scholarly journals ESTIMATION OF THE VALUE OF OIL LOSS DURING THE SEALING OF THE LINEAR PART OF THE PIPELINE

2021 ◽  
pp. 142-150
Author(s):  
V. T. Bolonny
Keyword(s):  
Linear Part ◽  
Petroleum Products ◽  
System Failures ◽  
Oil Pipeline ◽  
Emergency Situations ◽  
Oil Leakage ◽  
Oil Transportation ◽  
Time Period ◽  
Oil Pipelines ◽  
Pollution Area

The characteristics of the oil transportation system of Ukraine are presented, the emergency risks of domestic oil transportation pipeline sys­tems are established. The analysis of the accident rate of oil pipeline trans­port in Ukraine was carried out. The technique for estimating emergency oil leakages in the main pipeline depending on the energy characteristics of the fluid flow and changes in its level in the cross section is developed allowing to determine the volume of oil leakages into the environment from the de­tection of pressure drop to the establishment of stationary conditions of the pipeline operation and its final stop for the purpose of carrying out repairs. Based on the results of the calculations, the graphs which demonstrate the nature of the formation of soil pollution area by leakage from the pipeline are constructed. The linear part of the main oil pipelines is the most dangerous object, as all emergency situations are associated with emergency processes of dif­ferent intensity in the form of oil leakage into the environment and in fact are dangerous when system failures appear. The process and the time period for the formation of the ecological danger zone depend on the amount of oil leakage, its intensity. Emergency leakages of oil and petroleum products from pipelines enter the environment, which is often the soil, forming an area of gassiness, and then reach the surface, polluting the atmosphere.

From the history of the problem of oil transportation and storage. Contribution of Shukhov V.G.

2021 ◽  
pp. 50-54
Author(s):  
L. R. Yurenkova ◽  
N. V. Bilash
Keyword(s):  
Oil Industry ◽  
Petroleum Products ◽  
Fuel Oil ◽  
Oil Pipeline ◽  
Oil Storage ◽  
Oil Transportation ◽  
Oil Pipelines ◽  
Steel Tanks ◽  
Cylindrical Steel Tanks ◽  
And Storage

A significant part of the oil consumed in the world is transported from production and processing sites to consumers via tankers and pipelines. According to experts' forecasts, the demand for oil and petroleum products in the coming years will be significantly higher than in 2020. In Russia, the oil transportation market is developing in several directions. The main directions are investing in pipeline transport and improving the design of tanks for storing oil and petroleum products. The article considers the contribution of the great Russian engineer V.G. Shukhov to the solution of the problem of oil transportation and storage and in general to the development of the oil industry. In the article "Oil Pipelines" (1884) and in the book "Pipelines and their application in the oil industry" (1894), V.G. Shukhov gave precise mathematical formulae for describing the processes of oil and fuel oil flowing through pipelines, creating a classical theory of oil pipelines. He is the author of the projects of the first Russian main pipelines: Baku-Batumi with a length of 883 km (1907) and Grozny-Tuapse with a length of 618 km (1928). Shukhov V.G. designed and then supervised the construction of oil pipelines of the companies "Branobel", "G.M. Lianozova and sons" and the world's first heated fuel oil pipeline. Working in the oil fields in Baku, Shukhov V.G. developed the basics of lifting and pumping oil products, proposed a method of lifting oil using compressed air — airlift, developed a calculation method and technology for the construction of cylindrical steel tanks for oil storage facilities.

scholarly journals ESTIMATION OF THE MAIN GAS PIPELINE OPERATION UNDER EMERGENCY CONDITIONS OF GAS LEAKAGE

2019 ◽  
pp. 122-131
Author(s):  
V. T. Bolonny
Keyword(s):  
Linear Part ◽  
Pressure Change ◽  
Gas Pipeline ◽  
Oscillatory Process ◽  
Gas Filtration ◽  
System Failures ◽  
Filtration Resistance ◽  
Gas Leakage ◽  
Emergency Situations ◽  
Time Period

