Abstract
Background Up to 70 thousand pipeline accidents occur in the fields annually in Russia, 90 % of which are the result of corrosion damage. Of the total number of accidents, 50-55 % are oil recovery systems. 42 % of pipes do not withstand five years of operation, and 17 % - even 2 years. Pipelines of the same grade and diameter with identical microstructure and chemical composition under similar operating conditions differ significantly in terms of trouble-free operation: some work without damage the entire design period, others are destroyed as a result of through corrosion damage much earlier. Field pipelines are quite metal-intensive and technically complex structures, so their corrosion protection is a very urgent problem. Aims and Objectives Let’s consider the problem of pumping oil at a low speed, which results in the release of a corrosive aqueous phase. Results Based on the calculations, it can be concluded that due to an unreasonable speed limit when calculating the hydraulics of oil pipelines, the operating organization mistakenly chooses a larger pipe diameter for capital construction or repair of pipeline sections. This leads to an increase in metal consumption, as a result there is an increase in the cost of the object and construction and installation works. It is recommended to carry out a hydraulic calculation to determine the diameters of pipelines during the overhaul, not in a single variation in existing parameters, but with a statistical analysis of the experience of pipeline failure-free operation under similar characteristics and transportation conditions in this region.
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