METHOD FOR CONTINUOUS MEASUREMENT OF THE NUMBER OF PHASES OF A GAS-LIQUID MIXTURE Russian patent published in 2023 - IPC E21B47/10 

FIELD: oil and gas industry, specifically measurement of the output flow rate of an oil well for gas and liquid.
SUBSTANCE: invention can be used both directly in the design of gas-liquid flow metering units in measuring installations, and in any other technological installations that have the functionality of a separate parallel simultaneous measurement of parameters of phases of the incoming product flow. The method includes installing a tank for receipt of the gas-liquid mixture (GLM) to be measured, a tank where the GLM enters after measurement of the amount of its phase components, installation of two Coriolis flowmeters on the gas and liquid outlet lines, designed to measure the amount of each discharged phase, installation on the outlet lines phases of two analog pipe valve devices, having an opening degree from 1 to 100%. Installation of two sensors on the tank body - a sensor of hydrostatic pressure of the liquid layer on the bottom of the first tank and a differential pressure sensor, installation of a programmable controller. At the same time, differential pressure sensor is used to measure the difference in the pressure values of the gas phase on the walls of these containers. With the help of transmission devices, a control loop is formed, including analog devices for pipe valves, these two pressure sensors and a controller. With the help of the control loop, the values of the indicated pressure sensors are maintained at a level that sets the optimal rate of phase removal through the controller, which does not drop to zero in non-emergency mode, by controlling the degree of opening of analog pipe valves devices with the help of the controller.

EFFECT: technical result consists in accelerating the measurement of the GLM phases, due to the possibility of picking up and counting both phases in a continuous mode.

1 cl, 1 dwg