METHOD FOR SEPARATE PRODUCTION RATE MEASUREMENT AT DUAL OPERATION OF BOREHOLE COMPLETE WITH ELECTRIC CENTRIFUGAL PUMP Russian patent published in 2015 - IPC E21B47/10 E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil industry. The method includes extracting the product from the lower bed through an intake spout passing through a packer separating beds, measuring the total production rate and product water cut at a daylight surface, measuring the intake pressure and parameters of the pump performance by means of a telemetric system module installed under a submersible electric pump motor, measuring the downhole pressure of the lower bed by means of a depth gauge connected by a cable with the telemetric system module, closing the product receipt from one of the beds by the hydraulic packer with the transfer of pressure through a tube of a low diameter in order to make measurements of the other bed performance, determining oil and water production rates for the closed bed by subtracting the production rate of the operated bed from the total oil and water production rates. In order to make measurements the bed with the lesser oil production rate is closed by load levelling to the lower part of the flow string that opens an access to a high-pressure fluid from the string through a low-diameter tube to the hydraulic packer due to own weight. Upon the bed closure revolutions of the submersible motor are reduced by a drive frequency-to-current converter in order to maintain the pressure at the suction side equal to the pressure before the closure of the bed. Measurements of oil and water production rates are made at the daylight surface.

EFFECT: improved efficiency of the separate production rate measurement at dual operation of the borehole.

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