For a new well, it is an important work to determine initial reservoir pressure, effective permeability, summary skin coefficient, supplementary pressure loss and flow efficiency.

对于一口新井，确定原始地层压力、有效渗透率、总表皮系数、附加压力损失和流动效率，是试井的重要任务。

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Its shortcoming is mainly the resistance to flow coefficient is quite big, therefore creates the pressure loss, in the hydraulic unit, this pressure loss especially is specially obvious.

其缺点主要是流阻系数比较大，因此造成压力损失，特别是在液压装置中，这种压力损失尤为明显。

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Functions of flow sensitivity coefficient, enthalpy sensitivity coefficient are deducted as per pressure loss calculation formula of two-phase flow.

根据汽液两相流动阻力的计算式，推导出了流量敏感系数、出口焓值敏感系数的表达式。

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