METHOD AND DEVICE FOR MEASURING LIQUID FLOW IN GAS-LIQUID MIXTURES Russian patent published in 2005 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes separating gas from liquid in the mixture. Liquid is periodically accumulated in calibrated gas separator tank with concurrent by-way of gas into collector and accumulated liquid is pushed out by gas with open pipeline used for draining gas into collector. During pushing away accumulated liquid by gas differential pressure between lower and upper pipeline points is additionally measured. Liquid flow in gas-liquid mixtures is calculated as total of flow of liquid filling calibrating tank, and flow of liquid, carried away by gas from separator, determined from given relation. Method is realized by device, which contains calibrating tank with inlet branch pipe for feeding gas-liquid mixture therein, pipeline for draining gas and pipeline for draining liquid, connected to collector through three-drive valve. Also, following are mounted in separator: level relay-sensor limiting calibrating volume, absolute temperature sensor, absolute pressure sensor and differential pressure sensor between lower and upper separator points. Between lower and upper pipeline points a sensor for measuring differential pressure is mounted. At entrance of pipeline dispersant is mounted for evening gas and liquid speeds.

EFFECT: higher precision.

2 cl, 1 dwg