FIELD: oil, producing industry. SUBSTANCE: invention relates to pump building and it can used in submersible electric pumps for lifting of formation liquids (oil) from wells. Proposed submersible centrifugal high-pressure electric pump contains tubing mounted check valve and sludge branch pipe stopped from to and provided with through radial holes lower than stopper, pump sections with intake module or gas separator, and submersible electric motor with hydraulic protection connected in tandem. Check valve is provided with locking device lifted from well after pressure testing of tubing. Invention is aimed at increasing operation reliability and longevity by preventing possibility of stalling, facilitating bringing the well into operating conditions, provision of possibility of acid-treatment of electric centrifugal pump to clean it from saline deposits and wash. EFFECT: improved reliability in operation. 2 dwg
