Equipment and Technologies for Oil and Gas Complex

The article presents the results of simulation of slide bearings destruction in a drill-bit bearing structure. The optimum ratios of the radii of slide bearings contact surfaces as well as the preferred location of the thrust bearing are determined. The practical use of the proposed assembly of a cone drill bit with the optimized ratio of the radii of the contact surfaces and rationally-placed thrust bearing will significantly improve the service life and reliability of the support units of rolling-cutter drill bits and, as a result – reduce the cost of drilling.

Keywords: rolling-cutter drill bit; bearing.

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UDC 622.276.24

INDUSTRIAL TESTS

OF ADVANCED DESIGNS OF ROLLING-CUTTER DRILL BITS

UNDER REACTIVE TURBO-DRILLING (p. 7)

Dmitry Yurievich Serikov,

Vitaly Anatolievich Yasashin

Gubkin Russian State University of Oil and Gas (Scientific-Research University, NRU)

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

e-mail: serrico@rambler.ru

Alexander Mikhailovich Nazarov

NRB – New Rock Bits

788, Bezrucov str., Turnov, 51101, Czech Republic

The article presents the results of industrial tests of perspective constructions of large-diameter cone bits in jet-turbine drilling conditions. The specific features of promising cone bits with centrifugal-volumetric-reinforced toothed cutting structures, designed specifically to work in the aggregates of jet-turbine drilling, are discussed. The use of various design and technological solutions used when designing and manufacturing the bits’ advanced constructions is substantiated. The place and conditions of comparative industrial testing of series-produced and experimental bits with steel reinforced toothed cutting structures are described.

The specific features of constructions of promising cone bits with hard-alloy toothed cutting structures, designed to be used in a jet-turbine drilling, are considered. The place and conditions of comparative industrial testing of serial and experimental bits with hard-alloy toothed cutting structures are described.

The results of comparative industrial tests of series-production and experimental bits with different types of cutting structures are analyzed. Comparative testing results fully confirmed the bits of the new design operational capacity during their use at present and in future.

Keywords: roller-cutter drill bit; toothed cutting structures; jet-turbine drilling.

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UDC 622.245.44

INFLUENCE OF THE GEOMETRY

OF DOWNHOLE PACKER SEALING ELEMENTS

ON THEIR CHARACTERISTICS (p. 13)

Vasif Talib Mamedov,

Fariz Front Mustafayev

Azerbaijan State Oil and Industry University

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

e-mail: fariz.mustafayev@gmail.com

The article deals with problem of determination of the dependence of stress-compression strain for a downhole sealing packer which is complicated by the non-uniformity of volumetric stress distribution caused by a geometric form and dimensions of packers sealing elements. The coefficient of the rubber shape (sealing) is used to study the influence of the geometric form and the sealing packer dimensions on the deformation characteristic. As the sealing packer is manufactured from some rubber material, its physical properties can be described by means of the function of the deformation elastic energy referred to a volume unit. That’s why the deformation elastic energy, accumulated in the elastic element during compression, that is during operation, characterizes its deformed state. As the elastic element is non-uniform, only experimental researches were conducted

The deformation elastic energy (average value) accumulated in the elastic element, is experimentally determined for a sealing element. This deformation energy is calculated in accordance with the graphic of the axis effort dependence on the deformation of the elastic element.

Keywords: downhole packer; sealing element; deformation; shape coefficient; stress.

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UDC 622.276

UPDATING OF CALIBRATORS’ CONSTRUCTIONS (p. 16)

Dmitry Yurievich Serikov,

Nikolay Mitrofanovich Panin

Gubkin Russian State University of Oil and Gas (Scientific-Research University, NRU)

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

e-mail: serrico@rambler.ru

The article presents the results of the work aimed at updating of calibrators constructions. Based on the analysis of the causes, leading to the drilled wells narrowing within a drill bit single flight, as well as major shortcomings of the constructions of the series-production gauging tools that lead to premature wear out of calibrators during their operation, several options of the constructions of drilling tool of this type have been developed.

The calibrators proposed constructions allow, on the one hand, to improve the reliability and efficiency of their work, and, on the other hand, to simplify the construction as compared to the existing serial analogues, thus reducing the cost of the tool manufacture.

