...Ning Wu; Chengcheng Luo; Yonghui Liu; Nan Li; Chuan Xie; Guangqiang Cao; Changqing Ye; Haoyu Wang Pressure gradient prediction is crucial in gas well analysis. The experiment is the most effective method of understanding the flow characteristics in horizontal gas wells. The greatest difference...

...Chengcheng Luo; Yufeng Cao; Yonghui Liu; Sicun Zhong; Suhui Zhao; Zhongbo Liu; Yaxin Liu; Danzhu Zheng Wellbore pressure gradient in gas wells is significant in designing deliquification technologies and optimizing production. At present, no model has yet to be established specifically for gas...

..., downward two-phase in annulus is encountered on liquid-assisted gas-lift (LAGL) unloading and production operations. This study presents experimental data for pressure gradient, liquid holdup, and flow regimes for vertical downward two-phase (air and water) flow in pipe annulus. Also, the applicability...