压力降 pressure drop ; Loss of pressure ; pressure fall ; pressure loss
钻头压力降 bit pressure drop
总压力降 [力] total pressure drop
压力降低 pressure decay ; reduction of pressure ; pressure decrease ; pressure unloading
压力降落 pressure breakdown ; PFO ; pressure drop
额外压力降 extra pressure drop
压力降半时间 PHT ; Pressure half time
零垂向压力降 zero vertical pressure drop
粘滞压力降 viscous pressure drop
井筒压力降 wellbore pressure drop
试验结果表明，新型滤器的压力降完全符合规定要求，原始滤清效率为63.04%，而传统滤器的原始滤清效率仅为60%。
The test results show that the pressure descend of new filter conform to the requirement of standard, the filtration efficiency is 63.04%, and the traditional filter is no less than 60%.
然而，压力降几乎完全发生在多孔塞中。
However, the pressure drop occurs almost completely in the plug.
该项研究成果，同时也克服了以往仅从压力降角度定性确定影响半径计算公式的缺点。
This researched achievement is also gets over the drawback of determining calculation formula for influenced radius only by pressure falling down.
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