多杯等流分离器气液两相流动中气泡群流动研究

Bubble Swarm Flow in Gas-liquid Two-phase Flow in a Multicup Isoflux Separator

随着油田的不断开发,气液两相流中的气相对油井的影响越来越明显,气体也是造成抽油机泵效率较低的重要原因。只有降低进入泵的气体的量才能有效的提高泵效率。所以,井下分离器技术的研究是提高泵效的方法之一。实验研究采用理论分析和模型相结合的方法,设计、搭建了一套模拟皇冠型多杯等流气液分离器的实验装置。利用高速摄像机连续记录不同流量下沉降杯内气泡的运动情况,分析气泡及气泡群运动参数,以此为依据,提出气液分离器的结构的改进方案,提高分离器的分离效率。

With the continuous development of oilfield, the research of two-phase flow is an important research topic at domestic and overseas in the oil industry. The influence of gas to the well becomes more and more obvious; the influence of the gas phase is also the important reason to cause the low oil-well pump efficiency. Only reducing amount of gas entering the pump can effectively improve the efficiency of the pump. So, down-hole separator technology research is one of the ways to improve the pump efficiency. In this paper, by the method of combining theoretical analysis and model test, a set of experimental simulation device of downhole gas-liquid separator was designed and developed. High speed camera was used to continuously record bubble movement situation inside the cup under different flow, bubble motion parameters were analyzed. On this basis, improvement scheme of multiple structure of the gas-liquid separator was put forward to increase separation efficiency of the separator.