美“Security”公司最近介绍了一种减震器。摘要如下: 这种减震器能吸收钻头的冲击及振动负荷,延长钻头牙齿及轴承的寿命,减少钻杆及地面设备的损坏。但“Security”减震器不受钻压、井温及井压影响的局限。这种减震器取消了井下的液力及气动动作,代之以完全机械的贝氏弹簧作用机构。这样的减震器在各种井下条件下,具有更广泛的使用范围。 US “Security” company recently introduced a shock absorber. Abstract is as follows: This shock absorber can absorb the impact of the drill and vibration load, extend the life of the drill teeth and bearings to reduce the drill pipe and ground equipment damage. However, the “Security” shock absorber is not limited by the weight-on-bit, well temperature and well pressure. This shock absorber canceled the underground hydraulic and pneumatic action, replaced by completely mechanical Belleville spring mechanism. Such a shock absorber in a variety of downhole conditions, with a wider range of use.