准确的井底流压是计算地层压力和气井动态分析的基础。井口压力计算法通常采用干气模型,必然造成井底流压以及地层压力计算的误差~[1]。本文首先根据气井出液情况,应用三种计算井底下压力的方法,分别是平均温度偏差系数法、修正的Cullender-Smith法、Hagedom-Brown模型法,提高了井底流压的计算精度~[2]。 Accurate bottom hole flow pressure is the basis for calculating formation pressure and gas well dynamic analysis. Wellhead pressure calculation method usually adopts dry gas model, which inevitably results in bottom hole flow pressure and formation pressure calculation error [1]. In this paper, three methods for calculating the pressure at the bottom of the well are applied based on the gas well liquid outflow. They are the average temperature deviation coefficient method, the modified Cullender-Smith method and the Hagedom-Brown model method, respectively. ].