PROCESS OF EXPLOITATION OF LOW-DISCHARGE WELL WITH ELECTRIC PUMP HAVING FREQUENCY-CONTROLLED DRIVE Russian patent published in 1996 - IPC

FIELD: oil production. SUBSTANCE: for prevention of influence of drain of fluid from pipe string on discharge of well, for expansion of capabilities of control over inflow of products after termination of pump feed in each cycle frequency of voltage supplied to electric pump is controlled keeping maximal frequency of voltage supplied to electric pump in process of inflow of fluid from pool. Pump does not resume feed to prevent discharge of fluid from string of lifting pipes through pump into well at this frequency and resumes feed with its transfer to increased frequency when pressure at pump intake reaches specified value in process of inflow. EFFECT: improved operational stability of electric pump. 3 dwg