ISSN 0130-3872

Scientific-technical journal

CONSTRUCTION

OF OIL AND GAS WELLS ON LAND AND SEA

                                                                                                     published since 1993

December 2018                               ¹ 12s                                  12 issues per year

 

CONTENŅS

 

Tskhadaya N.D. Opening remarks at the conference 01.11.2018 (p. 6‑10)

 

DRILLING TECHNIQUE AND TECHNOLOGY

 

Tskhadaya N.D., Khegai V.K., Khegai K.V., Syomin V.I. Resonance oscillations of a drill string when drilling deep wells (p. 11‑17)

 

Shaidakov V.V., Melnikov A.P., Chernova K.V., Korobkov G.E. Jet pump for rise efficienct opening of the productive plast (p. 18‑24)

 

EQUIPMENT AND TOOLS

 

Kitaev S.V., Baikov I.R., Smorodova O.V., Syomin V.I. Interpretation of bearings vibrations vibrospectra of gas compressing units by self-organizing systems methods (p. 25‑29)

 

Melnikov A.P., Shaidakov V.V., Syomin V.I. Jet pump operation in a bottom hole’s non-stationary conditions when drilling oil and gas wells (p. 30‑35)

 

DEVELOPMENT AND OPERATION OF OIL FIELDS

 

Demchenko N.P., Krapivsky E.I., Makhno D.A., Syomin V.I. Substantiation of resources transportation technology from Kovyktinsky gas-condensate deposit by pipelines (p. 36‑40)

 

Krapivsky E.I., Krasnikov A.A., Sharygin A.M. Problems that arise during construction of the gas pipeline to Japan and South Korea and the ways of their solution (p. 41‑43)

 

Krapivsky E.I., Sokolov Ts.V., Volkova A.V., Lee Donhi, Sharygin A.M. Perspective project of compressed natural gas delivery by gas vessels through the Black Sea from Russia to the South Europe (p. 44‑51)

 

Kuzbozhev A.S., Birillo I.N., Shishkin I.V., Sharygin A.M. Study of the impact of the wet filler freezing process on the external steel shell state (p. 52‑58)

 

Volkova A.V., Krapivsky E.I., Syomin V.I. Feasibility study of the construction of the offshore storage for compressed gas in the Japan sea (p. 59‑61)

 

Krapivsky E.I., Telepko A.S., Syomin V.I. Artificial production of gas hydrates and their use for pipeless gasification (p. 62‑65)

 

Zorin A.E., Veliyulin I.I., Veliyulin E.I., Tolstov A.E., Sharygin A.M. Some specific features of technical state of the gas pipelines being in operation (p. 66‑70)

 

Kucheryavy V.I., Milkov S.N., Sharygin A.M. Influence of ground foundation plastic deformations on oil pipeline operation capacity during bending with compression (p. 71‑75)

 

Bykov I.Yu., Boreyko D.A., Konovalov V.I., Smirnov A.L. Complex research of fundamental dependences of non-thermal passive methods of diagnostics when developing the techniques to be applied for assessment of technical state of the oil and gas equipment (p. 76‑84)

 

 

Information on the articles

 

 

OPENING REMARKS AT THE CONFERENCE 01.11.2018 (p. 6)

 

Nikolay Denisovich Tskhadaya

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation

 

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UDC 622.248.9          DOI: 10.30713/0130-3872-2018-12s-11-17

 

RESONANCE OSCILLATIONS OF A DRILL STRING WHEN DRILLING DEEP WELLS (p. 11)

 

Nikolay Denisovich Tskhadaya,

Valery Konstantinovich Khegai,

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation,

e-mail: hegaivk@gmail.com

 

Vladimir Ivanovich Syomin

 

LLC "Burovaya tekhnika" Scientific and Production Association

9, bld. 1, Letnikovskaya str., Moscow, 115114, Russian Federation,

e-mail: Symin.V@mail.ru

 

Konstantin Valeryevich Khegai,

 

LLC "Ankon inginiring" Scientific and Production Association

5, Balaklavsky prosp., Moscow, 117639, Russian Federation,

e-mail: ankon2012@mail.ru

 

Numerous studies proved the fact that during rotary drilling at certain combinations of operating parameters (Š0, n0) and mechanical characteristics of the "Drill string – Bit – Bottom hole" system, both torsional self-oscillations and resonant oscillations can occur in a drilling tool, which very negatively affect both the effectiveness of rocks destruction and the durability of the drilling tool. The paper discusses the occurrence of longitudinal resonant oscillations of a drill string when drilling deep wells. The conditions of the occurrence of longitudinal resonant oscillations of a drill string and the ratios that provide the intervals boundaries in which the resonant values of the wells’ depths are found at the corresponding resonant frequencies are obtained.

