The Study of the Destruction of Pipelines, Subject to Stress Corrosion Cracking

Nasibullina, O.A.; Rizvanov, R. G.

doi:10.4028/www.scientific.net/msf.992.695

Cited by 15 publications

(5 citation statements)

References 12 publications

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“…In most cases, actual corrosion processes are local. It was established that for the occurrence of SCC in stainless steels it is necessary to have an active -passive state of metal [7][8][9][10][11][12][13][14][15][16][17]. However, it is not clear at all how disruption of the passive state of stainless steels, manifested, for example, in the form of pitting, affects the onset of corrosion cracks in chlorocarbon media.…”

Section: Experiments Techniques and Materialsmentioning

confidence: 99%

Influence of Anodization Process on Improvement of Corrosion Resistance of Tubing from Aluminium Alloys

Nasibullina

Pechenkina

2023

MSF

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Full functioning of wells in oil and gas fields is impossible without the use of tubing. Main function of tubing is transportation of gases and liquids produced in productive zone to well surface. In addition, tubing acts as a kind of insulator that protects the gas and liquid transported through them from the walls of the well, and also prevents the occurrence and development of corrosion, deposits of paraffin and asphaltene on casing pipes. The tubing pipe placed in the well is also necessary in order to ensure the carrying out of downhill and repair work, which is regularly necessary. Standard tubin g (tubing) as a result of technological difficulties does not undergo a strengthening operation. When manufacturing tubing and locks to them from alloyed steels, the main attention is paid to improving mechanical properties, which is achieved by thermal and chemical-thermal treatment. However, the practice of operating tubing shows that the introduction of these measures does not solve the issue of reliability, since threaded connections for the coupling and nipple remain vulnerable sections of tubing. Tubing (tubing) during its operation experiences significant loads and is in constant contact with aggressive media, which leads to serious requirements for their quality. The possibility of replacing its production from alloyed steels with aluminum alloys, for example, AlCuMg2 will facilitate the design by 2.5 times, prevent the tendency to stress corrosion cracking (SCC) in a hydrogen sulfide-containing medium and eliminate inhibitory protection. The main disadvantage of aluminum alloys is the tendency to pitting corrosion. It is possible to improve the protective properties of the passive film on aluminum alloys by anodizing.

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Section: Experiments Techniques and Materialsmentioning

confidence: 99%

Influence of Anodization Process on Improvement of Corrosion Resistance of Tubing from Aluminium Alloys

Nasibullina

Pechenkina

2023

MSF

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“…For steel with 9% nickel content, the microstructure of the ringed zone in the welded joint will always be martensitic, even at very low cooling rates (in air) [10][11][12][13][14][15].…”

Section: Investigation Of the Process Of Nickel Impact On Steelmentioning

confidence: 99%

Welding Technology for Liquefied Natural Gas Tanks

Zaripov

Yalchigulov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Liquefied natural gas (LNG) is of great importance in the energy segment of the economy. Natural gas, has a higher calorific value, better fuel efficiency and is more environmentally friendly, thereby gaining more importance compared to oil and coal. Not only does LNG offer greater flexibility in supply, it also has cost advantages for transportation starting from a distance of 2,000 km (at sea) and 4,000 km (on land) respectively. Consequently, the LNG market will grow in the coming decades compared to two other fossil sources - oil and coal. To use natural gas, it is necessary to create safe and economically profitable transportation routes from natural gas deposits to end users. One possibility is to transport gas in a liquefied state, at low temperatures. To ensure safe and reliable storage of liquefied gas at minus 163 ° C, good physical and mechanical properties of the base material and weld (corresponding tank system) are required. To meet these high requirements, appropriate welding methods and welding materials are selected. The paper presents an analysis of activities on the development of new welding materials and improvement of welding technologies for the construction of LNG tanks.

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“…To eliminate this drawback, a number of methods have been used, including the use of corrosion-resistant materials [5][6][7], the use of corrosion inhibitors [8][9][10][11][12], surface passivation [13][14][15][16][17], and the application of corrosion-resistant coatings. The use of corrosion resistant materials is economically inefficient and is associated with difficulties in mounting the tank.…”

Section: Introductionmentioning

confidence: 99%

Selection of Protective Coating System for Tank Inner Surface

Yamshchikova

Nasibullina

2023

MSF

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Inner surface of tanks is subject to corrosion due to constant contact with aggressive medium. The greatest danger from the point of view of possible corrosion destruction of steel is water (bottom, lower belts of the tank) and gas-air mixture (roof, upper belt) due to saturation with aggressive components: hydrogen sulfide, carbon dioxide, salts. Failure statistics show that the main reason for the failure of oil tanks (about 70%) is the corrosive wear of the surface that comes into contact with the aggressive medium. The application of paint coatings on the internal surfaces of steel tanks for the storage of oil and oil products is an effective measure to reduce corrosion and increase the life of tanks. However, there are a great many coatings. From the experience of tank operation, paint coatings of the following types were selected to analyze the effectiveness of corrosion protection: XC-717, EP-0020, FL-777, VN-780. To select the paint coating of the inner surface of the tank, physical and mechanical parameters were determined and calculations of the corrosion rate of the tank walls for the above paint coatings were carried out. After physical and mechanical tests, it was established that the best values of the coating are EP-0020. Thus, it is recommended to use a EP-0020 coating as a passive protection of the inner surface to ensure the durability of the tanks.

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The Study of the Destruction of Pipelines, Subject to Stress Corrosion Cracking

Cited by 15 publications

References 12 publications

Influence of Anodization Process on Improvement of Corrosion Resistance of Tubing from Aluminium Alloys

Influence of Anodization Process on Improvement of Corrosion Resistance of Tubing from Aluminium Alloys

Welding Technology for Liquefied Natural Gas Tanks

Selection of Protective Coating System for Tank Inner Surface

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