Assessment of technical condition of underwater transitions of main pipelines in real

Ilinykh, M. V.; Nazarova, M. N.; Akimova, E. V.; Palaev, A. G.

doi:10.1088/1755-1315/194/7/072003

Cited by 2 publications

(2 citation statements)

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“…Also, soil settlement is observed during the outflow of excess moisture and during soil compaction under the influence of the pipeline's own weight and pipeline vibrations arising during operation. [16][17][18][19][20] As for pipelines laid in permafrost soils, during their operation, thermokarsts, thermal erosion, solifluction, as well as cryogenic heaving of soils can be observed. As a result, there is a violation of the stability of the pipeline and the deterioration of physical and mechanical properties of its steel.…”

Section: Introductionmentioning

confidence: 99%

Research of the Dependence of the Pipeline Ends Displacement Value When Cutting Out Its Defective Section on the Elastic Stresses in the Pipe Body

Shammazov

Sidorkin

Dzhemilev

2022

IOP Conf. Ser.: Earth Environ. Sci.

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In the process of repairing main oil and gas pipelines with cutting out defective sections, due to the elastic stresses in the body of the pipeline at the end of the first cut, there is a sharp displacement of the pipeline ends on both sides of the cutting site. This sharp displacement poses a threat to the lives of workers, and also complicates the further process of welding a new section of the pipeline due to the need to center its ends relative to each other. At the same time, to reduce the displacement of the ends of the pipeline, it is often pressed down with an excavator bucket before cutting, which contradicts the safety rules for conducting repair work. This article examines the dependence of the displacement value of the ends of the pipeline on the existing elastic stresses in it in order to substantiate the need to take into account the elastic stresses in the body of the pipeline in the used repair methods, as well as the need to develop safe and technologically efficient equipment for fixing the position of the pipeline before cutting and further centering its ends relative to each other.

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Section: Introductionmentioning

confidence: 99%

Research of the Dependence of the Pipeline Ends Displacement Value When Cutting Out Its Defective Section on the Elastic Stresses in the Pipe Body

Shammazov

Sidorkin

Dzhemilev

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…In offshore unstable temperature conditions, flow or other external influences on constant flow can significantly affect performance. Systems and technologies for temperature control are needed to monitor the transportation condition in real time [6].…”

Section: Introductionmentioning

confidence: 99%

Optimal method of Arctic hydrocarbons production-and-supply system implementation

2021

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One of the most important issues in the development of the Arctic shelf is the rationality of transportation. Selection of the optimal method is an integral part of the project, in the framework of which this article is written. Earlier all possible methods and their advantages and disadvantages were evaluated. Within the framework of this article, t optimal method for the development of reserves on the Arctic shelf will be proposed, taking into account the possibilities of development and the effectiveness of subsequent transportation to the importing countries. The risks of gas hydrates were considered. The prospects of development of the Northern Sea Route between Russia and Asian countries are assessed; the cost of transportation of liquefied natural gas and compressed natural gas from the Barents Sea to Central Europe is compared. The hydraulic calculation of the selected section of the gas pipeline network is conducted. The economic calculation of the project as a whole is accomplished. The optimal location of the route in relation to the reserves in the Barents Sea has been chosen. Pressure losses in the selected zone were no more than 12.24 MPa with pipeline pressure from 8 to 16 MPa. In this case, condensation and subsequent formation of gas hydrates are not possible. Using only three sections of the network, the profit of the project will be 223 billion rubles per year. In accordance with this the best way of hydrocarbons realization in the Arctic is a combined method of transportation with modern methods of extraction and pipelaying laying.

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Assessment of technical condition of underwater transitions of main pipelines in real

Cited by 2 publications

References 1 publication

Research of the Dependence of the Pipeline Ends Displacement Value When Cutting Out Its Defective Section on the Elastic Stresses in the Pipe Body

Research of the Dependence of the Pipeline Ends Displacement Value When Cutting Out Its Defective Section on the Elastic Stresses in the Pipe Body

Optimal method of Arctic hydrocarbons production-and-supply system implementation

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