In high Angle Wells, calculating holdup of multiple phase flow is always a difficult technique problem, the judgment of flow regime and flow pattern is the main effect on calculating the holdup.
大斜度井中多相流持率计算一直是困绕人们的技术难题，流态及流型判定是影响持率计算的主控因素。
The main influence parameters on vibration were briefly explained. The mechanism of induced vibration in two-phase cross-flow and the necessary formulae were emphatically expounded.
文中简要说明影响振动的主要参数，重点阐述了横向流时两相流体诱发振动的机理以及必要的计算公式。
The main works are listed as follows:1) Based on higher-order statistics technique, a new method for differential pressure fluctuation signal analysis of gas-liquid two-phase flow is proposed.
基于高阶统计量技术，提出了一种气液两相流差压波动信号分析的新方法。
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