The characteristics of the gas transportation system of Ukraine are presented, the emergency risks of domestic gas transportation pipeline sys­tems are established. The analysis of the accident rate of gas pipeline trans­port in Ukraine and Russia was carried out. Presented technique of deter­mining the emergency pressure in the pipeline, depending on the amount of gas losses from pipeline at the point of its leakage provides an opportunity to determine the volume of gas losses from the pipeline and to evaluate the environmental risks due to emergency situations of gas pipeline transport. This technique makes it possible to calculate the pressure at each point of pipeline under nonstationary conditions caused by changes in pressure at the beginning and at the end of the sector and the emergence of concentrated gas leakage. Based on the results of calculations, a graph of pressure change of the oscillatory process in the gas pipeline caused by jump of pressures at the beginning and at the end of the sector, and the presence of probable lea­kages at the determined point of the trace was constructed. The linear part of the main gas pipelines is the most dangerous object, as all emergency sit­uations are associated with emergency processes of different intensity in the form of gas leakage into the environment and in fact are dangerous when system failures appear. The process and the time period for the formation of the gas pollution zone depend on the amount of gas leakage, its intensity and depth of the gas pipeline. The filtration resistance of the soil as a porous medium, in particular its permeability, have a significant effect on the amount of gas leakage through corrosive orifice. As a result, there is a correlation between the amount of gas losses associated with the leakage, and the laws of its filtra­tion in the surrounding soil. As a result, the effect of gas filtration process in the soil in the event of leakage from pipelines has been investigated. The graphic dependence of change in pressure of the filtration resistance of the medium and the time-changing leakage which are designed for different soil characteristics is obtained.

Recording of the Cavitation Phenomena when Modeling Flows in the Trunk Pipelines

2020 ◽  
pp. 7-14
Author(s):  
A.M. Sverchkov ◽  
◽  
S.I. Sumskoy ◽  
Keyword(s):  
Occupational Safety ◽  
Linear Part ◽  
Simple Wave ◽  
Pressure Profile ◽  
Real Problem ◽  
Flow Modeling ◽  
Oil Pipeline ◽  
Emergency Situations ◽  
Hydraulic Shocks ◽  
The Waves

In the article, it is proposed to use a numerical method based on the approach of S.K. Godunov to simulate boiling in a pipeline. The paper presents a statement of the real problem of modeling a water hammer, considering possible boiling of the transported liquid on a real object — an oil pipeline. When solving the problem, two variants of flow modeling when closing the valve installed at the end of the pipeline were carried out. In the first Наука и техника 14 Безопасность Труда в Промышленности • Occupational Safety in Industry • № 11'2020 • www.safety.ru case, the possibility of liquid boiling was not considered. In the second case, this opportunity was considered. The performed numerical simulation showed that in the pipeline in emergency situations, liquid columns can be formed, separated by the cavitation zones and oscillating in different phases, respectively, at the collapse of the cavitation zones, which serve as a kind of pressure dampers, the collisions of liquid columns occur, which can lead, depending on the ratio of velocities, to hydraulic shocks that occur not on the valves, but on the linear part of the pipeline (local hydraulic shocks). The waves from these collapses, interacting with each other, create the new pressure peaks that do not coincide with the pattern of simple wave circulation, which are predicted in the simulations that do not consider possible liquid boiling. As a resul t, the pressures reached in the pipeline during fluid hammer is significantly different from what it would be in the absence of boiling. When boiling is considered, the maximum reached pressures are 40 % higher. Moreover, this excess is repeated. The detailed analysis of the pressure profile in the pipeline is given in the article. Based on the results of solving this problem, it is concluded that when modeling pre–emergency and emergency situations in the pipeline, it is necessary to consider the process of possible liquid boiling, since sometimes, as in the presented case, the values of the pressure surges can be higher than the values of the pressure surges in the liquid without considering boiling, which increases the likelihood of emergency depressurization.

Peculiarities of the operation of the oil pipeline in the process of its cleaning from paraffin deposition

2021 ◽  
Vol 2 (106) ◽  
pp. 77-85
Author(s):  
M.D. Serediuk
Keyword(s):  
Specific Energy Consumption ◽  
Viscoplastic Fluid ◽  
Hydrodynamic Process ◽  
Oil Pipeline ◽  
Available Energy ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Cleaning Device ◽  
Additional Resistance

Purpose: Improving the technology of cleaning the inner surface of the main oil pipelines from paraffin deposition by specifying the hydrodynamic parameters of the movement of the cleaning device in the cavity of the pipeline, by more accurate prediction of the time of its approach to the final point of purification. Design/methodology/approach: Performing theoretical researches and application of mathematical modelling methods in order to establish the regularities of the cleaning device movement in the oil pipeline. Findings: Regularities of changes in the capacity of the pipeline, the speed of the cleaning process, the specific energy consumption for oil transportation as a function of the linear coordinates of the place and time of the cleaning device movement in the pipeline were established. Research limitations/implications: The next stage of research is to establish the influence of the characteristics of the viscoplastic fluid of the paraffin plug on the additional resistance and the mode of the cleaning device movement in the pipeline. Practical implications: It was developed the method that allows predicting the capacity and energy efficiency of the pipeline operation for each point in time of the process of cleaning from paraffin deposition. Originality/value: The originality of the method is the taking into account the additional hydraulic resistance of the paraffin plug and the available energy resources of oil pumping stations on the hydrodynamic process of moving the cleaning device in the oil pipeline.

