【摘要】 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更多还原

【Abstract】 The pressure expression of two\|rate flow test is studied. The type curves are made. The early pressure characteristics during pure wellbore storage and radial flow are analyzed. Early pure wellbore storage shows as a unit slope straight line on a log\|log plot, as a unit slope line on a derivative plot, but not through origin. Infinite acting radial flow shows as a flat region whose value is 0.5 on a derivative plot, the same as constant rate type curves. Two actural data examples are presented.更多还原