TOPICAL MODIFICATION OF THE DESIGHNED MULTIPLE ROW PUMP OF ELECTRICAL BLADE PUMPING UNITS FOR OIL PRODUCTION
For electric blade pumping unit, there is a topical trend towards increased efficiency and a wider operating range. It is realized due to the modernization of radial and thrust friction pairs of serial pump stages without a significant reduction in axial force, which is practically impossible to implement due to their imperfection. The solution under study is a multiple row pump of triple circuit with axial stages. Due to the multidirectionality of two of its three rows, filled with working bodies, a low total axial force was obtained (the optimum of stage is 8.8 kg). Due to this, a full efficiency of 75.7% was obtained in comparison with the serial analogs of Baker Hughes - Centrilift, General Electric, Shlumberger - REDA, which have 61-68.4 %. The data for calculating the performance of the multiple row pump were obtained from bench tests of the third row stage and a computational experiment on the second row stage in ANSYS CFD. It is assumed that the upcoming bench tests of the multiple row pump will confirm the high efficiency value and the obtained pump operating range.