The Analysis of Ecologically Safe Operation of Oil Pipelines by Methods of the Stochastic Theory of Similarity

2020 ◽  
Vol 24 (10) ◽  
pp. 57-61
Author(s):  
T.V. Zinets ◽  
A.M. Gonopolsky
Keyword(s):  
Stochastic Theory ◽  
Environmental Safety ◽  
Structural Elements ◽  
Safe Operation ◽  
Nature Protection ◽  
Factors Affecting ◽  
Oil Pipeline ◽  
Emergency Situations ◽  
Main Pipelines ◽  
Oil Pipelines

In article it is shown that in the analysis of conditions of environmental safety of the main oil pipelines (MOP) with use of methods of the stochastic theory of similarity, it is necessary to consider not only the MNP design-technology parameters, but also various chemical mass-exchanged processes, for example, corrosion (oxygen, sulphurous and chloric corrosion), influencing changes of structural elements in time and space. For these reasons, dependences between parametrical criteria of similarity and their communications with stochastic criteria of similarity are the basis for the developed model. Comparative analysis was carried out by results of a research more than 70 emergency situations, at transportation of oil through the main pipelines of 18 companies. In parameters of accidents criteria ratios between the factors affecting environmental safety of MNP are received. It is established that average specific intensity of accidents on routes of the sites of the oil pipeline equipped adjustable and unregulated nature protection to constructions and the equipment and also without them, correspond as 1:4.9:83.5. It is shown that a ratio of costs of compensation of ecological damage in case of accidents on routes of the same sites of the oil pipeline equipped adjustable and unregulated nature protection to constructions and the equipment and also without them approximately correspond as 1:1.9:7.5.

scholarly journals DYNAMICS OF PNEUMATIC AND HYDRAULIC TRANSPORT TECHNOLOGICAL EQUIPMENT

Transport ◽  
2004 ◽  
Vol 19 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Marijonas Bogdevičius ◽  
Arvydas Matuliauskas ◽  
Vygantas Mištinas ◽  
Bronislovas Spruogis ◽  
Vladimiras Suslavičius
Keyword(s):  
Method Of Characteristics ◽  
Linear Part ◽  
Technological Equipment ◽  
Hydraulic Transport ◽  
Pneumatic Drive ◽  
Oil Pipeline ◽  
Continuity Equations ◽  
Oil Pipelines ◽  
Pressure Pipeline

In the article the classification of inpipe robots is presented, their advantages and imperfections are reviewed. The schemes of the construction of the wall press walking inpipe robot with a pneumatic drive and an inpipe robot with a vibratory pneumatic drive are given. The analysis of the identification method of leaks occurring due to damages of the linear part of the main oil pipelines is carried out. The momentum and continuity equations of viscous compressible fluid in a pressure pipeline are presented. Differential equations of fluid movement in the oil pipeline are solved by the method of characteristics. Variation diagrams of pressure and velocity of fluid in a leaking oil pipeline are presented. The impulsive extinguishing systems are presented.

scholarly journals DYNAMIC PROCESSES IN THE OIL PIPELINES. PART II. THE LEAK IDENTIFICATION BY NUMERICAL METHODS

Transport ◽  
2003 ◽  
Vol 18 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Ingrida Bajoraitytė ◽  
Marijonas Bogdevičius
Keyword(s):  
Numerical Methods ◽  
Compressible Fluid ◽  
Method Of Characteristics ◽  
Linear Part ◽  
Dynamic Processes ◽  
Viscous Compressible Fluid ◽  
Oil Pipeline ◽  
Continuity Equations ◽  
Oil Pipelines ◽  
Pressure Pipeline

The analysis of identification method of leaks occurring due to damages of the linear part of the main oil pipelines is carried out. The momentum and continuity equations of viscous compressible fluid in a pressure pipeline are presented. Differential equations of fluid movement in the oil pipeline are solved by the method of characteristics. Variation diagrams of pressure and velocity of fluid of a leaking oil pipeline are presented.

scholarly journals The geography of the “Oil pipeline wars” in the context of Russia’s interaction with the countries of the Baltic region

2019 ◽  
pp. 98-106
Author(s):  
T. I. Pototskaya
Keyword(s):  
Black Sea ◽  
Soviet Period ◽  
The Black Sea ◽  
Baltic Region ◽  
Oil Pipeline ◽  
Baltic Countries ◽  
Oil Transportation ◽  
Oil Pipelines ◽  
Oil Export ◽  
The Baltic

