| 摘要 |
FIELD: lifting of liquids from deep wells. ^ SUBSTANCE: proposed unit contains submersible pump, pressure tubing string, drive shaft consisting of sucker rods whose ends are provided with slots and which are installed inside connectors. The latter are made in form of bushing with inner cylindrical ring groove in middle part and through longitudinal slots on end sections in number corresponding to number of slots on sucker rods, and blind slots located between through slots. Blind slots are made open from side pointed to cylindrical ring groove and are through in radial direction. ^ EFFECT: improved operation reliability, reduced service expenses, simplified design. ^ 5 dwg |
