method. More than 200 toxic compounds, including about 100 oxygen-containing, were identified in oils. Among the lather ones there were identified about 20 aldehydes and ketones, which refer to the most toxic air pollutants. Aldehydes of the researched industrial oils are marked by dominance of cys-isomers, being the derivates of alkens. It is demonstrated that the molecular composition of oils of every brand manufactured by several companies differs much. The environment protection measures from the determined toxic compounds are proposed.

 

Key words: industrial oil; oil-based lubricants; carbonyl compounds; environment protection.

 

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UDC 621.643:621.794.4

 

ETCHING OF A PIPELINE AFTER ITS INSTALLATION (đ. 37)

 

Alexander Vladimirovich Marakhovsky

 

LLC "ASGARD SERVICE"

20, bld. 2, apart. II, room. 6, Academician Pilyugin str., 117393, Moscow, Russian Federation,

e-mail: Alexander.110@yandex.ru

 

Leonid Alexandrovich Maryushin

 

Moscow State Mechanical-Engineering University (MAMI)

16, room 2401, Avtozavodskaya str., 115280, Moscow, Russian Federation,

e-mail: marushinla@gmail.com

 

The article presents a hands-on experience in controlled cleaning of the inner surface of a medium-pressure gas pipeline with the help of chemicals. Several methods recommended by the manufacturer of the equipment are tested, and to determine the optimal method and treatment mode are defined with account of some specific features of the object using a special installation. The definite data of temperatures and time intervals, pH of solutions that allow even an experienced staff to make the right decision for such an effective treatment are given. Economic components of various treatment techniques are considered.

 

Key words: cleaning of the inner surface; chemical reagent; neutralization and washing; operational mode; economic components of various methods influence.

 

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UDC 622.276:621.312

 

CURRENT STATE AND PROSPECTS FOR REDUCE HEAT LOSSES

IN CABLE LINES OF HIGH POWER ELECTRIC SUBMERSIBLE PUMPING UNIT (ESP)

IN JSC "NK "ROSNEFT" (đ. 40)

 

Sergey Borisovich Yakimov

 

JSC "NK "Rosneft"

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

e-mail: s_yakimov@rosneft.ru

 

Heat losses in cable lines when operating wells equipped with electric submersible pumps (ESP) with high power consumption remain the urgent problem, yet not completely solved by JSC "NK "Rosneft". ESP fund, using current of 75 A and more, makes 223 wells. The maximum current values reach 130 A and more thus causing large heat losses in the cable lines. Excess losses of electric power in the mentioned group of ESP are estimated at about 50 thousand kWh. However, the existing ratio of electric power tariffs and the cost of energy-efficient equipment make the projects of heat losses reduction economically inexpedient.

The article analyzes the prospective technologies currently used in oil and gas producing companies of JSC "NK "Rosneft" which allow an acceptable economic efficiency reducing heat losses in cable lines. Some conclusions about the economic feasibility of using the cable with the conductor’s cross section of 50 mm2 are presented. The recommendations on the feasibility of wider use of higher-efficient ESP and testing of promising technologies to reduce the current, such as submersible AC electric motors (SEM) of 300 kW power or more are submitted.

 

Key words: energy efficiency increase of mechanized production; energy consumption; energy efficient reduction; energy efficient design; reduction of heat losses in cable lines; power consumption; asynchronous and submersible AC electric motors (SEM); cable cross-section optimization; energy efficient ESP; optimization of tubing diameter.

 

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UDC 622.276.1/.4

 

NEW TECHNOLOGIES OF OIL FIELDS DEVELOPMENT FOR ENHANCEMENT

OF OIL RECOVERY FACTOR AND PERSPECTIVE OF THEIR DEVELOPMENT

IN THE REPUBLIC OF BELARUS (đ. 47)

 

Nikolay Alexandrovich Demyanenko,

Petr Petrovich Povzhik,

Anton Valeryevich Serebrennikov,

Vasily Gavrilovich Zhoglo,

Victor Gennadyevich Pysenkov,

Victor Vladimirovich Privalov,

Nikolay Ivanovich Budnik

 

Republican Unitary Enterprise "Production Association "Belorusneft"

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

e-mail: povzhik@beloil.by

 

Oil deposits of the Republic of Belarus have a wide range of geophysical properties of reservoir-rocks. The majority of the fields have no edge water zone effect, that’s why deposits are developed with formation pressure maintenance. In a number of cases conventional development technologies don’t bring significant increase of oil production, and vice versa make the situation worse by decreasing it. In this connection for such deposits there developed and implemented unconventional development technologies.

