Gas well downhole multistage ultrasonic atomization water drainage and gas production device

Abstract

The invention discloses a gas well downhole multistage ultrasonic atomization water drainage and gas production device, and belongs to the field of oilfields. The device is arranged in a shaft and comprises a downhole self-power-generation ultrasonic atomization device and a floating type self-power-generation ultrasonic atomization device; the downhole self-power-generation ultrasonic atomization device is arranged in the position where condensed liquid starts to appear in the shaft, and the downhole self-power-generation ultrasonic atomization device is used for timely collecting the condensed liquid starting to drop and atomizing the condensed liquid in liquid phase into small liquid drops; the floating type self-power-generation ultrasonic atomization device is arranged below the liquid level at the bottom of the shaft and used for atomizing the condensed liquid dropped in the shaft in the liquid phase. According to the device, the downhole self-power-generation ultrasonic atomization device and the floating type self-power-generation ultrasonic atomization device can generate power by themselves under the effect of airflow in the shaft, external power sources are not needed, the condensed liquid in the liquid phase can be dispersed into droplets and drained out of the shaft, wherein the droplets can be carried by the airflow at a certain flow rate and are small in diameter, and therefore energy can be greatly saved.

Description

technical field [0001] The invention relates to the technical field of drainage and gas recovery in oil fields, in particular to an underground multi-stage ultrasonic atomization drainage gas recovery device for gas wells. Background technique [0002] Most natural gas wells will have liquid accumulation in the middle and late stages of production. The root cause of liquid accumulation in gas wells is that when the production of gas wells is low, the gas flow rate in the wellbore is too low to carry the liquid phase to the surface, resulting in liquid phase Fall back to form effusion. Research and analysis show that the fluid production of gas wells in the Sulige Gas Field is dominated by condensate, that is, the natural gas containing water vapor in the formation flows into the wellbore. Due to heat loss during the ascent process, when the temperature and pressure drop below the dew point, the water vapor flows into the wellbore. In the medium, it will condense into a liqu...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of high energy consumption in the prior art drainage gas recovery method, the embodiment of the present invention provides a gas well downhole multi-stage ultrasonic atomization drainage gas recovery device, which can Make gas well fluid discharge out of the wellbore effectively

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