Mechanization of the chill casting of parts of oil and gas production equipment

1980 ◽  
Vol 16 (5) ◽  
pp. 255-259
Author(s):  
V. D. Shifrin ◽  
A. S. Nadzhafov ◽  
S. G. Guliev ◽  
V. S. Shakhotkin
Keyword(s):  
Oil And Gas ◽  
Production Equipment ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Chill Casting

scholarly journals ANALYSIS OF THE STATE OF SERVICEABILITY IN THE PROCESS OF WEAR OF ELEMENTS DURING THE OPERATION OF OIL AND GAS PRODUCTION EQUIPMENT

2021 ◽  
Vol 08 (04) ◽  
pp. 87-94
Author(s):  
Sevda Aliyeva Sevda Aliyeva
Keyword(s):  
Oil And Gas ◽  
Production Equipment ◽  
Gas Production ◽  
The State ◽  
Structural Elements ◽  
Structural Element ◽  
Oil And Gas Production ◽  
Total Utility ◽  
Generalized Indicator

The generalized indicator of useful use, depending on the state of individual elements of oil-producing equipment, characterizes the ability of this equipment to perform its function during operation at optimal working time. The generalized indicator of the useful use of operational equipment can be described as the calculated sum of the indicator of the useful use of individual equipment elements. If, during operation, the oil-producing equipment retains its operability due to frequent replacement of its structural and non-structural elements, then such operational equipment is considered by users as outdated. Operating equipment can be divided into 6 categories according to the indicators of suitability. The article analyzes the state of useful use of equipment and, as a result, the total utility of equipment is calculated in accordance with the indicators of useful use by category, and graphs of changes in the state of useful use are constructed. Based on the study of the graphs of the useful use of equipment, it was proposed to conduct an analysis in the following areas: • Evaluation of the design and technological perfection of the equipment by users according to important new parameters. • Determination of equipment compliance with wear standards during operation. Keywords: structural element, wear theory, the usefulness of jam, categories, schedule of changes, reliability.

scholarly journals A method for detecting the early stages of local corrosion processes

2019 ◽  
Vol 121 ◽  
pp. 01003
Author(s):  
Vladimir Blokhin ◽  
Anton Dorosinskiy ◽  
Aleksandr Manjosov ◽  
Andrey Markin
Keyword(s):  
Oil And Gas ◽  
Production Equipment ◽  
Gas Production ◽  
Local Corrosion ◽  
Corrosion Monitoring ◽  
Control Methods ◽  
Oil And Gas Production ◽  
New Approach ◽  
Equipment And Pipelines ◽  
Random Nature

The article discusses the issues of monitoring the parameters of carbon dioxide corrosion of oil and gas production equipment and pipelines. The features of the main control methods traditionally used in the construction of corrosion monitoring systems, both in gas and in oil environments, are described. The article shows the random nature of local corrosion. A new approach to the creation of systems capable of detecting manifestations of local corrosion in real time and corresponding to the concept of “smart” deposits is proposed.

scholarly journals On detection of crack-like welding defects by existing quality control methods

2021 ◽  
Vol 21 (1) ◽  
pp. 89-95
Author(s):  
V. A. Peredelsky ◽  
V. Y. Harchenko ◽  
A. I. Chernogorov ◽  
S. V. Tihinov
Keyword(s):  
Quality Control ◽  
Welded Joints ◽  
Oil And Gas ◽  
Production Equipment ◽  
Gas Production ◽  
Control Methods ◽  
Oil And Gas Production ◽  
Welding Defects ◽  
Sharp Crack

Introduction. The research materials devoted to the operability assurance of welded structures of hazardous technical devices — components of oil and gas production equipment are summarized. The factors determining the operational strength of welded joints and structures are systematized and diagrammed. The causes for the decrease in their service properties are described. We have defined the role of volumetric and crack-like welding defects, which were not detected during quality control at the manufacturing stage and in determining the residual life while in operation, in ensuring the life cycle of the structure. Measures to improve the practice of detecting crack-like defects under visual- and-dimensional and ultrasonic methods of quality control of welded joints are proposed.Materials and Methods. In accordance with SNiP 2.05.06–85, the structures of main oil and gas pipelines, vertical cylindrical tanks, and other oil and gas production equipment (OGPE) are made of dead-killed and semikilled low- carbon and low-alloy steels with tensile strength of up to 686.5 MPa. Regardless of the class and strength level of steel, it should be well welded by all methods prescribed by standard process documentation (SPD). At the same time, regardless of the state of supply, the carbon equivalent Сэкв should not exceed 0.46 %. The research methods are calculation-experimental ones. To calculate the stress-strain state of welded joints, the following methods were used:finite elements (FEM),fracture mechanics using the stress intensity coefficient Kt.Methods of mathematical statistics were used to estimate the geometric dimensions of crack-like welding defects. Welding defects were detected by standard quality control methods prescribed by the SPD and GOST standards.Results. Welded structures operating in the fatigue mode are considered. Some factors characteristic of welded joints are analyzed. It is shown how they affect the formation of strength performance properties. The role of dangerous crack-like defects, which with high probability can be formed in welded joints in the manufacture of structures and during operation, is established. Often, the reason is a decrease in mechanical properties due to aging and loss of plasticity caused by accidental mechanical actions. Note that it is impossible to identify these defects by existing quality control methods, both during the control process under production and during diagnostics while in operation. This reduces the accuracy of predicting the operational life of the welded structure.Discussion and Conclusion. It is proposed to include the following requirements in the SPD:to the quality of welded joints of hazardous technical devices of OGPE,to detection of sharp crack-like defects with a radius of curvature in the range of 1-0.25 mm.However, the reliability of detection of such defects by the control methods used remains low due to the human factor. To increase the reliability of detection of sharp crack-like defects, the directions of improvement of ultrasonic quality control of welded joints are determined.

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