The article analyses oil pipelines, the operation of which intersects the interests of Russia and the Baltic countries (Latvia, Lithuania, Belarus, and Poland). By oil pipeline wars we understand the confrontation between the policy of distancing from Russia in oil transportation to Europe and Russia’s policy of creating alternative, more economically effective and safe ways of oil transportation to Europe. Reflecting relations between countries, several groups of oil pipelines have been identified: the main pipelines, alternative ones, and indirectly related to the interests of the Baltic countries. The article describes geographical factors affecting the position of countries in the region analysed: the level of oil supply (Russia), the level of the development of oil refining (Lithuania, Belarus, Poland) and transport and geographical location of the territory. Special attention has been paid to the main instruments used by the countries in this confrontation. The Baltic and the Black Sea strategies of oil export have been analysed from the comparative and geographical points of view. Several important conclusions have been made: there was a redistribution of routes of Russia’s crude oil export to Europe during the post-Soviet period accompanied by an increase in the importance of the marine component (due to the Baltic and the Black Sea ports); there was a weakening of the importance of the Baltic region for Russia’s oil export; and the strengthening of interconnections between Russia’s export oil pipelines. The article stresses the importance of oil pipeline transport for the formation of the barrier function of the state borders of the post-Soviet countries.

ENERGY EFFICIENCY OF OPERATING MODES OF MAIN OIL PIPELINES WITH PERIODICAL PARTIAL OIL DUMPING

2018 ◽  
pp. 151-160
Author(s):  
Y. V. Yakymiv ◽  
O. M. Bortnyak
Keyword(s):  
Energy Efficiency ◽  
Transportation Systems ◽  
Operating Conditions ◽  
Oil Pipeline ◽  
Operating Modes ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Oil Flow ◽  
The Impact

Modern oil transportation systems are characterized by a complex hydraulic structure and geometric configuration, and often require the need for a permanent or periodic pumping or dumping part of the oil flow. The implementation of such transportation technology necessarily leads to changes in the operating conditions of oil pipelines and in accordance with the need to regulate the operation of oil pumping stations. Consequently, determining the patterns of the impact of the process of dumping the part of the oil on the energy parameters of the operation of oil transportation systems is an extremely important task.The influence of periodic dumping the part of oil on the energy efficiency of the operation of main oil pipelines was studied. The impact of volume of discharges on the consumption of power on pumping oil in the system of the main oil pipeline was analyzed. It has been found that with the increase the volume of discharges, the specific consumption of electricity for oil pumping decreases.Based on the carried research, the recommendations on the selection of reliable, safe and optimal pumping modes in terms of cost of electricity for the operation of oil pipelines "Druzhba" in the direction of Mozyr - Brody - Tukholsky pass with periodical partial oil dumping on LPDS "Brody".

Estimation of temporary decommissioning impact on reliability and durability of oil pipelines

2019 ◽  
Vol 1-2 (94) ◽  
pp. 22-31
Author(s):  
L. Poberezhny ◽  
R. Martyniuk ◽  
A. Stanetsky ◽  
L. Poberezhna ◽  
O. Tkach ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Fatigue Strength ◽  
Pressure Fluctuations ◽  
Experimental Studies ◽  
Fatigue Curve ◽  
Pipe Material ◽  
Oil Pipeline ◽  
Oil Transportation ◽  
Oil Pipelines ◽  
The Mathematical Model

Purpose: Due to changes in the volume of oil transportation, part of the pipelines must be temporarily decommissioned. The purpose of the work is theoretical and experimental study of pressure fluctuations during operation of oil pipelines and their impact on the durability of the pipeline material in work state and after temporary decommissioning (conservation). Design/methodology/approach: The results of oil pressure fluctuation research have given a chance to choose the terms of experimental research providing of the pipe metal mechanical features changes research during oil pipeline exploitation. Findings: Fatigue test modes are selected based on the calculations of the mathematical model developed. Experimental studies of the dependence of the fatigue strength of the pipe material on the conditions of operation have been carried out, which made it possible to determine the parameters of the fatigue curve of the samples. Has been defined that fatigue strength for the new metal pipe samples is more for 20-25% than for the metal samples which had the contacts with lime milk and for 30-40% more than for metal samples which were under exploitation. Research limitations/implications: In the future, more combination of "pipe material – preservation medium" should be explored to establish pain of general regularities. Practical implications: The probabilistic curves of the pipeline non-destruction are constructed, which will be used for practical calculations of the reliability and durability of the 13G1S-U steel pipelines. Originality/value: Mathematical model is made that describes non-stationary oil moves in oil pipeline, that has been caused by jump like changes of oil supply in oil pipeline, on this basis was defined, that oil pressure in oil pipeline provides within non stationary process in a range of 0.4-0.6 Hz frequency and amplitude fluctuation of pressure is 0.1-0.5 MPa.

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