METHOD OF BRINGING OF WELL EQUIPPED WITH ELECTRIC CENTRIFUGAL PUMPING UNIT AND VARIABLE FREQUENCY DRIVE TO STEADY-STATE OPERATING CONDITIONS Russian patent published in 2002 - IPC

FIELD: oil recovery; applicable in bringing of wells equipped with electric centrifugal pumping unit to steady-state operating conditions after performance of well remedial work. SUBSTANCE: method includes starting of electric centrifugal pumping unit, supply of fluid by centrifugal pump to tubing string and repetition of cycles with frequency of supply voltage changed in each cycle. In this case, operation of centrifugal pump during entire time of well completion is continuous. In each cycle, dynamic level of fluid in well is measured and compared with required value obtained as a result of investigation of previous completion of the given well and calculation of frequency of supply voltage for next cycle. Calculation is repeated until full coincidence of hydraulic characteristics of centrifugal pump and formation. EFFECT: higher efficiency of well operation. 1 dwg, 1 tbl