论文部分内容阅读
利用孔底液压冲击钻具破碎岩石是最近在钻探工作中推行的一种新方法。液压冲击器所形成的扭距和冲击脉冲对岩石破碎工具的共同作用促进了有效破碎井底岩石,从而大大提高机械钻进效率。
Breaking rocks using bottom-hole hydraulic impact drillings is a new method recently introduced in drilling. The combination of torque and shock pulses created by the hydraulic impactors on the rock crushing tool facilitates the effective crushing of the rock at the bottom so that the efficiency of mechanical drilling is greatly enhanced.