Device for measuring frictional resistance coefficient of gas in underground gas storage well and monitoring vibration of tubular column

Abstract

The invention relates to the field of development of horizontal wells of underground gas storage wells, and particularly relates to a device for measuring the frictional resistance coefficient of gas in the underground gas storage well and monitoring the vibration of a tubular column. A system comprises four parts of a gas control unit, a pipeline testing unit, a vibration device unit and an acquisition control unit, wherein the gas control unit comprises a screw compressor, a buffer tank and a gas mass flow controller, the buffer tank is connected between the screw compressor and the gas mass flow controller; the pipeline testing unit comprises a simulating pipeline and a sensor; and the vibration device unit comprises a vibration sensor group and an upper computer, and a vibration sensor comprises an acceleration sensor. The acquisition control unit is realized by connecting a computer with a test device in series. The frictional resistance coefficient of the gas in the tubular column of the underground gas storage well is measured, the vibration performances of the tubular column under the working conditions of injection and extraction are monitored, and the structure integrity of the tubular column of the underground gas storage well and the safety of the whole well are guaranteed.

Description

technical field [0001] The invention relates to the field of underground gas storage horizontal well development, in particular to an underground gas storage well gas friction resistance coefficient measurement and pipe string vibration monitoring device. Background technique [0002] With the continuous and in-depth development of the oil and gas industry, the scale and number of underground gas storage wells and high-pressure gas wells continue to increase. According to research and engineering experience, in the absence of accurate friction coefficients, the current scientific research results and technical means cannot calculate the force of the pipe string well, which makes the selection of pipe string materials for gas storage wells lack of basis, which affects the cementing efficiency and Gas well safety. The traditional frictional resistance coefficient measurement experiments and theories are mainly aimed at the liquid wall, and the measurement and calculation of t...

AI Technical Summary

Problems solved by technology

[0003] When injecting and producing natural gas in an underground gas storage well, the interaction between the fluid and the pipe wall caused by the high-speed flow of natural gas in the pipe string is a problem that has been neglected in the design of the pipe string of the underground gas storage well. String vibration can easily lead to structural failure of underground gas storage wells, or even scrap the entire well

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