METHOD FOR SHORT-TERM OPERATION OF WELL USING IMMERSED PUMP DEVICE WITH ELECTRIC DRIVE Russian patent published in 2007 - IPC E21B43/00 

FIELD: technology for extraction of liquid from wells by mechanized method, possible use for operating product oil wells by immersed centrifugal pump plants with adjustable electric drive.

SUBSTANCE: in accordance to method, extraction of liquid from well is alternated with accumulation of liquid in well while device is disabled and average time-integration productiveness of device is adjusted for alignment with well debit. Ratios of duration of extraction of liquid from well and durations of accumulation of liquid in well are changed. In accordance to invention well is operation using device with productiveness over 80 m³/day. Pressure, developed by plant during extraction of liquid from well, is adjusted by changing pump rotation speed so that efficiency of pump in whole adjustment spectrum is not less than 0,9 of maximal efficiency value for current rotation speed. Duration of period of well operation, equal to total of duration of extraction of liquid from well and duration of accumulation of liquid in well, is selected so that debit decrease coefficient in comparison to continuous well operation is over 0,95, while device operation duration, equal to ratio of liquid extraction duration to well operation duration, is set to less than 50%.

EFFECT: increased profitability of product wells operation.

2 cl, 1 ex, 3 dwg