drawdowns
英
美
网络 水位降低
双语例句
- Based on analysis of the basic flowing pattern of borehole fluids during under-balanced drilling operation, a set of formula is presented for calculating pressure drawdowns in the annulus and drill strings.
在分析欠平衡钻井过程中井眼流体基本流型的基础上，给出了一套计算环形空间及钻杆内部压降的计算公式。