Online measurement device and online measurement method for content of free water in oil transmission pipeline

Abstract

The invention discloses an online measurement device and a measurement method for the content of free water in an oil transmission pipeline, and belongs to the technical field of automatic oil gas measurement. The online measurement device comprises a constant-pressure constant-speed pump, an oil-water separation column, a gas storage tank, a ventilation coiled pipe, a multi-point electric conductivity determinator, a temperature / pressure sensor, corresponding automatic valves and pipelines. The invention discloses a method for measuring the content of the free water by adopting the measurement device at the same time. According to the online measurement device and the measurement method, disclosed by the invention, the structure is simple, the testing loss is small, the content of the free water in an under-pressure oil transmission pipeline can be accurately tested in time, a testing process is high in automation degree, and the workload of workers is reduced.

Description

technical field [0001] The invention belongs to the technical field of automatic metering of oil and gas, and in particular relates to an online measuring device and method for free water content in a pressurized oil pipeline. Background technique [0002] With the development of industry, my country's demand for crude oil continues to increase, and correspondingly, the development of crude oil pipeline transportation is also very rapid. Safe and efficient pipeline oil transportation can reduce the operating cost of the oil industry, save energy and reduce consumption. For crude oil pipeline transportation, water content is an important parameter. It is not only related to the energy saving and consumption reduction of petroleum products during transportation and treatment, but also an important basis for the corresponding anti-corrosion measures for pipelines. [0003] At present, the measurement methods for the measurement of water cut in the oil field are mainly divided ...

AI Technical Summary

Problems solved by technology

Using metal tanks, tank cars, etc. to measure after phase separation has high measurement accuracy, but its measurement conditions are limited, measurement loss is large, and operation stability is poor; while multi-phase flowmeters face high prices and limited application range , lack of standards and specifications for calibration and certification, and many other challenges

[0004] It can be seen that an economical and efficient online device for measuring the free water content in the oil pipeline can timely grasp the change trend of the water content in the pipeline, reduce the work intensity of personnel, and have important engineering significance for ensuring the safe and economical operation of the pipeline. There are no reports of such devices

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