The practical use of roller-cone calibrators’ new constructions makes it possible to significantly improve the efficiency of wells penetration due to the increased operational resource of rolling cutters pins, larger operational durability of cutting structures, good balance of the operational resource of bit legs cutting structures, more reliable housing construction, that ensure trouble-free operation of the tool. All this ultimately will increase the efficiency and reduce the cost of drilling.

Keywords: rolling cutter calibrator; eccentricity; drilling tools; toothed cutting structures.

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UDC 622.24

SHALLOW GAS:

RISKS AND VARIANTS OF TECHNICAL-TECHNOLOGICAL SOLUTIONS

WHEN PROJECTING CONSTRUCTION OF OFFSHORE WELLS (p. 21)

Vadim Evgenievich Petrenko

PJSC "Gazprom"

156, Moskovsky prosp., 196105, St. Petersburg , Russian Federation,

e-mail: V.Petrenko@adm.gazprom.ru

Garry Sergeevich Oganov,

Tatiana Alexandrovna Sviridova

LLC "Krasnoyarskgazprom neftegazproekt"

3, Malaya Gruzinskaya str., 123242, Moscow, Russian Federation,

e-mail: g.oganov@krskgazprom-ngp.ru, t.sviridova@krskgazprom-ngp.ru

The article deals with the problems of projection of offshore wells construction related to the presence of near-surface gas accumulations. Before projecting, within the framework of a well’s construction studies, the research of the upper portion of the section should be obligatory carried out by means of the high-resolution seismic survey that allows to evaluate the risks of detection of shallow gas accumulations. The article presents the decision-making matrix when selecting wells locations in conditions of shallow gas potential manifestations as well as constructions of the wells tops for a variety of depths of shallow gas possible detection. The technical-technological solutions to be reflected on the project documentation on wells construction is also proposed. The possibility of advance drilling of pilot holes in the centers of offshore operational drilling is analyzed.

Keywords: field; project documentation (PD); risk of gas accumulations detection; high-resolution seismic survey; shallow gas; matrix of decision-making; well construction; technical-technological solutions; pilot borehole (well).

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UDC 658.56

PROBLEMS OF IMPLEMENTATION OF LEAN PRODUCTION PRINCIPLES

WHEN ORGANIZING THE STREAM OF TECHNICAL SYSTEMS VALUE (p. 27)

Elena Vladimirovna Plakhotnikova,

Sergey Alexandrovich Vasin

Tula State University

92, Lenin str., 300012, Tula, Russian Federation,

e-mail: e_plahotnikova@mail.ru, vasin_l_a@yandex.ru

The paper presents the main problems of the creation of the product value stream, from a consumer's point of view, when manufacturing technical systems. Shortcomings of the existing system of projection and control over the value creation stream are shown on the example of power-driven isolation valves. The basic directions of improvement of products quality and competitiveness, being the result of the joint work of several engineering companies, are marked.

Keywords: value stream creation; lean production; quality; competitiveness; design process.

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UDC 622.245.1

SUBSTANTIATION OF STABILITY PARAMETERS

OF EXPANDED CASING STRINGS UNDER THE INFLUENCE

OF MECHANICAL AND HYDRODYNAMIC STRESSES

WHEN CONSTRUCTING WELLS (p. 31)

Vyacheslav Vladimirovich Nechepurenko,

Alexander Evgenievich Skorikov

LLC "Krasnodar burenie", a branch of "Gazprom burenie"

19, office 402, Mir prosp., 660049, Krasnoyarsk, Russian Federation,

e-mail: krsk.nechepurenko@krb.burgaz.ru, krsk.skorikov@krb.burgaz.ru

Alexander Vasilievich Mineev

Siberian Federal University

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

e-mail: mineev_bngs.krsk@mail.ru

High-quality well cementing is an important and crucial technological stage when constructing exploration and production wells for hydrocarbon production. The article considers two options of wells walls cementing, such as the traditional way (a casing string lowering followed by cementing) and by means of placing of the expanded casing strings in a pre-advanced widened wellbore without cementing. The latest technology is also known as placement of profile packers into a well and is widely used in case of geological complications (absorption, diking, etc.) to cement wells walls without changing the diameter of wells.

