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为了防止钻孔过度弯曲,不少单位在易斜地区的施工中采取了一些综合性防斜措施。例如,改变钻孔设计角度、搞好设备安装、增强钻具回转时的稳定性和导向性、根据地质条件严格控制工艺参数和改变钻进方法等等。在这些措施当中尤以改变钻进方法效果显著。像采用液动冲击回转钻进法,在防斜工作中就取得了可喜的成绩。
In order to prevent over-bending drilling, many units in the inclined area of the construction of a number of comprehensive anti-ramp measures taken. For example, to change the design perspective of drilling, improve equipment installation, enhance the stability and orientation of the drilling tool, strictly control the process parameters and change the drilling method according to the geological conditions. In particular, among these measures, the effect of changing the drilling method is remarkable. Like the use of hydraulic impact rotary drilling method, the anti-ramp work has made gratifying achievements.