Three-phase flow measuring device

Abstract

The invention provides a three-phase flow measuring device which comprises a main pipeline used for conveying the mixture of oil, gas and water, a Venturi device which is arranged on the main pipeline and used for measuring the flow of the liquid in the main pipeline, a conductivity measuring sensor which is arranged in the main pipeline and used for measuring the gas phase fraction of small bubbles, the phase fractions of the oil, gas and water phase and flowing speeds of gas and liquid, a capacitance measuring sensor which is arranged in the main pipeline and used for measuring the gas phase fractions of big and small bubbles, the phase fractions of the oil, gas and water phase and the flowing speeds of gas and liquid, as well as a gamma densimeter which is arranged in the main pipelineand used for measuring the density of the mixture. The three-phase flow measuring device can correctly measure the moisture content of the condensate oil of the high-pressure condensate gas well and realize the on-line monitoring of the oil-gas well, thus being more applicable to practices.

Description

technical field [0001] The invention relates to a flow measurement device in the field of oil exploitation, in particular to a three-phase flow measurement device without separation of oil, gas and water. Background technique [0002] At present, during the development of high-pressure condensate gas fields, there has always been the problem that the water content in condensate oil cannot be accurately measured. Condensate gas centralized processing stations usually use gas-liquid separators, flow meters and analytical tests to measure oil, gas and water. Tarim high-pressure condensate gas well has a large gas-oil ratio (2000m 3 / t above), large oil-water density difference (nearly 0.4t / m 3 ) and other characteristics, it is difficult to obtain representative oil-water mixed samples in the existing technological process, and it is impossible to grasp the water content and change trend of a single well, and it is impossible to correctly analyze the dynamic analysis of reser...

AI Technical Summary

Problems solved by technology

Tarim high-pressure condensate gas well has a large gas-oil ratio (2000m 3 / t above), large oil-water density difference (nearly 0.4t / m 3 ) and other characteristics, it is difficult to obtain representative oil-water mixed samples in the existing technological process, and it is impossible to grasp the water content and change trend of a single well, and it is impossible to correctly analyze the dynamic analysis of reservoir development and timely adjust the development plan, which seriously affects the reservoir development effect and Timely supporting of oil and gas treatment system

At the same time, due to the inaccurate determination of moisture content, anti-corrosion measures cannot be effectively taken

[0003] It can be seen that the above-mentioned existing oil-gas-water flow measurement system obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

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