 

Keywords: torsional vibrations; longitudinal vibrations; self-oscillations; resonance; drill string; bit; bottom hole.

 

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UDC 622.24+621.694.2          DOI: 10.30713/0130-3872-2018-12s-18-24

 

JET PUMP FOR RISE EFFICIENT OPENING OF THE PRODUCTIVE PLAST (p. 18)

 

Vladimir Vladimirovich Shaidakov1, 2,

Alexander Pavlovich Melnikov3,

Katerina Vladimirovna Chernova1,

Gennady Evgenievich Korobkov1

 

1Ufa State Petroleum Technological University

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

 

2Ufa State Aviation Technical University (USATU)

12, K. Marx str., Ufa, 450008, Republic of Bashkortostan, Russian Federation,

e-mail: office@ugatu.su

 

3Geological College Irkutsk National Research Technical University

104, Lermontov str., Irkutsk, 664074, Russian Federation,

e-mail: m1a1p@yandex.ru

 

Qualitative opening of a productive formation during drilling is the key to further effective operation of oil and gas wells. Technically and technologically, this can be achieved by reducing the differential pressure and creating a protective "shield" on the wall of the well, preventing penetration of the drilling fluid with the cuttings into the productive formation. To do this, it is recommended to arrange a bottom hole assembly of a drill string, which includes placement of the jet pump and the jet colmatator, above the bit. The paper presents an improved method of calculation of the jet pump with the colmatator with account of bottom hole conditions during drilling. As an example, the jet pump parameters are determined, and its operating characteristic is presented. The possibilities of optimizing the operating parameters of the jet pump by changing the colmatator’s nozzle diameter.

 

Keywords: drilling; primary opening; differential pressure; jet colmatation; jet pump; hydraulic calculation; head; nozzle; mixing chamber; diffuser.

 

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UDC 621.644.029          DOI: 10.30713/0130-3872-2018-12s-25-29

 

INTERPRETATION OF BEARINGS VIBRATIONS VIBROSPECTRA OF GAS COMPRESSING
UNITS BY SELF-ORGANIZING SYSTEMS METHODS (p. 25)

 

Sergey Vladimirovich Kitaev,

Igor Ravilevich Baikov,

Olga Viktorovna Smorodova,

 

Federal State Budgetary Educational Institution of Higher Education "Ufa State Petroleum Technological University"

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

e-mail: svkitaev@mail.ru, pte@ rusoil.net, olga_smorodova@mail.ru

 

Vladimir Ivanovich Syomin

 

LLC "Burovaya tekhnika" Scientific and Production Association"

9, bld. 1, Letnikovskaya str., Moscow, 115114, Russian Federation,

e-mail: Symin.V@mail.ru

 

Natural gas main transportation in Russia is one of the country's budget-forming industries [1]. The energy efficiency of gas main transportation is determined by the technical state and operation mode of compressor stations process equipment [2]. The article is devoted to the development of special methods for predicting accidents of gas compressing units (GCU) based on the interpretation of the bearing units’ vibration signals of gas compressing units.

With the development of a complex defect that causes difficulties in vibration spectraidentification, it is recommended to use a quantitative criterion, namely, a correlation dimension determined on the basis of a one-dimensional frequency series of the housing’s measured vibration velocity of the OUP TND HPA, as an indicator supplementing the diagnostic base.

It is shown that, when GCU is defect-free, the dependence of the correlation dimension of the strange attractor (v) on the dimension of the embedded space (m) looks like a dependence with asymptotic behavior. If there is a developing defect in the GCU construction, then the function v(m) in the whole range of consideration has a monotonically increasing nature.

 

Keywords: vibro-spectrum; amplitude; correlation dimension; attractor; phase space; deterministic chaos.

