推导了二流量试井的压力公式 ,绘制出理论图版 ,分析了早期纯井储和径向流阶段的压力动态特征 .结果表明 ,在纯井储效应期 ,二流量的压力和压力导数曲线均具有斜率为 1的特点 ,但不经过原点 .经过数学处理 ,二流量压力导数曲线上的无限作用径向流段为一条数值为 0 .5的水平线 ,与常流量试井的导数曲线特征相同 .二流量试井分析实例说明拟合效果良好 The pressure formula of the second-rate well test is deduced and the theoretical plate is plotted, and the pressure dynamic characteristics of the early pure well reservoir and radial flow stage are analyzed. The results show that both the pressure and the pressure derivative curve Has the characteristic of slope 1, but does not pass through the origin.After mathematical treatment, the infinitely acting radial flow section on the second-rate pressure derivative curve is a horizontal line with a value of 0.5, which is the same as that of the constant flow well test. Second-rate well test analysis shows that the fitting effect is good