Abstract：

　　There are many low-pressure gas wells in the Sulige gas field. These wells have low production efficient and serious liquid loading problems. Various techniques have been utilized to solve this problem in the area, but their process optimization and applicability still need to be investigated. In this paper, we reviewed the principles, process optimization, applicability and experimental apparatus for four liquid unloading processes: foam, velocity string, atomization and swirl flow.

Key words：liquid unloading foam velocity string atomize swirl flow

Received：

Corresponding Authors：

Cite this article：WANG Rui,ZHANG Ningsheng,LIU Xiaojuan, et al. Review of liquid unloading technology: Foam, velocity string, atomizing and vortex flow, for gas wells in the Sulige gas field[J]. 石油科学通报, 2016, 1(2): 241-256.

URL：