Review of liquid unloading technology: Foam, velocity string, atomizing and vortex flow, for gas wells in the Sulige gas field
WANG Rui, ZHANG Ningsheng, LIU Xiaojuan, CHEN Jie, DOU Liangbin
1 Xi’an University of Petroleum, Xi’an 710065, China 2 Changqing Downhole Technology Company, Chuanqing Drilling Engineering Co., Ltd., Xi’an 710018, China 3 School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an 710049, China
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.
王瑞，张宁生，刘晓娟，陈洁，窦亮彬. 苏里格气田泡沫和井下工具类排水采气工艺研究现状[J]. 石油科学通报, 2016, 1(2): 241-256. WANG Rui, ZHANG Ningsheng, LIU Xiaojuan, CHEN Jie, DOU Liangbin. Review of liquid unloading technology: Foam, velocity string, atomizing and vortex flow, for gas wells in the Sulige gas field. 石油科学通报, 2016, 1(2): 241-256.
