MEASURING SYSTEM FOR COMPONENT-WISE FLOW RATE OF THREE-COMPONENT GAS-LIQUID FLOW IN OIL WELLS Russian patent published in 2008 - IPC G01F1/74 G01N22/00 G01F1/86 E21B47/10 

FIELD: oil and gas industry.

SUBSTANCE: invention may be used for oil well production monitoring. System includes two high-frequency (HF) resonators being in axial alignment at dielectric pipe. Each resonator is represented with short-circuited zigzag conductor with two mutually orthogonal input-outputs and limiting and limiting-separating coils. Coriolis flow meter with electronic flow and density transducers, pressure gauge and temperature sensor, calculating and control unit, HF controlled generator and switchboard, flow controller, Coriolis flow meter calibration controller 1 and 2, two input amplifiers, four transmission paths and eight coupling capacitors are also included into resonator. Based on radio HF sounding in two mutually orthogonal directions, relative volumetric content of components is measured. Flow speed is determined by method of auto correlated measurement of speed. Mass flow rate and density of the monitored medium is measured using Coriolis flow meter and calibration controller. Calibration controllers allow for selecting Coriolis flow meter calibration which corresponds to definite mode, taking into account information from flow controller.

EFFECT: invention improves measurement accuracy even for significant non-stationary flows.

5 dwg