Condensed gas flow quantity measuring systems

Abstract

The present invention relates to a condensate gas flow measuring system which comprises a condensate gas exploiting well and a gas-gathering line. The gas-gathering line is orderly provided with an emergency turn-off valve, a heating furnace, a throttle, a three-phase nondisjunction flowmeter, a metering separator, an oil flowmeter, a gas flowmeter and a water flowmeter. The three-phase nondisjunction flowmeter comprises a main pipeline, a venturi device which is used for measuring the liquid flux in the main pipeline, an electrical conductivity measuring transducer which is arranged in the main pipeline and is used for calculating the gas phase fraction of small air bubble, the phase fractions of each phase of oil, gas and water and the flow speeds of the gas and the liquid, a capacitor measuring transducer which is arranged in the main pipeline and is used for calculating the gas phase fraction of big air bubble and the small air bubble, the phase fractions of each phase of oil, gasand water and the flow speeds of the gas and the liquid, and a gamma densimeter which is arranged in the main pipeline and is used for calculating the density of the liquid. The condensate gas flow measuring system can exactly measure the water content of high pressure condensate gas well condensate oil, realize the online monitoring of a gas well and is more practical.

Description

technical field [0001] The invention relates to a condensate gas flow measurement system in the field of oil exploitation, in particular to a three-phase flow measurement system of oil, gas and water in the condensate gas. Background technique [0002] At present, during the development of high-pressure condensate gas fields, there has always been a problem that the water content in the condensate cannot be accurately measured. Condensate gas centralized processing station usually adopts gas-liquid separator, flow meter and analytical test to measure oil, gas and water. Tarim high-pressure condensate gas well has a large gas-oil ratio (2000m 3 / t or more), large oil-water density difference (near 0.4t / m 3 ) and other characteristics, it is difficult to obtain a representative oil-water mixed sample in the existing process flow, and it is impossible to grasp the water content of a single well and its changing trend, and it is impossible to correctly analyze the reservoir de...

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 condensate gas flow measurement system obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

Images