A calibration device for online metering and calibration of oil-gas-water multiphase flow

Abstract

The invention discloses an online measurement and calibration device for oil-gas-water multiphase flow, which comprises a single-phase oil calibration system, a single-phase water flow calibration system, a single-phase gas flow calibration system, a heating buffer tank, a screw pump, a static mixing device, standard meter, meter to be tested, pressure sensor, first temperature sensor, first regulating valve, first ball valve, separator, first quantitative plunger pump, second quantitative plunger pump, the device realizes modularization Management, fully automated operation, used to simulate the flow pattern, flow rate and ratio of the three-phase flow of oil, gas and water at the oil and gas wellhead; it can realize single-phase oil flow, single-phase water flow, single-phase gas flow, gas-liquid Two-phase flow rate, oil-water two-phase flow rate, oil-gas-water three-phase flow rate, oil-water two-phase flow separation phase holdup, oil-gas-water three-phase flow separation phase holdup calibration, calibration and other functions to simulate the working conditions of real oil wells , to provide experimental support for the development of multiphase flow metering instruments.

Description

technical field [0001] The invention belongs to the field of multiphase flow measurement, in particular to an on-line measurement, calibration and calibration device for multiphase flow of oil and gas. Background technique [0002] The flow rate of produced fluid from oil wells is the most important parameter in oil and gas production. Accurately mastering the content of each component in the produced fluid is essential for mastering reservoir dynamics and oil well production, controlling oilfield development plans, diagnosing oil well conditions, and oilfield development life. Predictions, etc. are important. [0003] Oil well produced fluids belong to multiphase flow, including oil-water two-phase flow and oil-gas-water three-phase flow. Some single-well produced fluids also contain solids such as sand and wax. Online measurement of multiphase fluids has always been an industrial problem. After years of research , some domestic and foreign multiphase flow measurement prod...

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Problems solved by technology

[0003] Oil well production fluid belongs to multiphase flow, including oil-water two-phase flow and oil-gas-water three-phase flow. Some single well production fluids also contain solids such as sand and wax. Online measurement of multiphase fluid has always been an industrial problem. After years of research , some domestic and foreign multiphase flow metering products have been commercially applied, but their metering accuracy and scope of application still have great defects. The measurement of oil-gas-water multiphase flow has put forward new requirements, but there is no online metering experimental device in China that can simulate the flow pattern and flow state of oil-gas-water three-phase flow at the wellhead, and realize single-phase oil flow, single-phase water flow, single-phase gas flow, etc. Calibration and calibration of flow rate, gas-liquid two-phase flow rate, oil-water two-phase flow rate, oil-gas-water three-phase flow rate, oil-water two-phase flow separation phase holdup, oil-gas-water three-phase flow separation phase holdup, etc.

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