The purpose of the article is the study of the profile packer stability in a well during its further construction. To do this, an experiment was conducted on a well’s model with a profile packer placed in it. The results of the study proved the influence of the well’s diameter size on the profile packer stability under the axial load. It is also found that the expanded drill-pipe casing strings can be used under certain geological conditions instead of the intermediate casing strings.

Keywords: profile packers; expanded pipes; production casing string; ultimate joint strength; axial load; well’s model; well cementing; drill-pipe casing string; intermediate casing string.

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UDC 622.276.654

ONE MORE METHOD OF HEAVY OIL RECOVERY

FROM A FORMATION (p. 33)

Malik Gurban ogly Abdullaev

Azerbaijan State University of Oil and Industry

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

e-mail: malik.abdullayev.52@mail.ru

The article discusses the problem of development of one more method of heavy oil extraction, allowing to reduce oil viscosity and to increase oil recovery of a formation.

The essence of the proposed method of heavy oil extraction from a formation lies in an oxidant injection through the injection well, followed by water-flooding. 10 % mixture of aqueous potassium dichromate or sodium solution added by turpentine in the volume of 0,10…0,90 per 1 m³ of the mixture is injected into the well as the oxidant, herewith, the total amount of the injected agents makes not more than 0.1 of a formation pore volume. In this case the new one is the proposed heat carrier.

The expected economic efficiency as compared to the well-known methods consists of several sources, such as oil recovery enhancement up to 5 %, 5…6 times lower cost of reagents, improved inhibitory ability of the proposed compositions as well as the environmental feasibility of new reagents use.

Intensification of oil production and increase of a formation oil recovery when injecting heat transfers are achieved by oil viscosity reduction, thermal expansion of a formation oil and formation of skeletons as well as by capillary impregnation intensification (for hydrophilic formations). It results in oil mobility and relative permeability increase, reservoir coverage by the displacement agent, thus forming conditions of oil replacement from low-permeable rock pillars due to the counter flow of capillary impregnation.

Keywords: structure; formation; turpentine; sodium dichromate; potassium dichromate; heat carrier; heavy oil; viscosity; oxidizer; oil recovery; solution; chemical reaction.

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UDC 622.276.621

RESEARCH OF POROUS MEDIA FILTRATION PROPERTIES

WHEN USING ELECTRO-CHEMICALLY ACTIVATED WATER (p. 37)

Irina Nikolaevna Yakovleva

Institute of geology and geophysics, NAS of Azerbaijan

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

e-mail: irayak78@yandex.com

The article presents the results of experimental studies carried out to find the influence of electro-chemically activated water on porous media filtration characteristics.

It is determined that, when injecting electro-chemically activated water into a porous medium, a remarkable decrease of mobility factor as compared to the fresh water is observed. It is shown that when filtrating electro-chemically activated water through porous media, saturated with fresh water, pH value increases in time from the values, close to the value of the fresh water, to the values close to the injected electro-chemically activated water.

Based on the studies, in case of a formation stimulation, the possibility of using electro-chemically activated water to regulate working agents mobility is spotted.

Keywords: electro-chemically activated water; fresh water; pH value; permeability; motility factor.

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UDC 622.276(476)

THE RESULTS OF LABORATORY TESTS

CARRIED OUT TO DETERMINE OIL RECOVERY FACTORS

UNDER A CYCLIC STIMULATION BY SURFACTANTS AS WELL

AS DUE TO THE PROCESSES OF CAPILLARY IMBIBITION

OF A CARBONATE-TYPE CORE (p. 40)

Kirill Yurievich Medvedev

Production Association "Belorusneft"

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

e-mail: K.Medvedev@beloil.by

Oil recovery factor is an important parameter when developping fields and reflects the oil potential volume that can be produced using different stimulation agents. The experimental data on the determination of oil recovery factor are of great importance when evaluating fields’ recoverable reserves. Besides, with the data on the oil replacement nature and the value of the oil recovery factor during the waterless and watery periods, it is possible to predict the process of wells water-flooding and to plan complex geological-technical measures aimed at a more complete recovery of oil.

This article presents the results of laboratory tests carried out to determine the oil recovery factors and their increase due to cyclic stimulation, use of surfactants and capillary imbibition conducted on carbonate-type core from the oilfields of the Belarus Republic.

Keywords: core; reservoir; flow; permeability; water-flooding; non-uniformity; pressure differential; oil recovery factor.

