休斯工具公司所研制的钻杆减震器,用压缩的氮气(如同一个特别“柔软”的弹簧)承受钻头的负荷,明显地缓和了钻杆的震动。这种特性,使得有可能选用能够获得最佳钻进效果的转速和钻压。在1200米左右的井中,这种气垫的弹性强度只有3572公斤/厘米,这就是说,钻压增加3572公斤,就使气垫压缩一厘米。在较深的井中, The drill pipe damper developed by Hughes Tools Corporation, which uses compressed nitrogen (like a special “soft” spring) to withstand the load on the drill, significantly mitigates the vibrations of the drill pipe. This feature makes it possible to choose the speed and weight-on-bit that will give you the best drilling results. In wells of about 1200 meters, the elastic strength of this air cushion is only 3,572 kg / cm, which means that the increase of the weight-on-bit pressure of 3,572 kg will compress the air cushion by one centimeter. In deeper wells,