METHOD FOR DUAL OPERATION OF OIL WELL EQUIPPED WITH ELECTRIC-CENTRIFUGAL PUMP Russian patent published in 2014 - IPC E21B43/14 E21B47/14 E21B43/38 

FIELD: oil and gas industry.

SUBSTANCE: method includes measurement of yields for the upper and lower formations and formation pressure, as well as degree of water cut in the lower formation. At that each tube of the flow string is equipped preliminary with an acoustic converters and controllers installed at its length mid with its own control code for the purpose of communications with the system telemetric module, and during the period of short-term stop of the centrifugal pump, besides measurement of yields for the upper and lower formations and formation pressure against level and pressure build-up curves, according to results of continuous polling of acoustic converters and controllers boundaries of gas-oil and oil-water levels are determined upon stratification of the three-phase mixture in the tubing string, as well as production volume for each of the three components in the mixture and its water cut.

EFFECT: improved accuracy for determination of yields and water cut for each developed formation of a multipay well.

1 dwg, 1 tbl