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UDC 622.276.52

METHODS OF LIQUIDATION OF LIQUIDS COLUMNS ACCUMULATED

IN GAS-CONDENSATE WELLS BOTTOM (p. 48)

Gyulbakhar Gyulmamedovna Mamedova

Azerbaijan State Oil and Industry University

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

e-mail: gulbahar.mammadova@mail.ru

The article deals with the ways of complications elimination occurring when operating gas-condensate wells.

Due to the fact, that at the latest stage of a gas–condensate field development gas production and gas flow rate in the lifting pipes column are significantly reduced, the liquid phase (condensate) together with gas are not extracted in the full volume. The liquid, accumulated in the well’s bottom area reduces the depression and disorders the normal work of the well. That’s why, in the fields timely extraction of the liquid, accumulated in the well’s bottom area, is done by blowing, that is by removing its production into the atmosphere. However, small values of wells’ bottom pressures in deep wells make application of this method ineffective. So, with account of the above-mentioned facts the article proves the efficiency of the use of surface-active substances (SAS) and new technologies.

New technology and technics make it possible to avoid formation of the liquid column formation in wells at the expense of increase of gas-liquid mixture rate in the lifting tubing. Herewith, it is required to choose such working modes of wells under which there would be no complications. It can happen due to the reduction of the lifting tubes diameter or increase of the rate of liquid flow movement in the lifting tubes.

Keywords: gas condensate; production; new technologies; foam; complications; liquid column.

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UDС 622.692.401(031)

STABILITY OF ELASTIC-PLASTIC STRESS STATE

OF FIELD PIPELINES IN CASE OF THEIR OXIDATION (p. 51)

Sakit Rauf Rasulov,

Vasif Talib Mamedov,

Kamilya Huseynqulu Akperova

Azerbaijan State Oil and Industry University

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

e-mail: rasulovsakit@gmail.ru

The article discusses the problems of elastic-plastic stressed state of field pipelines. Stability during oxidation is associated with pipes materials stress in case of presence of non-equal volume changes, caused by lateral surfaces oxidation.

Relative change of metal, caused by oxidation, is presented by a multi-stage function. At the first stage, the elastic solution of the problem is found taking into consideration the Mises fluidity condition. At the second phase, the occurring plastic flows in the oxide layer are determined. It is proved that prolonged pressure on a pipeline’s surface leads to cracks appearance.

Irregular addition of distribution of volumetric changes are the reason for occurrence of macro-stresses in pipelines similar with thermal tensions in case of non-equal heating. These macro-tensions affect the kinetics of oxidation processes. That’s why, at the beginning the resilient of problems elastic solution is firstly considered and only after that the plastic flows stresses that appear in the oxide layer are researched.

Keywords: pipeline; tension state; oxygen; oxidation; deformation.

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UDC 622.24

HARDWARE-SOFTWARE COMPLEX OF GEOSUPERVISING

OF DRILLING AND DOWNHOLE WORKS (p. 55)

Valery Vladimirovich Kulchitsky,

Alexey Valerievich Schebetov,

Artem Konstantinovich Parkhomenko,

Dmitry Vyacheslavovich Grishin,

Yasin Siriusovich Nasery

Gubkin Russian State University of Oil and Gas (Scientific-Research University, NRU), Research Institute of Drilling Technology

63/2, office 2988, Leninsky prosp., 119296, Moscow, Russian Federation,

e-mail: niibt@gubkin.ru

The proposed hardware-software complex of geo-supervising of drilling and downhole works includes a set of hardware and software required by a geo-supervisor when drilling and downhole operations. One of the elements, that is the mobile station of oil and gas wells geo-supervising (GSV) ensures the implementation of the instrumental control by a geo-supervisor of drilling, development, current and capital repair of wells. The technical problem of a GSV station is to improve technical and economic indicators of drilling and downhole works through reducing the risk of accidents and complications, the time to liquidate them, combining functions of an operator, conducting geotechnical studies, and a supervisor by using one geo-supervisor.

Keywords: hardware-software complex; geo-supervising of drilling and downhole works; supervisor; geo-supervisor; mobile station of geo-supervising.