The technology of intermittent recovery-injection has been implemented in the deposits, the cross-sections of which have intervals with “super-reservoirs” since 2004. The technology allows decreasing pressure drops between injection and recovery zones, thus decreasing of the displacing agent breakthrough over the inter-layers of super reservoirs rocks and the intensity of products water cut growth.

Enhanced oil recovery (EOR) technologies, such as extensive and cyclic reservoir stimulation are implemented in the deposits being at the latest stage of their development. Implementation of these technologies has lately proved their efficiency and due to decrease of products water cut allowed achieving additional oil production.

Among recently discovered oil fields a group of more than 50 small oil fields stands out. 115 deposits were opened by single wells in these fields. Geological oil reserves of these deposits, as a rule, do not exceed 200…300 thousands of tons. In this connection, drilling-in of these deposits by additional well stock is economically unviable. The typical feature of such deposits is the lack of edge water zone effect. That’s why they are developed by elastic-closed regime until total depletion of reservoir energy is reached. In addition, oil recovery factor does not exceed 10…15 %. Enhancement of oil recovery factor of these deposits up to 30…45 % allows additionally producing up to 10…15 mln tons of oil. For these types of deposits there developed, being developed tested a number of technologies of deposits’ development by single wells, which allow enhancing oil recovery factor up to 30…45 %.

 

Key words: development; technology of intermittent recovery-injection; oil recovery enhancement; cyclic stimulation; decrease of water cut; incremental oil production.

 

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UDK 622.276

 

ASSESSMENT OF RHEOLOGICAL CHARACTERISTICS

OF ANOMALOUS OILS AND OIL EMULSIONS (đ. 55)

 

Abbas Geydar Rzayev,

Ilaha Afsar Nurieva

 

Institute of control systems, NASA

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

e-mail: abbas_r@mail.ru

 

Gyulshan Rasul Mustafayeva,

Vusal Vagif Orudzhev,

Sakit Rauf Rasulov

 

Azerbaijan State Oil and Industry University

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

e-mail: rasulovsakit@gmail.ru

 

Mathematical models allowing to determine shift stress, volume speed of oil flow and pressure drop in the reservoir capillaries, lifting pipe and fluid pipeline have been developed depending on flow behavior index (variant 1); modified form of Hagen – Poiseuille filtration law has been obtained considering unsteadiness of rheological characteristics of anomalous oil (variant 2); mathematical model of the dependence between shift stress and speed has been offered using Calvin – Voight`s model and Laplace transform. Methodology of determining of temporary characteristic of transient process using the method of tangents (variant 3) has been offered; mathematical model that allows determining viscosity of oil emulsion depending on viscosity of disperse matter (oil) and volume fraction of disperse phase (emulsified water drops) (variant 4) has been developed.

 

Key words: anomalous oil; oil emulsion; rheology; viscosity; volume speed; shift speed.

 

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UDC 543.544

 

MODERN METHODS OF TOTAL SULFUR DETERMINATION

IN NATURAL GAS (đ. 58)

 

Boris Dmitrievich Donskikh,

Igor Nikolaevich Zhiltsov,

Alexander Alexandrovich Makinsky,

Tatiana Vladimirovna Maximova

 

LLC "Gazprom VNIIGAZ"

POB 130, 115583, Moscow, Russian Federation,

e-mail: B_Donskikh@vniigaz.gazprom.ru, I_Zhiltsov@vniigaz.gazprom.ru, A_Makinsky@vniigaz.gazprom.ru, T_Maximova@vniigaz.gazprom.ru

 

Due to the introduction of a new parameter of natural gas quality, delivered and transported through the main gas pipelines, namely, the total mass concentration of sulfur, the standards identifying the methods of measurement of the above-said parameter have to be analyzed.