 

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UDC 622.24+621.694.2          DOI: 10.30713/0130-3872-2018-12s-30-35

 

JET PUMP OPERATION IN A BOTTOM HOLE’S NON-STATIONARY CONDITIONS
WHEN DRILLING OIL AND GAS WELLS (p. 30)

 

Alexander Pavlovich Melnikov1,

Vladimir Vladimirovich Shaidakov2, 3,

Vladimir Ivanovich Syomin4

 

1Geological College of Irkutsk National Research Technical University

104, Lermontov str., Irkutsk, 640074, Russian Federation,

e-mail: m1a1p@yandex.ru

 

2Ufa State Petroleum Technical University

1, Kosmonavtov str., Ufa, 640043, Republic of Bashkortostan, Russian Federation,

e-mail: v1v2sh50@yandex.ru

 

3Ufa State Aviation Technical University

12, Karl Marx str., Ufa, 450008, Republic of Bashkortostan, Russian Federation,

e-mail: office@ugatu.su

 

4LLC "Burovaya tekhnika Scientific and Production Association"

9, bld. 1, Letnikovskaya str., Moscow, 115114, Russian Federation,

e-mail: Symin.V@mail.ru

 

To improve technical-economic indicators of drilling, quite promising is the use of borehole devices based on jet pumps, which can create an additional mud circulation circuit at the bottom hole, providing for a reduction of differential pressure. The drilling experience proves the fact that, differential pressure maintenance at the minimum allowable level helps to improve the working conditions of the bit, increase the drilling rate, ensuring high-quality opening of a productive formation. Despite the significant amount of the developed constructions and a wide range of applications, the efficiency of using borehole jet pumps does not always meet the necessary requirements. The previous studies have not accounted of the non-stationarity conditions during a jet pump operation in a well bottom zone during drilling. The paper proposes a method of a jet pump calculation with account of the factors that create non-stationarity at the bottom hole when drilling oil and gas wells.

 

Keywords: drilling; differential pressure; colmatation; primary opening; jet pump; ejector; relative head; coefficient of injection.

 

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UDC 622.691.4          DOI: 10.30713/0130-3872-2018-12s-36-40

 

SUBSTANTIATION OF RESOURCES TRANSPORTATION TECHNOLOGY
FROM KOVYKTINSKY GAS-CONDENSATE DEPOSIT BY PIPELINES (p. 36)

 

Natalia Pavlovna Demchenko

 

Ukhta State Technical University

13, Šervomayskaya str., Ukhta, 169300, Republic of Komi, Russian Federation,

e-mail: igntt@ugtu.net

 

Evgeny Isaakovich Krapivsky,

Daniil Andreevich Makhno

 

St. Petersburg Mining University

2, 21st line of Vasilievsky ostrov, Saint-Petersburg, 199106, Russian Federation,

e-mail: eikrapivsky@mail.ru

 

Vladimir Ivanovich Syomin

 

LLC "Burovaya tekhnika Scientific and Production Association"

9, bld. 1, Letnikovskaya str., Moscow, 115114, Russian Federation,

e-mail: Symin.V@mail.ru

 

The article provides an overview analysis of the pipeline construction routes for the transportation of hydrocarbon raw materials from Kovyktinsky field to the People’s Republic of China (PRC). The key specific features are the transportation of hydrocarbons (natural gas and gas condensate) like a liquefied mixture, as well as the choice of the route for the hydrocarbons export to the PRC not by means of connecting to the "Power of Siberia" pipeline, but by choosing an individual route. The advantages of such an option are highlighted. The environmental risks of the said-above options for the pipeline route, a preliminary calculation of the initial investments, the estimated economic effect in terms of the regions gasification program and the development of the gas industry in Russia are analyzed. A schematic diagram of the creation and transportation of the liquefied hydrocarbons mixture by pipelines is described. The stability of the mixture is ensured by the specific mode of transportation – maintaining of a low temperature (in the range –40...–50 °Ń) and a high pressure (12 MPa).

 

Keywords: gas condensate; Kovyktinsky gas condensate field; natural gas; mixture of liquefied hydrocarbons.

 

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UDC 622.691.4          DOI: 10.30713/0130-3872-2018-12s-41-43

 

PROBLEMS THAT ARISE DURING CONSTRUCTION OF THE GAS PIPELINE TO JAPAN
AND SOUTH KOREA AND THE WAYS OF THEIR SOLUTION (p. 41)

 

Evgeny Isaakovich Krapivsky,

Anton Andreevich Krasnikov

 

St. Petersburg Mining University

2, 21st line of Vasilievsky Islad, Saint-Petersburg, 199106, Russian Federation,

e-mail: eikrapivsky@mail.ru

 

Alexander Mikhailovich Sharygin

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation,

e-mail: igntt@ugtu.net

 

This article discusses the main problems of a gas pipeline construction to Japan and South Korea. The technology of the pipeline construction in the form of a "double snake" in seismically hazardous zones is proposed.

