Безопасность техногенных и природных систем (Sep 2020)
Problems of corrosion protection during safe operation of pipeline systems and equipment of oil and gas industry
Abstract
Introduction. Organization of safety hydrocarbons transportation is one of the primary objectives for companies operating hazardous production facilities. Corrosion protection of field pipelines is still the most complex and multifaceted task. That is due to significant length of communication lines, branching pipeline networks, complex and heterogeneous composition of pumped liquids.Problem Statement. The purpose of this research is the development of method of salinity control and the prevention of premature corrosion wear of oil pipelines by the use of inhibitors.Theoretical Part. When transporting oil and petroleum products through pipelines, there is a high probability of synergistic risks arising from corrosion of the pipeline body material, including salt deposits. Salt formation affects the throughput, performance of pipeline systems, and equipment performance. According to the result of in-line diagnostics analysis, more than 70% of pipes are subject to corrosion, with metal loss and changes in wall thickness. Corrosion also led to metal properties transformation, and degradation of its functional characteristics. Inhibitors are widely used during oil production and transportation to protect from the formation of salt deposits. With long-term operation of oil and gas pipelines it is not possible to ensure completely safe operation. Pipeline systems are constantly affected by the environment, external and internal pressure, corrosion and aging of the pipeline material.Conclusion. The article presents a brief overview of the current state of oil pipelines, and a new method for protection from salt deposits. The composition of the salt deposition inhibitor, including citric acid, has been developed. It has been experimentally established that its use reduces the number of accidents. A brief analysis of the occurrence of accidents in the oil and gas industry is performed. The problems of safe operation of pipeline systems under the influence of non-stationary factors are determined. The necessity of creating a method for mathematical modeling of pipeline systems is confirmed.
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