METHOD FOR MEASURING OIL WELL PRODUCTION Russian patent published in 2022 - IPC E21B43/34 E21B47/10 G01N33/26 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used to determine the mass flow rate of oil, as well as the gas factor of oil with the measurement of the residual amount of dissolved gas in oil under operating measurement conditions. A method for measuring oil well production by a mobile unit includes the flow of oil well production into a measuring tank with a calibrated part, separating it into gas and liquid phases and measuring the mass flow rate of the liquid by the time of filling the calibrated part of the tank and by the maximum specified hydrostatic pressure drop in it with a closed drain line liquids. Prior to filling, the produced product is preliminarily circulated through the measuring vessel to achieve the pressure in the well pressure line and the minimum specified hydrostatic pressure drop. Next, the drain of the liquid from the tank is blocked and the measuring tank is filled with products while maintaining a constant pressure in it by removing from the tank an additional volume of gas entering it and measuring this volume with a meter installed after the bypass valve set to the pressure in the pressure line of the well. When the maximum predetermined value of the hydrostatic pressure difference in the tank is reached, the product inlet line to the tank is closed, the valve on the bypass line of the bypass valve is opened and the gas is continued to be removed from the tank and its volume is measured until the atmospheric pressure value is reached in the tank. The GOR of oil is calculated as the ratio of the amount of gas measured by the meter, minus the volume of liquid that entered the tank during its filling, to the mass of oil that entered the tank during the filling cycle.

EFFECT: measurement of the total amount of associated gas produced together with oil is provided.

1 cl, 1 dwg