 

Keywords: gas pipeline construction; seismic activity; route.

 

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UDC 622.279          DOI: 10.30713/0130-3872-2018-12s-44-51

 

PERSPECTIVE PROJECT OF COMPRESSED NATURAL GAS DELIVERY BY GAS VESSELS
THROUGH THE BLACK SEA FROM RUSSIA TO THE SOUTH EUROPE (p. 44)

 

Evgeny Isaakovich Krapivsky,

Tsevelin Valeriev Sokolov,

Anastasia Vladimirovna Volkova,

Lee Donhi

 

St. Petersburg Mining University

2, 21st line of Vasilievsky ostrov, Saint-Petersburg, 199106, Russian Federation,

e-mail: eikrapivsky@mail.ru, tsvetelin_sokolov@abv.bg, anastasi1995v.volk@mail.ru

 

Alexander Mikhailovich Sharygin

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation,

e-mail: igntt@ugtu.net

 

The expediency and possibility of compressed natural gas transportation from the already constructed "Russkaya" compressor station (near Anapa) to Bulgarian port of Burgas (or Varna) has been substantiated. The developed technology allows to ensure the natural gas supply to the Southern Europe, while the requirements of the 3d EU energy package are being fulfilled. The natural gas already compressed at "Russkaya" compressor station up to 280,8 atm (28,5 MPa) is proposed to be load into specialized cylinders made of composite materials, then into sea containers and transport compressed gas by container ships at the distance of 810 km to the Bulgarian port of Burgas (or Varna). Further, the compressed gas is transported by large-cargo container ships to the countries of the Southern Europe. Transportation of compressed gas by specialized ships and barges is also considered.

The technology includes the construction of a container terminal for 20-foot sea containers (TEU) of 300000…500000 capacity in Anapa region, a specialized multipoint filling station for sea containers with pipes, gas delivery by sea to Bulgaria, construction of a marine underwater mobile tank farm for compressed gas storage. Productivity of the first stage is 15,75 billion cubic meters of gas per year.

The use of the sea transportation technology of compressed natural gas will provide an economic effect of billions of dollars. The developed technology complements the gas supply via "Turkish Stream" offshore pipeline, which is likely to be built only in 2020. Test deliveries of compressed gas can already start in 2017.

 

Keywords: compressed gas; composite cylinder; container ship; sea transportation; marine storage; container berth.

 

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UDC 622.692.4.004.14(211)          DOI: 10.30713/0130-3872-2018-12s-52-58

 

STUDY OF THE IMPACT OF THE WET FILLER FREEZING PROCESS
ON THE EXTERNAL STEEL SHELL STATE (p. 52)

 

Alexander Sergeevich Kuzbozhev,

Igor Nikolaevich Birillo,

Ivan Vladimirovich Shishkin,

 

LLC "Gazprom VNIIGAZ", a branch in Ukhta

1a, Sevastopolskaya str., Ukhta, 169300, Republic of Komi, Russian Federation,

e-mail: a.kuzbozhev@sng.vniigaz.gazprom.ru, i.birillo@sng.vniigaz.gazprom.ru

 

Alexander Mikhailovich Sharygin

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation,

e-mail: igntt@ugtu.net

 

 

A set of studies was carried out to determine the causes of destruction of piles’ outer steel shells used when constructing industrial facilities in the permafrost zone. The influence of the freezing process of wet filling material placed in a metal steel shell on its stress-strain state was experimentally determined using two pipe samples from piles’ electric-welded pipes fragments installed in industrial facilities of the Yamal Peninsula.

The results of experimental studies have shown that when filling the inner space of a steel thin-walled cylindrical shell with moist soil, regardless of the degree of its humidity, up to full water saturation of the soil, there occurs no destruction of the steel cylindrical shell. Moreover, if the volume humidity of the soil-filler is less than the calculated maximum value, then the soil after freezing in a thin-walled metallic shell pays no effect on its stress-strain state. With the soil bulk moisture, exceeding the calculated maximum value, the soil after freezing in a thin-walled cylindrical shell will exert a force impact on its wall, causing radial deformation of the cross section, but the maximum possible increase of stresses is of no danger to steel thin-walled cylindrical shells with geometrical parameters characteristic of pipes used as piles at the industrial sites on the Yamal Peninsula. The destruction of a steel thin-walled cylindrical shell filled with wet soil is possible only in case of water lens presence and after the soil and lens freezing. Herewith, at the same time, the emergence of a water lens when filling the internal space of a pile of steel pipe is possible only due to a violation of the regulated filling technology, for example, when filling the internal space of a steel pipe of the pile by a non-prepared concrete or cement-sand mortar but a dry cement-sand mixture with subsequent addition of water into it.

