瑞德·海卡洛格公司(现隶属于GrantPrideco公司)研制成功一种新型固定切削齿钻头,该钻头安装了极为锋利、耐磨、可获得高机械钻速的TReXTM人造金刚石齿,采用了能够减少在硬岩中发生冲击损坏且稳定性很好的SteeringWheel(方向盘式)结构,可以提高钻井速度减少非生产性起下钻时间。该钻头的方向盘式结构最初是为了给钻井马达提供平稳的扭矩响应,钻头的360°全接触保径环能防止外部的齿由于在规径部位吃入井壁太多而导致的钻头回旋减小并能延长切削齿的工作寿命,这种限制横向运动的能力可在直井钻井(特别是在有夹层的硬地层)中大幅度提高钻头的稳定性,从而避免钻头发生回旋和粘-滑损坏。 A new fixed-cutter bit developed by Reid Häkarog (now part of GrantPrideco) installed a very sharp, wear-resistant, TReXTM synthetic diamond tooth with a high ROP, Reducing shock-damaged and well-steered SteeringWheel structures in hard rock improves drilling speed and reduces unproductive drill-off times. The drill’s steering wheel structure was originally designed to provide a smooth torque response to the drilling motor. The 360 ​​° full contact ring of the drill bit prevents the bit from rotating outward due to too much shaft wall at the caliper This extends the working life of the cutting teeth. This ability to limit lateral movement greatly improves drill bit stability in vertical well drilling, especially in hardcore formations with interlayers, preventing bit swirling and stick-slip damage.