Abstract： Some related parameters of nozzel installation positi on and the influencing regulation of the slotting numbers of untwisted tube on the yarn strength were researched.

摘 要： 研究了气纺安装位置有关参数及解捻管槽数对成强力的影响规。

Fluid is conveied to bit nozzel through drill string from pump is a transient state flowing with pressure wave, which makes the fluid jetted out from nozzel has certain pulsation.

从钻井泵经过钻柱内部输送到钻头的体是一种动，存在着压力行波，使从普通射出的体有一定程度的脉动。