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。

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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。

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