Analysis of the reasons for the accelerated failure of oil pipelines in the regions of the Far North and Siberia

Peter the Great St. Petersburg Polytechnic University, 195251, Polytechnicheskaya st., 29, St. Petersburg, Russia

^* Corresponding author: shaposhnikovno@gmail.com

Abstract

From about the time trends of development of oil gas complex of the country requires reassess the reliability and durability of pipelines for various purposes. The reason for this trend is the gradual displacement of the producing provinces towards regions with extremely low climatic temperatures, difficult natural conditions, and highly aggressive components of the oil production. Analysis of the reasons for the accelerated destruction of pipes in the northern regions of the country made it possible to identify two main causes of failure. This is the development of corrosion- mechanical defects and insufficient cold resistance and crack resistance of materials at low climatic temperatures. The paper analyzes the role of non-metallic inclusions in increased defectiveness of steel X70 pipes, an analysis of the influence of the microstructure and non-metallic inclusions of operation the pipes in cold climate.