Gas well ultrasonic levitation, liquid discharge and gas production system and implementation method

Abstract

The invention provides an acoustic levitation system and a gas well ultrasonic levitation, liquid discharge and gas production method. A new acoustic levitation method is introduced in the field of water discharge and gas production. The acoustic levitation system comprises a well bottom acoustic transmitter, a well mouth acoustic generator, a centralizing and clamping device and a ground controller; two columns of sound waves transmitted by the well bottom and the well mouth have the same amplitude and frequency, are stable, have opposite transmission directions, and generate standing wave phenomenon at a certain position in a shaft. Shaft liquid drops are levitated by standing wave and flow towards the well mouth under the driving of gas flow, so that gas well continuous liquid carryingproduction is realized, continuous ascending of the liquid drops in the shaft can be guaranteed, the whole life cycle of the gas shaft is maintained to be in an effusion-free production state, the well bottom flow pressure is completely reduced and the gas well is produced to be exhausted. The acoustic levitation system is suitable for various sizes of pipe column combined gas wells, does not needto change the pipe column during operation, can adjust the sound wave frequency according to the liquid production condition of the gas well, can meet the gas wells with various liquid production conditions, and 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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