降落曲线

斜井多井系统中一口井压力降落曲线试井分析

Well Test Analysis by Using A Well Drawdown Curve in Multiple Deviated Well System

正常高潮位正常高水位（地下水位的）降落曲线

Normal high water level depression curve

用初等方法证明等时摆的摆锤所描成的曲线和最速降落曲线都是旋轮线；

Prove with elementary method that the curve described by an isochronous pendulum and the fastest falling curve are cycloids .

气藏现埸试验证实了该理论的正确性，并根据压力降落曲线中的视稳定状态资料，便能正确计算气井的控制储量。

This theory has been proved by gas well test in field . According to the apparent steady state date in pressure drawdown curve , the control reserves of a gas well can be calculated correctly .

文中推导出了在均质各向同性无上、下补给、定降深抽水条件下，考虑滞流作用时的变边界井流问题水位降落曲线及井的出水量的解析公式。

By taking the stagnation action of flow into consideration , the analytical solutions for computing drawdown and pumping rate is derived under the conditions of homogeneous , isotropical unconfined aquifer without recharge and of fixed drawdown in the pumping well .