提出了气井排液的一条新思路，即利用超声波雾化原理结合采气工艺中的临界流速理论，推导出一个新的声波振动频率与临界流速的关系式，从而建立起实用的确定超声波换能器声振动频率范围的图版，验证了超声雾化应用于气井排液的可行性，为设计专门应用于气井排液的超声雾化器奠定了理论基础。 A new idea of ​​gas drainage is put forward. By using the principle of ultrasonic atomization combined with the critical flow velocity theory in gas production process, a new relationship between the acoustic frequency and the critical velocity is deduced, and a practical method of determining the ultrasonic energy transfer Vibration frequency range of the plate, verify the feasibility of ultrasonic atomization applied to the gas well drainage, which has laid a theoretical foundation for the design of the ultrasonic atomizer specially applied to gas well drainage.