近壁对总压测量影响不大。速度梯度和近壁对测量误差的影响还与来流方向有关。
The effects of the velocity gradient and wall-proximity on the measuring errors are related to the flow direction.
给出了极限井底流压和产量拐点的求解方法，分析了启动压力梯度、流体性质等因素对低渗透油藏油井产能的影响。
The effects of reservoir fluid property in high and low pressure and the starting pressure gradient on the percolation laws were taken into account in this model.
文章分析了与折冲流有关的因素，如压差、压力和流速梯度以及渥奇面参数，进而提出了修改方案，基本解决了该孔存在的折冲流问题。
The factors related to the oblique flow, such as pressure difference, pressure and velocity gradients and the parameter of Ogee surface are also analysed.
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