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UDC 622.276.692

A DEVICE, USED TO DETECT OIL PRODUCTS LEAK AT OIL PIPELINE SECTIONS

BY MEANS OF REMOVABLE METAL CONDUCTORS

(the RF patent for a useful model) (p. 60)

Yury Alexeevich Matveev

LLC "Ulyanovsk Automobile Plant"

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

e-mail: bgd020762@mail.ru

Andrey Yurievich Bogdanov

Federal State Budgetary 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 Economics, Informatics and Control Systems"

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

e-mail: stst57@ya.ru

Dmitry Fedorovich Lavrinenko

Federal State Budgetary Military Educational Establishment of Higher Education Civil Defense Academy (CDA) of EMERCOM, Russia

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

e-mail: LAVR85@INBOX.RU

The utility model refers to the devices used for petroleum products transportation. The device allows diagnosing and identifying the points of petroleum products leakage in a pipeline. The useful model includes removable conductors, communication lines, ohmmeters. In case of petroleum products leakage, the resistance between the conductors changes, what is fixed by ohmmeters.

Keywords: petroleum product; pipeline; removable conductors; drag head; resistance; ohmmeter; leakage.

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UDC 622.691.4

INFLUENCE OF THE FACTOR

PROTECTIVE PROPERTIES CHANGE WHEN OPERATING PIPELINE COATINGS

THAT PROVIDE FAILURE-FREE OPERATION OF PIPELINE SYSTEMS (p. 64)

Alexander Anatolievich Vasiliev

Gubkin Russian State University of Oil and Gas (National Research University, NRU)

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

e-mail: fafner_negodiy@mail.ru

The article examines the influence of the factor of the protective properties changes during a long period of pipeline systems operation on failure-free operation of a pipeline. The main problem under consideration is kinetics of reduction of coatings protective properties, what, in turn, leads to increasing the risk of emergency situations occurrence. The probability of a pipeline damage followed by the losses, caused by the emergency situation, which directly depends on the preservation of the protective coating continuity, is also considered.

Keywords: continuity of a protective coating; risk of emergency situations occurrence; losses caused by an emergency situation; cathodic polarization; failure-free operation.

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UDC 620.179.18

APPLICATION EXPERIENCE

OF NON-CONTACT MAGNETOMETRIC DIAGNOSTICS

OF PIPELINES’ STRESS-STRAIN STATE WITH FOAMED

POLYURETHANE (FPU) INSULATION (p. 67)

Anatoly Alexandrovich Dubov,

Alexander Anatolievich Dubov,

Alexander Alexandrovich Sobranin,

Victor Victorovich Larin

LLC "Energodiagnostika"

8, office XII, Yubileiny prosp., 143965, Reutov-city, Moscow region, Russian Federation,

e-mail: mail@energodiagnostika.ru

Anton Victorovich Ostanin,

Valery Nikolaevich Fadeev

LLC "YARGEO"

12/2, Zverev str., 629730, Nadym, Yamal-Nenets autonomous territory, Russian Federation,

e-mail: yargeo@yargeo.novatek.ru

Sergey Borisovich Kuzmin,

Sergey Nikolaevich Lukin

LLC "IKC "Prombezopasnost"

93A, office 1, Mir prosp., 629810, Noyabrsk-city, Yamal-Nenets autonomous territory, Russian Federation,

e-mail: ikcpb@ikcpb.com

At present, when constructing oil pipelines in the northern territories of Russia, pipelines covered by foamed polyurethane (FPU) insulation are more and more widely used to reduce corrosive wear out. However, in case of pipelines with FPU insulation, due to the less heat losses from the pipe metal as compared to the conventional insulation, the pipe displacement during self-compensation is greater and, accordingly, the stress level in the areas of their concentration is higher. Significant fluctuations of the outside air temperature due to the lack of self-compensation at some separate segments of buried oil pipelines lead to their increased deformation with outcrop to the soil surface. High stress concentration at installation joints of these segments is formed following the development of damages in them.

The article considers the experience of application of non-contact magneto-metric diagnostics to assess the real stress-strain state of a pipeline segments with FPU insulation and to determine the most stressed installation butt joints susceptible to damages development. Recommendations on the concentration level reduction at the oil pipeline segments under consideration are provided.

Keywords: non-contact magneto-metric diagnostics; magnetic memory of metal; stress-strain state; non-destructive testing; oil pipeline; foamed polyurethane (FPU) insulation; pipeline.

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

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