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Intelligent metering device and method for water content of oil well produced fluid

A technology of measuring device and measuring method, which is applied in the directions of measuring device, surveying, earthwork drilling and mining, etc., can solve the problem that the water content fluctuation information cannot be detected well.

Active Publication Date: 2021-05-18
TIANJIN UNIV OF SCI & TECH +1
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  • Application Information

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Problems solved by technology

The double-loop high-frequency capacitive sensor adopted in the above patent cannot detect the fluctuation information of moisture content well

Method used

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  • Intelligent metering device and method for water content of oil well produced fluid
  • Intelligent metering device and method for water content of oil well produced fluid
  • Intelligent metering device and method for water content of oil well produced fluid

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Embodiment Construction

[0057] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0058] An intelligent metering device for the water content of oil well production fluid, such as figure 1 As shown, the metering device is connected in parallel to the descending pipeline 1 for oil delivery, and the metering device includes a small gas-liquid separator 5, an exhaust pipe 6, a liquid discharge pipe 9, a return pipe 11 and a multi-electrode high-frequency capacitive sensor 10 , the liquid inlet end of the small gas-liquid separator is connected to the descending pipeline for oil transportation, the liquid outlet end of the small gas-liquid separator is connected to the input end of the multi-electrode high-frequency capacitive sensor through the liquid discharge pipe, and the small gas-liquid separator The exhaust end is connected to the output end of the multi-electrode high-frequency capacitive sensor through the exhaust pipe and output to t...

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Abstract

The invention relates to a metering method of an intelligent metering device for the water content of oil well produced fluid. The metering method is technically characterized in that a liquid-phase multi-element water content fluctuation signal of oil-water mixed liquid obtained after gas-liquid separation is obtained through a multi-electrode high-frequency capacitive sensor, and a deep LSTM-CNN multi-channel fusion network is adopted for extracting water content features in the multi-element water content fluctuation signal collected by the sensor layer by layer and carrying out feature fusion. The water content of the oil well produced fluid is predicted by taking a water content test value as a label and taking the features obtained after network fusion as network input. The adopted deep neural network has objectivity in predicting the water content, uncertainty and subjectivity of manual operation in a test are eliminated, and after the deep convolutional neural network and the long and short-term memory network are trained through a large amount of data and the number of iterations, the data can be predicted strongly and objectively.

Description

technical field [0001] The invention belongs to the technical field of crude oil production, in particular to an intelligent metering device and method for the water content of liquid produced in an oil well. Background technique [0002] In the process of crude oil extraction, the accurate measurement of the water content parameters of the crude oil production liquid is of great significance to the optimization, control and reliable operation of the production process, and it is also an important guiding material for various modes of operation in the process of oil mining. At present, there is a large amount of associated gas in oil well production fluid, which will lead to the failure of the existing oil well water cut measurement method. Therefore, how to measure the water content of oil well production fluid under the condition of high gas volume is a technical problem at present. In addition, most of the oil wells in my country are in the middle and late stage of devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B43/34G01N27/22
CPCE21B47/00E21B43/34G01N27/223
Inventor 杜萌高一样高忠科门玉莲
Owner TIANJIN UNIV OF SCI & TECH
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