Aleksey A. Alhimenko

• Managing Director at Peter the Great St.Petersburg Polytechnic University

As a result of this study, it was determined that production in an open induction furnace is the sufficient technology for smelting shape-memory alloys (SMAs) based on the Fe–Mn–Si system. It has been found that the high rates of crystallization are necessary in order to obtain a homogeneous, fine-grained cast structure. A procedure for determining...

Super 13Cr steels, which combine high strength and excellent corrosion resistance, are the optimal choice for developing and exploiting complex oil and gas wells, particularly in high-CO2 environments. In this study, we conducted a corrosion assessment of several high-strength steels of the 13Cr type with different alloying systems. We identified t...

The use of traditional materials leads to failures and breakdowns of expensive equipment, so advanced materials are needed that can provide reliable and durable solutions. The ability to control the quality of duplex stainless steels (DSSs) can greatly help with the development of new compositions or choosing existing DSSs. In this case, it is nece...

High-strength oil country tubular goods (OCTG) like C110, according to standard API 5CT (yield strength at least 758 MPa), are subject to requirements in terms of mechanical and corrosion properties. In this work, we studied the microstructure of seamless casing tubes made of class C110 high-strength steel with a 194.5 mm diameter and 19.7 mm wall...

Inclusions in steels and alloys are known to lower the resistance to deformation, as well as to lower the mechanical, corrosion and other properties. Studies of inclusions in nickel-based alloys are important since these materials could suffer from corrosion degradation in harsh operational conditions. This, in fact, could lead to a pitting initiat...

Inclusions in steels and alloys are known as factors that could lower deformation, mechanical, corrosion and other properties. Study of inclusions in nickel based alloys is important since these materials could suffer from corrosion degradation in harsh operational conditions, where inclusions could lead to a pitting initiation. For estimation of a...

The most damaged elements of oil field pipelines are welded joints, the life of which often does not exceed one or two years. The problem of anticorrosive protection of internal surfaces of welded pipe joints has not been solved to date. In this paper, the possibility of applying powder protective stainless coatings to the inner edges of the pipe a...

The use of stainless steels with anticorrosive properties is common in various industries where operation takes place in aggressive conditions. However, most products and structures cannot do without a welded joint. The chance of corrosion processes in the weld metal and the heat-affected zone is higher compared to other parts of the product due to...

In the manufacture of large-diameter welded pipes used for the construction of pipelines operating at high pressure, it is extremely important to provide the required mechanical and service characteristics. One of the main tasks of improving the quality of each batch of sheet metal, while maintaining or reducing the cost of production of pipes, i...

The increase in the corrosiveness of the produced fluid forces to reconsider the attitude towards the assessment of the serviceability and reliability of oil pipes, paying attention to the problems of increasing their corrosion resistance. The paper analyses environmental impact on pipeline made of 9MnSi5 steel after 12 months of operation in the o...

This paper presents the main research results and examples of structural aluminium alloys (SAA) effective use in the oil and gas wells construction onshore and offshore. The known application cases are drill pipes, tubing and casing. Competitive properties of SAA for hydrocarbons exploration and production were identified as strength-to-weight rati...

When screens are used as the sole means of sand control, they function as a downhole filter. The entry of sand or other particles into horizontal and vertical wells presents the problem of steel erosion and productivity lost. Downhole is the most desirable location to restrict its access into the well. The problem of material reliability testing is...

Emergency equipment failures at oilfield pipelines are often associated with corrosion damage of the pipe material. Optimization of the chemical composition of the used steel can play a significant role in increasing the corrosion resistance under the condition of ensuring the metallurgical quality of pipes. This article presents a comparative asse...

Weatherproof steels are highly resistant to various forms of corrosion. Their long-term tests have shown that constructions of these steels can be used in conditions of the Russian climate for years without significant corrosion damage even without any protection. They are considered to be the most promising for the construction of bridges and over...

This article continues and extends the topic addressed at the last conference held in Moscow in 2011 - prospects of aluminum tubes in well construction in the Arctic1. In addition to well-known successful practices of using aluminum drill pipes, it highlights the results of manufacturing and application of tubing and casing, as well as risers made...