DETERMINATION OF THE CHARACTERISTICS OF A WELL JET PUMP IN THE CONDITIONS OF SWIRLING MIXED FLOWS
DOI:
https://doi.org/10.31471/1993-9868-2025-1(43)-32-40Keywords:
ejection system; well jet pump; injection coefficient; swirling of mixed flows; nomographic equation; logarithmic alignment.Abstract
. Nomograms have been developed to determine the additional pressure created by the swirling of mixed flows in the well ejection system, as generated by the inclined guide elements installed in the jet pump's flow section. The proposed nomograms enable the operational adjustment of design and operating parameters to be carried out in industrial conditions when using oil and gas injection systems in conditions of periodic changes in operating factors. When creating the nomograms from the initial equations, the canonical form of the mathematical relations was used, which are expressed as a linear sum of functional dependencies, and the range of changes in the design and operating parameters was determined. The limit values of the components of the initial equations are based on the practical experience of using well jet pumps. Considering the structure of the original equation for nomography, it is proposed that an auxiliary functional dependence in the form of a product of its individual components be used. To determine the additional pressure created by swirling the injected flow, the injection coefficient of the ejection system, the main geometric parameter, and the angle of inclination of the elements installed in the receiving chamber of the jet pump are considered. The initial data used to calculate the additional pressure created by swirling the working flow are the main geometric parameter of the jet pump and the angle of inclination of the guide elements in the working nozzle cavity. For the case of swirling the injected flow of a well jet pump, a nomogram consisting of one auxiliary and four functional vertical uneven scales has been developed. The additional pressure created by swirling the working flow can be determined using the nomogram obtained by logarithmic alignment in the form of three vertical, parallel, uneven scales. The developed graphical dependencies can also be used for combined simultaneous twistingof the injected and working flow.
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