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This article analyzes the design of the power part of gas separators of various manufacturers, reveals the causes of backflows, which can lead to hydro-abrasive wear of the elements of the flow-through part, reduction of the separation properties as a result of the gas-liquid mixture flow dispersion, and decrease of pressure gradient in the separation chamber. A mathematical model was selected, hydrodynamic calculations of design options and upgrading were carried out, and animproved flow part of the separator was developed. Bench tests were conducted to confirm the improved parameter of the product.

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This article is devoted to the model of a borehole centrifugal pump developed at the Department of Hydraulics of Bauman Moscow State Technical University. A universal layout has been developed for testing the stages of pumps of this type in a certain range of parameters. The article describes the mathematical model used. A comparison of numerical and field experiments is given. A problem has been identified when comparing their results.