A gas well ultrasonic suspension drainage gas production system and realization method

Abstract

The invention provides an acoustic levitation system and a gas well ultrasonic suspension liquid drainage gas recovery method, and introduces a new acoustic levitation method in the field of drainage gas recovery. The device and ground controller can realize that the amplitude and frequency of the two columns of sound waves emitted at the bottom of the well and the wellhead are the same and stable, but the transmission direction is opposite to generate a standing wave phenomenon at a certain position in the wellbore. The wellbore droplets are suspended by the standing wave and flow to the wellhead driven by the airflow, realizing continuous liquid-carrying production of the gas well, which can ensure the continuous rise of the liquid droplets in the wellbore, keep the gas well in a production state without liquid accumulation throughout the life cycle, and fully reduce the bottom hole flow It is suitable for gas wells with combinations of pipe strings of various sizes. There is no need to replace the pipe strings during operation. The frequency of the sound wave can be adjusted according to the liquid production conditions of the gas wells to meet the gas wells with various liquid production conditions, and it is clean and environmentally friendly.

Description

technical field [0001] The patent of the invention belongs to the field of gas well drainage and gas recovery, in particular to a gas well ultrasonic suspension liquid drainage gas recovery method, which belongs to the field of petroleum and natural gas exploitation. Background technique [0002] When the production of the gas well enters the middle and late stages, as the production of the gas well decreases, the gas flow cannot continuously carry the liquid droplets in the wellbore, and the liquid droplets fall back, resulting in fluid accumulation at the bottom of the well, increasing the formation back pressure, causing the production of the gas well to decrease or even shut down due to water flooding. For effusion, it is necessary to take liquid drainage and gas recovery measures to continuously bring out the liquid. [0003] The current liquid drainage and gas recovery methods are mainly divided into chemical injection method, gas lift method, and mechanical drainage m...

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Problems solved by technology

[0006] Invented an acoustic levitation drainage gas recovery method, which is used to solve the problems of serious environmental pollution, incomplete natural gas recovery, high gas-liquid ratio environment and easy gas lock in the existing drainage gas recovery technology; the acoustic levitation system includes: the bottom of the well Sound wave emission device, wellhead sound wave generation device, righting and locking device, ground controller; sound wave emission device includes: power module, transducer, horn, sound wave emission end, the power module provides sufficient output power and stable The frequency enables the suspended objects to be suspended stably in the spatial sound field. Due to the different suspended objects, power of different sizes needs to be provided, so the output power of the power supply is required to be continuously adjustable and the output frequency is stable; the transducer converts the electric power into Mechanical vibration; the horn amplifies the displacement or velocity amplitude of mechanical vibration, and the sound wave transmitting end radiates the vibration to the suspension area in the form of ultrasonic waves; the ground controller includes: a regulator, a manual adjustment module, and a suspension start switch. The regulator realizes the adjustment of the wavelength and frequency of the sound wave by adjusting the frequency; the manual adjustment module is connected to the regulator and is used to manually adjust the frequency of the sound wave; the suspension start switch is connected with the The regulator is connected, and the acoustic suspension system starts or stops working when triggered

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