 

Keywords: steel shell; wet filling agent; water lens; freezing; force impact; deformation; destruction.

 

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UDC 622.691.4          DOI: 10.30713/0130-3872-2018-12s-59-61

 

FEASIBILITY STUDY OF THE CONSTRUCTION OF THE OFFSHORE STORAGE
FOR COMPRESSED GAS IN THE JAPAN SEA (p. 59)

 

Anastasia Vladimirovna Volkova,

Evgeny Isaakovich Krapivsky,

 

St. Petersburg Mining University

2, 21st line of Vasilievsky ostrov, Saint-Petersburg, 199106, Russian Federation,

e-mail: eikrapivsky@mail.ru, anastasi1995v.volk@mail.ru

 

Vladimir Ivanovich Syomin

 

LLC "Burovaya tekhnika" Scientific and Production Association"

9, bld. 1, Letnikovskaya str., Moscow, 115114, Russian Federation,

e-mail: Symin.V@mail.ru

 

A project of construction of an offshore storage for compressed natural gas (CNG) to refuel specialized vessels is considered. The technology of CNG marine transportation to the ports of Japan and Korea is described. The offshore storage capacity of 40…50 million m3 is substantiated, providing simultaneous refueling of two CNG vessels. Compliance with the life safety standards is discussed.

 

Keywords: compressed gas; transportation; offshore storage tank farm; gas-carrier vessels.

 

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UDC 532.529          DOI: 10.30713/0130-3872-2018-12s-62-65

 

ARTIFICIAL PRODUCTION OF GAS HYDRATES AND THEIR USE
FOR PIPELESS GASIFICATION (p. 62)

 

Evgeny Isaakovich Krapivsky

 

Ukhta State Technical University

13, Šervomayskaya str., Ukhta, 169300, Republic of Komi, Russian Federation,

e-mail: eikrapivsky@mail.ru

 

A.S. Telepko

 

St. Petersburg Mining University

2, 21st line of Vasilievsky ostrov, Saint-Petersburg, 199106, Russian Federation

 

Vladimir Ivanovich Syomin

 

LLC "Burovaya tekhnika Scientific and Production Association"

9, bld. 1, Letnikovskaya str., Moscow, 115114, Russian Federation,

e-mail: Symin.V@mail.ru

 

This article discusses the problems of gasification of settlements remote from pipelines. This fact caused development of the feasibility study of pipeless gasification of such settlements with the help of artificial gas hydrates. The methods of cold generation for gas hydrates artificial production are considered. The methods of hydrates transportation and storage are described as well as a comparison is made with gas supply using LNG.

 

Keywords: gasification; gas hydrates; natural gas; LNG; ice vessel; gas holders.

 

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UDC 622.691.4          DOI: 10.30713/0130-3872-2018-12s-66-70

 

SOME SPECIFIC FEATURES OF TECHNICAL STATE OF THE GAS PIPELINES
BEING IN OPERATION (p. 66)

 

Alexander Evgenievich Zorin,

Ibragim Ibragimovich Veliyulin

 

LLC "EKSIKOM"

43/3, Dmitry Ulyanov str., Moscow, 117036, Russian Federation,

e-mail: I.Veliulin@eksikom.ru, Zorinae86@rambler.ru

 

Edgar Ibragimovich Veliyulin

 

Anatoly Eduardovich Tolstov

 

LLC "Gazpribortehnologia"

15A, office 504, Ugreshskaya str., Dzerzhinsky city, 140091, Moscow region, Russian Federation,

e-mail: Ekos.tolstov@mail.ru

 

Alexander Mikhailovich Sharygin

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation,

e-mail: srg55m@mail.ru

 

The article considers the current state of gas pipelines of PJSC Gazprom. It is noted that, despite the high safety reserves laid down at the design stage of gas pipelines, it is not possible to avoid their destruction during emergency situations. Moreover, a significant role in the causes of gas pipelines destruction is, as a rule, the current state of the pipes metal and the actual specific features of gas pipelines sections operation. The age, as an independent factor, without reference to specific operating conditions, a priori does not reduce the working capacity of gas pipelines.

