Online sampling type water content meter structure based on pressure difference

Abstract

The invention provides an online sampling type water content meter structure based on pressure difference. A main pipeline is connected to a field pipeline reserved section; a baffle is arranged in the middle of the main pipeline, a measuring pipe sampling opening extends from one side of the main pipeline and is connected to a measuring pipeline through a filter and a pipeline, the measuring pipeline and the main pipeline are arranged in parallel, an inlet piston valve and an outlet piston valve are arranged at the two ends of the measuring pipeline respectively, and the outlet piston valve is connected to the main pipeline through a pipeline. The water content meter structure further comprises a main control circuit, a motor, a differential pressure transmitter and an electric actuatingmechanism; the main control circuit is in communication connection with the motor, the differential pressure transmitter and the electric actuating mechanism respectively, the motor controls the baffle to be opened and closed, the differential pressure transmitter is arranged at the inlet end and the outlet end of the measuring pipeline, and the electric actuating mechanism controls the inlet piston valve and the outlet piston valve to be opened and closed at the same time. The online sampling type water content meter structure has the advantages of being simple in structure, convenient to maintain, long in sealing service life, high in measurement precision and capable of being used in a heavy oil environment with high gas content.

Description

technical field [0001] The invention relates to the technical field of measuring the water content of crude oil, in particular to a structure of an online water content meter based on pressure difference. Background technique [0002] In the process of oil field production, the measurement of water cut is very important for counting oil well production and mastering geological changes. In the traditional production process, the water content of the oil is determined by manually sampling the oil well and bringing it back to the laboratory for testing. This method takes a long time, the operation is complicated, and the error caused by manual sampling cannot be eliminated, and working in the laboratory for a long time has certain harm to the human body. [0003] At present, there are online water content measuring instruments on the market, which can measure the water content of crude oil in pipelines in real time. However, due to the interference of factors such as fast flow...

AI Technical Summary

Problems solved by technology

This method takes a long time, the operation is complicated and the error caused by manual sampling cannot be eliminated, and working in the laboratory for a long time has certain harm to the human body

[0003] At present, there are online water content measuring instruments on the market, which can measure the water content of crude oil in pipelines in real time. However, due to the interference of factors such as fast flow rate of crude oil in pipelines, many impurities, and high gas content, large measurement errors are caused.

There are also online-non-real-time water cut measuring instruments on the market, but there are also some defects: the equipment is bulky, the measurement accuracy is low, the single model cannot be applied to pipelines of different calibers, the measurement cycle is longer for oil wells with high wax content, and the equipment caliber is small lead to pipeline pressure

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