SYSTEM FOR MEASURING COMPONENT-WISE FLOW OF THREE-COMPONENT GAS-LIQUID FLOW OF OIL WELLS Russian patent published in 2007 - IPC G01F1/74 G01F1/66 G01N22/00 E21B47/10 

FIELD: oil and gas industry.

SUBSTANCE: in accordance to the invention, system contains three open radio-wave cylindrical high frequency resonators for measuring relative content of flow components, coaxially positioned on external surface of dielectric pipe, installed inside tubular metallic body. Each resistor is represented by short-circuited conductor in form of rectangular meander and provided with two mutually orthogonal inputs-outputs. Composition of the system also includes controllable high frequency generator and commutator, two input amplifiers, controller of gas-liquid stream flow modes, delay block and six screened receiving-transmitting routes, connected to corresponding inputs-outputs of resonators and to inputs of computing-controlling block. On end sections of the pipe, short-circuited limiting coils are mounted, and between resonators - short-circuited limiting-separating coils. On basis of component content and stream speed, determined by auto-correlation measurement method, component-wise volumetric flow is computed, and with usage of information from pressure and temperature sensors - mass flow is determined.

EFFECT: increased precision in two extreme flow modes of gas-liquid substance - non-stabilized and fully stabilized flow.

5 dwg