The new parameter’s implementation is to prevent corrosion and to form pyrophoric compounds in the pipeline and is driven by the desire to comply PJSC "Gazprom" standards with the international ones and to bring the quality of Russian gas into conformity with requirements of the European consumers.

It is revealed that the only method to have all the necessary metrological characteristics and a sufficient level of automation is UV fluorescence, all other methods having significant drawbacks.

Three methods are proposed to determine the total sulfur using a chemical luminescence detector. Among them the method that allows determining the total sulfur using the same separation column as for the identification of individual sulfur components in natural gas, but at maximum possible values of temperature and the gas-carrier flow, with the aim of forming the group peak of total sulfur.

The developed method has a short run time of measurement and acceptable levels of uncertainty measurement. Together with the UV fluorescence method, it can serve as a foundation for the development of a new standard test method at a national level.

 

Key words: natural gas; sulfur compounds; total sulfur; national standard; measurement method; gas chromatography; chemical luminescence detector; ultraviolet (UV) detector; measurement uncertainty.

 

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UDC 622.245

 

DEVELOPMENT OF EQUIPMENT AND TECHNOLOGIES

FOR CAVITATION-IMPULSE RESERVOIR STIMULATION IN CONDITIONS

OF OIL FIELDS OF "BELORUSNEFT" PRODUCTION ASSOCIATION (đ. 63)

 

Dmitry Viktorovich Tkachev,

Anton Valerievich Serebrennikov

 

Republican Unitary Enterprise "Production Association "Belorusneft"

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

e-mail: d.tkachev@beloil.by

 

Viktor Mikhailovich Tkachev

 

Pavel Sukhoi Gomel State Technical University

48, Oktyabr prosp., 246746, Gomel, Republic of Belarus,

e-mail: vmtkachev@gstu.by

 

The paper discusses the experience of development and operation of the device and technology for integrated treatment of production wells, based on hydrodynamic cavitation wave stimulation of near-well zone of oil and gas reservoirs. The results of simulation studies of a designed pulsator with construction of fields’ velocities distribution, direction of current lines and ratios of liquid and gas phases in a simulated area of the well are presented in the paper. The effectiveness of the pulsator used for acid treatments of wells with depths of more than 2000 m is demonstrated.

Bench and field tests proved the expected positive results. Considering the effective and mean-effective work on implementation of the technology of cavitation-impulse stimulation on five objects of Production Association "Belorusneft", the success ratio makes 80 %. Increase of productivity factor in relative expression is up to 60 %.

 

Key words: enhanced oil recovery; hydrodynamic oscillation generators; simulation of generated cavitation processes in a well; decolmatation; field tests of a pulsator-cavitator.

 

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UDC 62-83:621.6-7

 

SOME SPECIFIC FEATURES OF REPAIR DOCUMENTATION

FOR OVERHAUL OF A MULTI-WAY PLUG VALVES (đ. 68)

 

Maxim Nikolaevich Kazantsev,

Ilya Alexandrovich Flegentov,

Stanislav Nikolaevich Zozulya

 

LLC "Research Institute of Transneft"

47a, Sevastopolsky prosp., 117186, Moscow, Russian Federation,

e-mail: KazancevMN@niitnn.transneft.ru, FlegentovIA@niitnn.transneft.ru, ZozulyaSN@niitnn.transneft.ru

 

The paper considers some specific features of development of repair design and normative-technical documentation to be required for carrying out capital repair of multiway plug valves of domestic or foreign manufacture which are in operation at main oil pipelines.

The development is possible on the basis of analysis of sketches and drawings obtained when analyzing plug valves structures, subjected for repairing, plug valves operational documentation received together with the contracts for plug valves delivery, information about defects which appear when testing and operating plug valves of some definite type or similar plug valves of other types, analysis of non-failure indicators, serviceability, plug valves’ long-time operational period and preservation capacity during operation before the repair and in time between repairs, information about repair of similar plug valves.

The result is a set of repair documentation for carrying out capital repairs.

 

Key words: capital repair; plug valve; repair documentation; economic efficiency.

 

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

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