MULTIPHASE FLUID SAMPLING DEVICE AND METHOD OF IMPLEMENTATION THEREOF Russian patent published in 2024 - IPC G01N1/18 F17D3/10 

FIELD: test.

SUBSTANCE: invention relates to devices and methods for testing or calibrating instruments for measuring multiphase flows and can be used in the oil and gas industry, as well as in metallurgy, machine building, power, chemical and other industries, where there is a need to measure flow rate and component composition of multiphase fluid under different thermobaric conditions. Multiphase fluid sampling device comprises a connection port for connection to a pipeline line, with a sampling probe for sampling from the line, first separator equipped with a level gauge, a pressure gauge and at least two temperature sensors, connected to the sampling containers, for separation of the fluid into three phases: water, unstable condensate and separation gas, a second separator equipped with a level gauge, a pressure gauge, a heater and at least one temperature sensor, connected to the sampling containers, for separation of separation gas into degassing gas and degassed condensate, gas flow meter installed on output line of the second separator, connection line of the first and second separators with pressure sensors and pressure relief device. Method for implementing sampling of a multiphase fluid includes sampling a multiphase fluid from a pipeline through a sampling probe of a connection port into a first and a second separator, wherein the pressure difference between the pipeline line and the outlet from the first separator should not be more than 0.1 MPa, the initial pressure in the second separator before the sample is set at level of 4 MPa, and temperature is at level of 15 °C, subsequent sampling of components in the corresponding sampling containers in the following sequence: unstable condensate, separation gas - from the first separator, degassing gas, degassed condensate - from the second separator, water from the first separator, wherein after the degassed condensate extraction the gas flow rate is controlled through the gas flow meter.

EFFECT: accurate determination of component composition of multiphase fluid from pipeline in close proximity to installed multiphase flow meter (MPFM), which makes it possible to carry out its accurate calibration and periodic verification without dismantling from the line and, accordingly, to perform continuous monitoring using the MPFM of the component composition of the fluid in the pipeline.

2 cl, 1 dwg