According to the semi-logarithmiccurve, pressure derivative curves of vugs initially increase and then decrease;
绘制出了溶洞压力导数半对数曲线和井底压力双对数曲线。
2
The relationship of the fluctuating pressure coefficient on wall and the turbulent intensity near the wall can be described with logarithmiccurve.
单股和双股射流塘底脉动压强系数与近壁紊流强度的关系可用对数曲线表述。
3
The double logarithmiccurve could be divided into four stages-wellbore storage effect reaction stage, fracture reaction stage, vug reaction stage, and boundary reaction stage.