The article analyzes hydraulic calculations of the oil gathering pipeline network of the K field. The role and influence of the high gas factor and complex terrain of Eastern Siberia, in particular, altitude differences, on the values of the gas-liquid mixture flow rate are designated. The flow regimes in the pipeline system are assessed. A unique method is proposed that takes into account the gas and liquid flow rates separately, and also enables to use the erosion value of particles suspended in the liquid as a factor that expands the range of regulated gas-liquid mixture rates in order to optimize capital costs. An analysis is carried out that revealed that the existing state standards do not provide limits for the rate of erosive wear, and do not offer flow rate corrections for the wear rate. In this regard, the new method is unique and allows for a significant reduction in the capital intensity of projects under identical conditions. The result of the work is a forecast of erosive wear and an analysis of the possibility of changing the maximum flow rate of liquid in field pipelines, taking into account the assessment of the economic efficiency of this technical solution. This approach was verified by testing on two fields with recorded cases of erosion-corrosion processes and in their absence.
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