By using the surge pressure calculating method, in this paper the formulas have been derived which are used to calculate the maximum allowablevelocity in pulling and running pipe in borehole.
本文根据波动压力计算方法推导出了最大许用起钻速度和下钻速度的计算公式。
2
Then the preparation of magnetic immobilized beds was investigated theoretically and experimentally, such as the force balance, the control of packing length and the allowablevelocity of flow.