China's natural gas production is huge,and it is found that most gas fields will have residual fluid at the bottom of gas wells in the middle and late stages of development,which will seriously affect the productivity of gas wells.In order to cope with this situation,the use of foam drainage has become one of the effective means to deal with the problem of liquid accumulation in liquid-producing gas wells,and it is easy to form a foam/gas two-phase flow system in the process of foam drainage and gas recovery,and the liquid accumulation at the bottom of the gas well is carried out through foam to solve the problem of liquid accumulation in gas wells.Therefore,it is very necessary to study the foam flow,and with the development of pipelines,there are a large number of pipes of different shapes in actual production,this paper reviews the research on the pressure drop and flow pattern of foam fluid flow in the case of vertical pipes,horizontal pipelines and inclined pipelines,and makes a prospect for the future research direction of foam fluids.
关键词
泡沫排水采气/多相流动/垂直管道/水平管道/倾斜管道/压降/流型
Key words
foam drainage gas recovery/multiphase flow/vertical pipes/horizontal pipes/inclined pipes/pressure drop/flow patterns
维普
万方数据