Experimental study on eliminating severe slugging by choking in pipeline-riser systems
In order to eliminate severe slugging in pipelineriser systems, two methods of top choking and bottom choking have been used in this experimental investigation. Flow patterns and pressure profiles before and after choking have been comparatively analyzed by statistic method. The results indicate that the region of severe slugging is remarkably reduced after choking. When gas and liquid superficial velocities are constant, by using these two methods properly, severe slugging is virtually eliminated and a stable bubble flow is formed. However, if the extent of top choking is not strong enough, this method not only cannot eliminate severe slugging, but leads to a longer period and larger range of pressure fluctuation. If the extent of bottom choking is not strong enough, severe slugging cannot be completely eliminated, but the period becomes shorter and the range becomes smaller. These two methods can both cause obvious increase of pressure in the upstream pipelines, but the backpressure caused by bottom choking is much smaller than that caused by top choking.
severe slugging elimination choking pressure fluctuation backpressure
X.M.Luo L.M.He Y.L.Lu
Department of Oil & Gas Transportation & Storage Engineering, China University of Petroleum, China
国际会议
西安
英文
139-145
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）