DISPERSER OF SUBMERSIBLE PUMPING UNIT (DESIGN VERSIONS) AND MODULE-SECTION OF SUBMERSIBLE PUMPING UNIT (DESIGN VERSIONS) Russian patent published in 2002 - IPC

FIELD: oil producing industry. SUBSTANCE: invention relates to devices designed for pumping out formation medium from wells, namely, to submersible centrifugal pumping units. Disperser of submersible pumping unit has housing and at least one axial pumping stage. The latter consists of impeller with blades and straightening device with vanes. Height of blades of axial pumping stage impeller does not exceed 0.16 of impeller diameter. According to second design version, height of vanes of straightening device does not exceed 0.15 of diameter of device. Module-section, includes, in addition to one of disperser versions, centrifugal pumping stages installed in the same housing. EFFECT: provision of stable operation of submersible pumping unit in well with large content of dissolved gas. 5 cl, 6 dwg