 

Keywords: gas pipeline; long-term operation; working capacity; metal damage; actual operating conditions.

 

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UDC 624.072.3.04:681.3          DOI: 10.30713/0130-3872-2018-12s-71-75

 

INFLUENCE OF GROUND FOUNDATION PLASTIC DEFORMATIONS ON OIL PIPELINE OPERATION
CAPACITY DURING BENDING WITH COMPRESSION (p. 71)

 

Vasily Ivanovich Kucheryavy,

Sergey Nikolaevich Milkov,

Alexander Mikhailovich Sharygin

 

Ukhta State Technical University

13, Šervomayskaya str., 169300, Ukhta, Republic of Komi, Russian Federation,

e-mail: srg55m@mail.ru

 

A calculation model of joint deformation of ground foundation – oil pipeline system, based on the solution of the differential equation of the oil pipeline sediment during bending with compression is developed with account of the ground maximum resistance in its plastic stage. The model made it possible to adequately assess the stress-strain state of the oil pipeline section laid in a low-lying wetland with account its plastic deformations. Experimental data of the ground maximum resistance in its plastic stage of are fixed by radargrams processing of ground foundation – oil pipeline system. Based on the mathematical theory of an experiment planning, a nonlinear model in the form of a quadratic polynomial is obtained, which allows to predict the maximum deformation of the unstable ground foundation of the oil pipeline caused by its weight and the weight of the filling soil, depending on the ground deformation modulus and the angle of internal friction. At the same time, experimental data of geo-radiolocation monitoring of the ground foundation – oil pipeline system were used. In this case, the ground characteristics change due to its seasonal state changes (for example, thawing, freezing) in the near-pipe zone was established by the frequency range of the reflected radio waves. The comparability of the calculated and maximum settlements of the oil pipeline in unstable low-weight soil allowed to take preventive measures to ensure its stability during bending with compression and to determine the sections of the route where it is necessary to install additional ballasting devices for the oil pipeline fixing. The engineering-geological conditions complexity of the pipeline route increases the parameters of the setting of unstable non-stable ground foundations and in the state of plasticity they can have defects that lead to their destruction due to the ground structure change. Based on this fact, the proposed method of assessment of the foundation strength reliability by the criterion of the biaxial stress-stain state, with account of the specific adhesion of the ground with the pipeline and its internal friction angle is proposed. This led to an efficiency increase of the ground foundation – oil pipeline system.

 

Keywords: oil pipeline; ground foundation; bending with compression; deformation; deflection equation; modulus of elasticity; bending moment.

 

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UDC 621.658.562          DOI: 10.30713/0130-3872-2018-12s-76-84

 

COMPLEX RESEARCH OF FUNDAMENTAL DEPENDENCES OF NON-THERMAL PASSIVE METHODS
OF DIAGNOSTICS WHEN DEVELOPING THE TECHNIQUES TO BE APPLIED FOR ASSESSMENT
OF TECHNICAL STATE OF THE OIL AND GAS EQUIPMENT (p. 76)

 

Igor Yurievich Bykov,

Dmitry Andreevich Boreyko,

Vladislav Igorevich Konovalov,

 

Ukhta State Technical University

13, Pervomayskaya str., Ukhta, 169300, Komi Republic, Russian Federation,

e-mail: ibykov@ugtu.net; dboreiko@ugtu.net; vlad_konovalov93@mail.ru

 

Anton Leonidovich Smirnov

 

LLC "ExpertStroy"

20, Gubkin str., Ukhta, 169300, Republic of Komi, Russian Federation,

e-mail: es-ukhta@mail.ru

 

The paper presents the results of laboratory researches of fundamental dependences of the method of an acoustic emission and the method of the registration of magnetic flow dispersion fields which are carried out to confirm the hypothesis of these methods mechanisms interrelation, bound with the assessment of ferromagnetic materials structural changes under the influence of outer load forces. The plan of further researches when testing the steel samples with artificial defects on stretching and fracture is also presented. The specified researches are required for assessment of passive methods application effectiveness of nondestructive monitoring to evaluate the technical state of the real steel constructions which are operated in the oil, gas and drilling industries.

 

Keywords: nondestructive monitoring; acoustic emission; magnetic flow dispersion; MFL; dependence; defect; load; magnetic field; amplitude; Russian Federal Property Fund.

 

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