Oil-gas-water multi-phase flow online metering calibration device

Abstract

The invention discloses an oil-gas-water multi-phase flow online metering calibration device 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 mixer, a standard meter, a to-be-detected meter, a pressure sensor, a first temperature sensor, a first adjusting valve, a first ball valve, a separator, a first quantitative plunger pump and a second quantitative plunger pump. The device achieves the modular management and full-automatic operation, and is used forsimulating the flow type, the flow state, and the flow rate of the oil-gas-water three-phase flow of an oil-gas wellhead and the proportion of the flow type, the flow state, and the flow rate; the calibration function of the single-phase oil flow, the single-phase water flow, the single-phase gas flow, the gas-liquid two-phase flow, the oil-water two-phase flow, the oil-gas-water three-phase flow, the oil-water two-phase flow split-phase holdup rate, and the oil-gas-water three-phase flow split-phase holdup rate can be achieved, the working condition of a real oil well is simulated, and an experimental support is provided for research and development of a multi-phase flow metering instrument.

Description

technical field [0001] The invention belongs to the field of multiphase flow measurement, and in particular relates to an online measurement and calibration device for oil, gas and water multiphase flow. Background technique [0002] The flow rate of oil well output fluid is the most important parameter in oil and gas production. Accurately grasping the content of each component in the output fluid is essential for mastering reservoir dynamics and oil well production, oilfield development plan control, oil well working condition diagnosis, and oilfield development life. Forecasting is important. [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 ...

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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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