METHOD FOR MEASURING WELL PRODUCTION WITH LOW GAS CONTENT Russian patent published in 2022 - IPC E21B47/00 G01F1/20 G01N30/00 G01N33/26 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used to measure the mass flow rates of oil and water, as well as the volumetric flow rate of gas by a well production measurement unit (WPMU) under conditions of gas extraction from the annulus of the well to increase drawdown on the reservoir and its production rate. A method for measuring well production with a low gas content is proposed, which includes the flow of oil well production into a measuring tank with a calibrated part, its separation into gas and liquid phases, sequential gas and liquid withdrawal from the tank, liquid flow rate measurement by the filling rate of the calibrated part of the tank, and flow rate gas - by the rate of its emptying, measuring the hydrostatic pressure drop in the tank when its calibrated part is completely filled to determine the amount of water in the produced product and emptying the tank by the pump through the drain line after the product is completely degassed. At the same time, in the cycle of measuring the gas flow rate in the well production, on the line parallel to the liquid drain line, the pumping pump is switched on with a flow rate not exceeding the well flow rate for liquid, and in the calculations of the gas flow rate, the change in pressure in the tank from the beginning to the end of the drain cycle from it is additionally taken into account liquids.

EFFECT: simplification and improvement of the accuracy of measuring oil, gas and water flow rates in the conditions of gas extraction from the annulus of the well.

1 cl, 1 dwg