自控泵吸法消除强烈段塞流

Auto-pumping method for severe slugging elimination

在海洋油气开采过程中，当海底混输管线到达海洋平台时，需与上升管连接，从而构成了集输一上升管系统。而在油田开采后期，由于气液相速度较低，该系统中易形成强烈段塞流。由于该流型在生产实际中会带来许多问题，例如系统中压力的剧烈波动以及长液塞的出现会造成分离器的控制困难，甚至出现生产中断，同时在深海油田中强烈段塞流现象会产生很高的背压，对油藏造成不利的影响，甚至出现死井。因此，深入系统地研究强烈段塞流的发生机理和流动特征，探索消除强烈段塞流的可行方法，是我国海洋油气工业油田开发过程中亟须解决的科学问题。

During the process of offshore oil gas exploitation,severe slugging appears in the pipeline-riser system,which causes large fluctuation of pressure and oil gas flow rates and lead to decreased production and pipeline corrosion.Meanwhile the structural strength and stability of the operating platform will be undermined.In order to eliminate the severe slugging appearing in the pipeline-riser system,the auto-pumping method was developed.This new method could completely eliminate the severe slugging which occurred at low oil gas flow rates,and significantly reduce the severe slugging region.The efficiency of this method mainly depended on the effect of self-suction.The better effect of self-suction would create higher elimination efficiency.Practically a submersible pump is recommended to be installed in the vertical pipeline in the oil field to eliminate severe slugging.