中文摘要：

根据归一化压差及出口相含率信号特征规律对集输-立管内所发生的流型进行了判别及分类,将流型划分为典型严重段塞流（SS1）、第二类严重段塞流（SS2）、第三类严重段塞流（SS3）、震荡流型（OSC）及稳定流型（STB）,并对所观察到的典型严重段塞流（SS1）进行了手动节流、基于立管底部压力的PID控制及基于立管压差的PID控制调节。通过对比消除典型严重段塞流后立管底部压力、立管压差、入口流量波动及调节阀平均开度等参数对三种控制策略的控制效果进行评价得出结论：基于立管压差的PID控制调节效果最好,基于立管底部压力的PID自动控制次之,手动节流控制严重段塞流效果最差。

英文摘要：

According to the characteristics of normalized pressure drop along the riser and the riser outlet liquid holdup,flow patterns that occurred within a pipeline-riser system was discriminated and classified into five categories-SS1、 SS2、 SS3、 OSC and STB.Manual control、 PID control based on riser base pressure and PID control based on riser pressure drop were carried out to eliminate the observed SS1 in order to stabilized the periodic pressure and flow rates oscillations.The average values of riser bottom pressure、 riser pressure drop and inlet liquid flow rates as well as the valve opening after severe slugging being stabilized by above-mentioned three control methods were compared to evaluate the control effects.The results show that the PID control strategy based on riser pressure drop presents the best performance with the largest valve opening and a relative high inlet flow rate,the PID control strategy based on riser base pressure takes the second place and the manual control shows the worst.