METHOD OF MEASURING MASS FLOW RATE OF CRUDE OIL AND VOLUME OF UNDISSOLVED GAS IN OIL WELL PRODUCT Russian patent published in 2024 - IPC E21B43/34 E21B47/10 

FIELD: oil, gas and coke-chemical industry.

SUBSTANCE: method for measuring mass flow rate of crude oil and volume of undissolved gas in oil well products includes a cycle of filling oil well products into a measuring tank with removal of free gas into the pressure line of the well, product discharge cycle from the tank when the liquid level in the tank reaches the uppermost position, the crude oil flow rate is measured by the rate of filling the calibrated part of the measuring tank, and the volumetric flow rate of the gas is measured by the rate of its emptying. At that, switching of the product filling into the container to the drain and back are made when the liquid level reaches the known density in the outer vertical tube of the extreme upper and lower positions, connected on one side with the gas discharge line from the container, and on the other - with the lower part of the reservoir filled with formation water. At that, formation water and liquid of known density in the vertical tube are separated by a flexible membrane. Location of the lower level sensor in the outer tube is located at the level of the end of the product drain pipe from the measuring vessel.

EFFECT: simpler measurements and higher accuracy.

1 cl, 2 dwg